Flashcards - Chapter 27 The Reproductive System (TB) ~ The Guardian

The ductus deferens, the excretory duct of the testis, is the continuation of the canal of the epididymis. Commencing at the lower part of the tail of the epididymis it is at first very tortuous, but gradually becoming less twisted it ascends along the posterior border of the testis and medial side of...Course Hero has all the homework and study help you need to succeed! We've got course-specific notes, study guides, and practice tests along with expert tutors.The vas deferens (Latin: "carrying-away vessel"; plural: vasa deferentia), also called ductus deferens (Latin: "carrying-away duct"; plural: ductus deferentes), is part of the male reproductive system of many vertebrates...The Ability Of Sperm Cells To Move Along The Ductus Deferens Is Due To _.The ductus deferens, or vas deferens, is a fibromuscular tube that is continuation of the epididymis and is an excretory duct of the testis. Each ductus is 30-45 cm in length and serves to transport sperms cells from the respective epididymis to the ipsilateral ejaculatory duct.

[Solved] The ability of sperm cells to move along the ductus...

Ductus deferens, thick-walled tube in the male reproductive system that transports sperm cells from the epididymis, where the sperm are stored prior to ejaculation. Each ductus deferens ends in an enlarged portion, an ampulla, which acts as a reservoir. There are two ductus deferentes, identical in.2) The ability of sperm cells to move along the ductus deferens is due to _. 17) In humans, separation of the cells at the twocell state following fertilization may lead to the production of twins, which in this case would be _.Question 27 The ability of sperm cells to move along the ductus deferens is due to ? gravity O peristaltic contractions O enzymatic activity O hormonal action Question 28 The adenohypophyseal hormone that triggers ovulation is estrogen. True 0 False D Question 29 Stress or age can cause the...The spermatic cord along with the spermatic artery, nerves to the testis, and the pampiniform plexus of veins sheathe the ductus deferens (Figure 11). The histologic transition between the epididymis and the vas is abrupt; this is largely due to the development of a thick smooth muscle coat around the...

Vas deferens - Wikipedia

These organs function together to produce sperm and deliver semen from the testes via ejaculation. Propulsion of spermatozoa into the ductus deferens. Description: The penis becomes rigid as its corpora cavernosa fill with blood due to sensory and/or mental stimulation of primarily...Draft Page - notice removed when completed. The male internal genital tract leaving each of the male testis is the ductus deferens (vas deferens; Latin "carrying-away vessel"; plural: vasa deferentia). The excretory duct of the testis that is the continuation of the canal of the epididymis.The ability of sperm cells to move along the ductus deferens is due to _. A. Hormonal action. How do the testes respond to exposure to excessive body warmth? A. They move away from the pelvic cavity.The ductus deferens is the continuation of the tail of the epididymis. It ascends along the medial side of epididymis posterior to the testis and runs in the posterior part of the spermatic cord through the scrotum, inguinal canal and into the abdominal cavity through the deep inguinal ring, where it is...The sperm then move to the vas deferens (VAS DEF-uh-runz), or sperm duct. The seminal vesicles and prostate gland make a whitish fluid called seminal fluid, which mixes Smooth muscle tissue in the walls of the ductus deferens contracts in waves of peristalsis to slowly move sperm along its length.

Take Quiz The dartos and cremaster muscular tissues are necessary to the integrity of the male reproductive gadget. Which of the following is true about the function they play?

A) They are liable for penile erection. B) They contract to push sperm along the ductus deferens. C) They control the temperature of the testes. D) They contract to allow ejaculation.

C) They control the temperature of the testes.

The ability of sperm cells to move along the ductus deferens is due to ________.

A) hormonal actionB) enzymatic activity C) gravity D) peristaltic contractions

D) peristaltic contractions

The ability of a male to ejaculate is due to the motion of ________.

A) the dartos muscle B) parasympathetic nerves C) the bulbospongiosus musclesD) luteinizing hormone

C) the bulbospongiosus muscle mass

The most vital possibility for testicular cancer in young men is ________.

A) smoking B) nondescent of the testes C) sexually transmitted infectionsD) a vitamin prime in fats

B) nondescent of the testes

Which of the following glands are answerable for 60% of the synthesis of semen?

A) the pituitaryB) the bulbourethral glands C) the seminal vesicles D) the prostate

C) the seminal vesicles

Which of the following hormones controls the unlock of anterior pituitary gonadotropins?

A) testosteroneB) FSH C) GnRH D) LH

C) GnRH

Development of male reproductive buildings is dependent upon which of the following occasions?

