Deck 45: Male Reproductive System

Question 1

Mechanical support and protection for developing germ cells in the testis are provided by:

A) tunica albuginea.
B) Sertoli cells.
C) interstitial cells.
D) rete testes.

Answer 1

B

Question 2

In the male, LH:

A) stimulates the seminiferous tubules to produce sperm more rapidly.
B) inhibits the secretion of FSH from the anterior pituitary.
C) stimulates the interstitial cells to increase their secretion of testosterone.
D) is referred to as "the anabolic hormone" because of its marked stimulating effect on protein anabolism.

Answer 2

C

Question 3

Which of the following is not a supporting structure of the male reproductive system?

A) Penis
B) Scrotum
C) Prostate
D) Pair of spermatic cords

Answer 3

C

Question 4

Which of the following is not a secreting gland in the male reproductive system?

A) Seminal vesicle
B) Bulbourethral gland
C) Prostate gland
D) All of the above are secreting glands in the male reproductive system

Question 5

Which of the following statements is not true?

A) Each testis is 4 to 5 cm long.
B) Each testis weighs about 10 to 15 grams.
C) The right testis is usually lower than the left testis.
D) All of the above are true.

Question 6

Testosterone:

A) inhibits the anterior pituitary secretion of FSH and LH.
B) helps regulate metabolism and stimulates protein anabolism.
C) promotes kidney tubule secretion of potassium.
D) does all of the above.

Question 7

Which of the following is not an effect of testosterone?

A) Promotes excretion of potassium by kidneys
B) Promotes anabolism of proteins
C) Promotes growth of skeletal muscles
D) Promotes lengthening of long bones

Question 8

Which of the following is not a function of testosterone?

A) Initiation of spermatogenesis
B) Development of secondary male sex characteristics
C) Regulation of metabolism
D) Inhibition of secretion of gonadotropins

Question 9

In the male reproductive system, the essential organs of reproduction are called:

A) seminal vesicles.
B) testes.
C) vasa deferentia.
D) Cowper glands.

Question 10

The tightly coiled tube of the epididymis measures _____ feet in length.

A) 5
B) 10
C) 15
D) 20

Question 11

Normally, capacitation occurs in sperm:

A) in the testes.
B) in the vas deferens.
C) in the urethra.
D) after they have been introduced into the vagina of the female.

Question 12

The dense, white, fibrous capsule that encases each testis is called the:

A) rete testis.
B) efferent ductule.
C) tunica albuginea.
D) scrotum.

Question 13

Each of the following is a duct in the male reproductive system except:

A) vas deferens.
B) urethra.
C) epididymis.
D) inguinal canal.

Question 14

The accessory organs of the male reproductive system include all the following except:

A) epididymis.
B) vasa deferentia.
C) urethra.
D) gonads.

Question 15

The efferent ductules:

A) surround and protect each testis.
B) are part of the tunica albuginea.
C) drain the rete testis.
D) do all of the above.

Question 16

Progesterone released by cells surrounding the ovum:

A) assist in capacitation of the sperm.
B) supply additional nutrient for the sperm.
C) increase motility and attract sperm to the ovum.
D) has no measurable effect on the sperm.

Question 17

To be capable of fertilizing an ovum, sperm must undergo a process called:

A) epiphyseal closure.
B) ejaculation.
C) capacitation.
D) gonadotropin secretion.

Question 18

Which of the following is (are) not classified as an accessory organ(s) of the reproductive system in the male?

A) Testes
B) Epididymides
C) Urethra
D) Seminal vesicles

Question 19

Which of the following divides the testes into lobules?

A) Seminiferous tubules
B) Vas afferens
C) Efferent ductules
D) Tunica albuginea

Question 20

The supporting structures in the male reproductive system include:

A) the penis.
B) a pair of spermatic cords.
C) the scrotum.
D) all of the above.

Question 21

In spermatozoa, a helical arrangement of mitochondria is located in the:

A) acrosome.
B) head.
C) cylindrical middle piece.
D) tail.

Question 22

The structure that connects the epididymis with the ejaculatory duct is the:

A) urethra.
B) vas deferens.
C) seminal vesicle.
D) scrotum.

Question 23

The urethra runs through the center of the:

A) seminal vesicle.
B) Cowper gland.
C) bulbourethral gland.
D) prostate gland.

Question 24

The male gland that secretes a fructose sugar used as an energy source for sperm is the:

A) prostate gland.
B) bulbourethral gland.
C) seminal vesicle.
D) Cowper gland.

Question 25

The duct of the vas deferens is an extension of the:

A) tail of the epididymis.
B) urethra.
C) ejaculatory duct.
D) seminal vesicles.

Question 26

Sertoli cells is another name for:

A) interstitial cells.
B) sustentacular cells.
C) rete testis.
D) tunica albuginea.

Question 27

Which of the following is not enclosed in the spermatic cord?

A) Vas deferens
B) Ejaculatory ducts
C) Blood vessels
D) Nerves

Question 28

The temperature required for sperm production is about _____ normal body temperature.

A) 10 degrees below
B) 3 degrees below
C) 10 degrees above
D) 3 degrees above

Question 29

As part of the maturation process, sperm will stay in the epididymis for:

A) 1 to 3 days.
B) 4 to 7 days.
C) 1 to 3 weeks.
D) 1 to 2 months.

Question 30

In the male, the urethra is:

A) involved in the reproductive system.
B) involved in the urinary system.
C) classified as a genital duct.
D) all of the above.

Question 31

Contraction of both the dartos and cremaster muscles, which pull the testes upward against the perineum, is caused by:

A) sexual arousal.
B) cold temperatures.
C) urination.
D) both A and B.

Question 32

The number of spermatids formed by one primary spermatocyte is:

A) 2.
B) 4.
C) 6.
D) 8.

Question 33

The opening of the urethra at the tip of the glans is called the:

A) prepuce.
B) external urinary meatus.
C) corpora cavernosa.
D) glans penis.

Question 34

Which of the following is true of the essential organ in the reproductive system?

A) It produces gametes.
B) It is called the testis in the male.
C) It is called the gonad in both sexes.
D) All of the above are true.

Question 35

The gland that secretes an alkaline substance that constitutes about 30% of the seminal fluid is the:

A) seminal