A) secretion of male hormones prenatally and lasting into the first few months after delivery B) that human gonadotropin be synthesized in the first week of the pregnancyC) the suppression of inhibin D) that the feminine hormones are suppressed during pregnancy

A) secretion of male hormones prenatally and lasting into the first few months after delivery

The number one serve as of the uterus is to ________.

A) give protection to the ovaries B) keep watch over the ovarian and menstrual cycles C) synthesize female hormones D) obtain, retain, and nourish a fertilized ovum

D) receive, retain, and nourish a fertilized ovum

Why is the blood-testis barrier important?

A) Actually, the blood-testis barrier has no serve as.B) because immature sperm cells lose their motility once they come across any blood part C) as a result of some blood contents are toxic to the spermatozoa D) because spermatozoa and developing cells produce floor antigens which can be recognized as overseas by means of the immune gadget

D) as a result of spermatozoa and creating cells produce surface antigens that are recognized as overseas via the immune gadget

The structures that receive the ovulated oocyte, offering a website online for fertilization, are called the ________.

A) Graafian follicles B) infundibula C) fimbriaeD) fallopian tubes

D) fallopian tubes

If gametes had been diploid like somatic cells, how many chromosomes would the zygote include?

A) twice the diploid number, and with every succeeding era, the chromosome number would continue to double and commonplace building may just now not occur B) There is no relationship between gametes and somatic cells.C) part the diploid number without a alternate in development D) triple the diploid number, and with each succeeding generation, the chromosome quantity would continue to triple and standard development would not occur

A) twice the diploid number, and with every succeeding technology, the chromosome quantity would proceed to double and customary building may now not happen

Human egg and sperm are identical in that ________.

A) they have the same stage of motility B) they are about the similar sizeC) they've the identical number of chromosomes D) about the similar number of each is produced per month

C) they have the same quantity of chromosomes

The fidelity of the chromosome number from one cellular technology to the next is maintained via ________.

A) mitosis B) meiosis C) cytokinesis D) DNA synthesis

B) meiosis

Fertilization in most cases happens in the ________.

A) vagina B) ovaryC) uterus D) fallopian tubes

D) fallopian tubes

Spermiogenesis involves the ________.

A) formation of 4 haploid cells from a spermatogonium B) motion of sperm in the feminine genital tract C) sequence of occasions in the rete testisD) formation of a useful sperm by means of the stripping away of superfluous cytoplasm

D) formation of a practical sperm by way of the stripping away of superfluous cytoplasm

All of the following will also be regarded as male secondary intercourse traits with the exception of the ________.

A) decreasing of the voice B) development of testes as opposed to ovaries C) construction of frame hair D) expanding mass of the skeleton

B) development of testes as antagonistic to ovaries

In people, separation of the cells at the two-cell state following fertilization might lead to the manufacturing of twins, which on this case can be ________.

A) similar B) fraternal C) dizygoticD) of other sexes

A) similar

Characteristics of the mature sperm come with the ________.

A) absence of an acrosome B) absence of coiled mitochondriaC) presence of Y chromosomes in roughly part the sperm D) presence of two X chromosomes in roughly part the sperm

C) presence of Y chromosomes in approximately half the sperm

How do the testes reply to publicity to excessive body warmth?

A) Excessive warmth has no impact on the testicles because of their location in the scrotum. B) Excessive heat is in fact really useful in that it accelerates the maturation of sperm.C) They move clear of the pelvic hollow space. D) They move close to the pelvic cavity.

C) They move away from the pelvic cavity.

Effects of estrogen come with ________.

A) growth of the larynxB) deepening of the voice C) growth of the breasts at puberty D) higher oiliness of the skin

C) expansion of the breasts at puberty

Secretion of progesterone stimulates ________.

A) contraction of uterine muscle tissue B) secretory activity of the uterine myometrium C) construction of the female secondary intercourse characteristicsD) preparation of the mammary glands for lactation

D) preparation of the mammary glands for lactation

Which of the following statements about sperm is now not true?

A) They are sluggish in an alkaline atmosphere. B) The sperm midpiece consists of mitochondria spiraled tightly round the contractile filaments of the tail.C) The acrosome is produced by way of the Golgi apparatus and accommodates hydrolytic enzymes.D) They contain very little cytoplasm or stored vitamins.

B) The sperm midpiece is composed of mitochondria spiraled tightly round the contractile filaments of the tail.

The cells that produce testosterone in the testis are known as ________.

A) sustentacular cells B) spermatocytes C) spermatogonia D) interstitial cells

D) interstitial cells

The testicular cells that assemble the blood-testis barrier are the ________.

A) spermatogonia B) interstitial cellsC) spermatocytes D) sustentacular cells

D) sustentacular cells

Which of the following happens as a result of undescended testes?

A) Sperm will have no manner of exit from the frame. B) Male intercourse hormones may not be circulated in the frame. C) Inadequate blood supply will retard the building of the testes.D) Inadequate or nonviable sperm will likely be produced.

D) Inadequate or nonviable sperm can be produced.

Erection of the penis effects from ________.

A) a parasympathetic reflexB) a sympathetic reflex C) dilation of the veins in the penis D) parasympathetic activation of the bulbourethral glands

A) a parasympathetic reflex

Which is not an element of the proliferative phase of the feminine menstrual cycle?

A) overdue on this section, cervical mucus turns into skinny and crystalline B) vesicular follicle enlargement C) corpus luteum D) building of endometrial cells

C) corpus luteum

Which of the choices underneath is now not a serve as of the vagina?

A) is the delivery canal B) serves as a passageway for the primary oocyte C) receives semen from the penis during sexual intercourseD) serves as a passageway for menstrual go with the flow

B) serves as a passageway for the number one oocyte

Select the right kind remark about male sexual response.

A) Sympathetic impulses are liable for causing penile arteriolar dilation, leading to erection. B) Expansion of the penile tissues ends up in dilation of the venous outflow. C) Ejaculation is the outcome of parasympathetic stimulation.D) Erection is the end result of vascular areas in the erectile tissues filling with blood.

D) Erection is the consequence of vascular areas in the erectile tissues filling with blood.

Which of the alternatives underneath is no longer a function of testosterone?

A) stimulates the male development of development B) contributes to male sexual habits and spermatogenesis C) stimulates protein synthesis D) stimulates mammary gland development

D) stimulates mammary gland development

Which male hormone inhibits the secretion of FSH?

A) ICSH B) testosteroneC) inhibin D) ACTH

C) inhibin

During the secretory segment of the menstrual cycle ________.

A) LH reaches its absolute best ranges B) estrogen reaches its absolute best ranges C) progesterone levels are at their perfect D) the Graafian follicle forms

C) progesterone ranges are at their highest

Select the right kind remark about the uterine cycle.

A) During the secretory segment, estrogen ranges are at their best. B) If fertilization occurs, the corpus luteum is maintained through a hormone secreted by the growing embryo.C) During the proliferative segment, ranges of progesterone rise as the follicle begins to produce more hormone. D) The menstrual segment of the cycle is from day 1 to day 8.

B) If fertilization happens, the corpus luteum is maintained through a hormone secreted through the growing embryo.

Which of the alternatives underneath is no longer a part of the brain-testicular axis?

A) anterior pituitary gland B) testesC) hypothalamus D) thalamus

D) thalamus

Which of the following statements is true relating to the mammary glands of both males and females?

A) The mammary glands are changed sweat glands that are actually section of the integumentary machine.B) Both sexes are similarly inclined to breast most cancers. C) All lumps identified in breast tissue are malignant. D) The most effective time hormones target breast tissue is throughout being pregnant and lactation.

A) The mammary glands are modified sweat glands that are in truth part of the integumentary device.

Normally menstruation happens when ________.

A) the corpus luteum secretes estrogenB) blood levels of estrogen and progesterone decrease C) blood levels of estrogen and progesterone building up D) blood levels of FSH fall off

B) blood ranges of estrogen and progesterone decrease

The basic distinction between spermatogenesis and oogenesis is that ________.

A) throughout spermatogenesis two extra polar our bodies are produced B) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are comprised of the mother or father mobile C) the mature ovum is n, while the sperm is 2n D) spermatogenesis involves mitosis and meiosis, but oogenesis comes to meiosis best

B) in oogenesis, one mature ovum is produced, and in spermatogenesis 4 mature sperm are made out of the guardian cellular

Occasionally 3 polar bodies are discovered clinging to the mature ovum. One got here from an unequal department of the ovum, however from where did the different two arise?

A) There have been firstly four polar our bodies and one disappeared. B) The first polar frame has additionally divided to produce two polar bodies. C) One is an undeveloped number one oocyte that failed to mature. D) What you really see are two polar bodies and the sperm that may fertilize the egg.

B) The first polar body has also divided to produce two polar bodies.

Which of the following will happen after ovulation?

A) The corpus luteum prepares to turn into a corpus albicans.B) The endometrium enters its secretory phase. C) The secretion of anterior pituitary gonadotropins is enhanced. D) The corpus luteum secretes estrogen simplest.

B) The endometrium enters its secretory section.

Why doesn't semen input the urinary bladder throughout ejaculation?

A) Ejaculation is a parasympathetic reflex resulting in no reaction by urinary contraction muscles.B) There is no commonplace duct between the reproductive gadget and the urinary gadget. C) The clean muscle sphincter at the base of the urinary bladder closes. D) There is no urge to urinate all the way through sexual sex because of the suppression of LH through testosterone buildup in the blood.

C) The easy muscle sphincter at the base of the urinary bladder closes.

Spermatogenesis ________.

A) makes use of mitosis to produce gamete cellsB) is the procedure of releasing mature sperm cells into the lumen of the seminiferous tubule C) involves a type of cell division limited to the gametes D) ends up in the formation of diploid cells

C) comes to a type of cellular department limited to the gametes

Which hormone is completely vital for ovulation to happen?

A) progesterone B) LH C) estrogenD) FSH

B) LH

The brain-testicular axis ________.

A) comes to a positive comments loop control of spermatogenesisB) involves FSH and LH unlock C) is the tight dating between the cortex and the keep an eye on of testicular serve as D) involves posterior pituitary release of regulating hormones

B) involves FSH and LH unlock

Select the correct commentary about testosterone control.

A) FSH stimulates testicular manufacturing of testosterone. B) GnRH from the hypothalamus causes FSH and LH free up from the anterior pituitary. C) The pineal gland is believed to be the gland that exerts the most influence in testosterone keep an eye on.D) Inhibin and testosterone exert sure feedback on the hypothalamus and pituitary.

B) GnRH from the hypothalamus causes FSH and LH unlock from the anterior pituitary.

Which of the following is a proper remark about uterine tubes?

A) The infundibulum is the funnel-shaped area close to the ovary. B) The mesometrium helps the uterine tubes along their complete length.C) The isthmus is the standard site of fertilization. D) The ampulla is the slender constricted region.

A) The infundibulum is the funnel-shaped area close to the ovary.

Select the correct remark about the hormonal events of the ovarian cycle.

A) The LH surge stimulates further construction of the secondary oocyte.B) The follicle begins to secrete progesterone in response to estrogen stimulation. C) Rising levels of estrogen get started follicle building. D) High estrogen levels result in a surge of LH liberate.

D) High estrogen levels result in a surge of LH free up.

Which of these statements about sexually transmitted infections is false?

A) Chlamydia is brought about by micro organism that can often be asymptomatic or deliver on a wide variety of signs. B) Gonorrhea is caused through a bacterium that can carry on painful discharges in males. C) Genital herpes is brought about by a virus that may purpose intermittent lesions.D) Syphilis is caused by means of a pandemic that can lead to dying if untreated.

D) Syphilis is caused by way of a pandemic that can lead to demise if untreated.

Which of the following statements about spermatogenesis is now not true?

A) Each spermatid bureaucracy two sperm.B) The secondary spermatocytes each and every form two spermatids. C) The number one spermatocyte forms two secondary spermatocytes. D) The spermatogonium forms the primary spermatocyte.

A) Each spermatid forms two sperm.

A boy who has no longer handed through puberty sustains an injury to his anterior pituitary such that FSH is not released, but LH is normal. After he grows to adulthood, one would be expecting that he would ________.

A) have impaired function of interstitial cellsB) be impotent (unable to have an erection)C) not expand secondary intercourse traits D) be sterile

D) be sterile

Which of the following statements about the female reproductive procedure is no longer true?

A) Rebuilding the endometrium is underneath the control of prolactin. B) The per 30 days discharge of the uterus (menses) is initiated via the decrease in secretion of female hormones.C) Fertilization typically occurs in the fallopian tube. D) Ovulation normally happens 14 days after the beginning of menses.

A) Rebuilding the endometrium is under the keep an eye on of prolactin.

A low secretion of luteinizing hormone (LH) in the standard male grownup would purpose ________.

A) shrinkage of the anterior pituitary glandB) decreased testosterone secretion C) increased spermatogenesis D) excessive beard growth

B) diminished testosterone secretion

All of the following statements referring to the uterine cycle are true with the exception of ________.

A) the corpus luteum is shaped from the ruptured follicle after ovulation B) FSH and LH immediately promote construction of the uterine endometrium C) a lower in the ranges of ovarian hormones indicators menstruationD) estrogen is secreted through the growing follicle in the follicular section of the cycle

B) FSH and LH immediately promote building of the uterine endometrium

Which of the following phases or processes in the per 30 days reproductive cycle of the female happen concurrently?

A) maximal steroid secretion by way of the corpus luteum and menstruation B) early follicular development and the secretory phase in the uterus C) regression of the corpus luteum and a lower in ovarian progesterone secretionD) maximal LH secretion and menstruation

C) regression of the corpus luteum and a decrease in ovarian progesterone secretion

The duct gadget of the male reproductive machine does now not include the ________.

A) ductus deferens B) corpus spongiosumC) epididymis D) urethra

B) corpus spongiosum

An ovulating oocyte is in reality activated via hormones about ________ days ahead of ovulation.

A) 110B) 14 C) 28 D) 85

D) 85

Prostate cancer is _______.

A) continuously the end result of a distortion of the urethraB) most commonplace in Asians C) infrequently a slow-growing most cancers that may by no means constitute a danger to the patient D) the number-one reason of dying in males

C) infrequently a slow-growing cancer that can by no means constitute a risk to the patient

The ________ plexus of testicular veins assists in cooling the testis.

pampiniform

Surgical chopping of the ductus deferens as a kind of delivery keep watch over is known as a(n) ________.

vasectomy

The erectile tissue round the urethra is the corpus ________.

spongiosum

The midpiece of the sperm tail accommodates mostly ________.

mitochondria

The ________ cells of the testis nourish the newly formed sperm cells.

sustentacular

The suspensory ligament and mesovarium are part of the ________ ligament.

wide

A follicle with just a small antrum in it will be classified as a(n) ________ follicle.

secondary

The small opening of the uterus that sperm would first input is referred to as the ________.

external os

The portion of the uterine endometrium that is not sloughed off every month is referred to as the ________.

stratum basalis

________ is caused by Treponema pallidum.

Syphilis

It is necessary for the testes to be stored beneath body temperature. True or FalseTrue False

True

The prostate atrophies as a man ages, and it usually reasons no health problems. True or FalseTrue False

False

The hormone oxytocin combines with enzymes in semen to make stronger sperm motility. True or FalseTrue False

False

When a couple is having issue conceiving a kid, it is important to examine the sperm of the male. True or FalseTrue False

True

The amount of testosterone and sperm produced through the testes is depending on the affect of FSH alone. True or FalseTrue False

False

Ovarian follicles comprise mature eggs. True or FalseTrue False

False

Sexually transmitted illnesses are the most important purpose of reproductive issues. True or FalseTrue False

True

Reproduction is now not imaginable in males or ladies till 365 days after puberty has begun. True or FalseTrue False

False

Males do not undergo menopause as females do, but there is a gentle aid of their testosterone ranges. True or FalseTrue False

True

Pain right through ovulation is called dysmenorrhea. True or FalseTrue False

False

A human egg or sperm comprises 23 pairs of chromosomes. True or FalseTrue False

True

The Pap smear is a test to discover cancerous adjustments in cells of the cervix. True or FalseTrue False

True

The adenohypophyseal hormone that triggers ovulation is estrogen. True or FalseTrue False

False

The female hormone corresponding to the male ICSH is FSH. True or FalseTrue False

False

The male urethra serves the urinary gadget best. True or FalseTrue False

False

Both tetrads and crossovers are observed all through meiosis. True or FalseTrue False

True

Failure to attain erection is referred to as impotence. True or FalseTrue False

True

Ovulation occurs close to the finish of the ovarian cycle. True or FalseTrue False

False

The corpus luteum secretes progesterone best. True or FalseTrue False

False

Female orgasm is required for conception. True or FalseTrue False

False

The first sign of puberty in women folk is budding breasts. True or FalseTrue False

True

The number one function of the testes is to produce testosterone. True or FalseTrue False

False

The degree in meiosis the place chromosomal alternate takes place is telophase. True or FalseTrue False

False

The diamond-shaped area between the anus and clitoris in the female is the vulva. True or FalseTrue False

False

The soft mucosal lining of the uterus is the endometrium. True or FalseTrue False

True

A scrotal muscle that contracts in response to cold environmental temperature is the cremaster. True or FalseTrue False

True

The secretions of the bulbourethral glands neutralize lines of acidic urine in the urethra and function a lubricant all the way through sexual intercourse. True or FalseTrue False

True

The zona pellucida is shaped as the follicle turns into a secondary follicle. True or FalseTrue False

True

The molecule that enhances the ability of testosterone to advertise spermatogenesis is inhibin. True or FalseTrue False

False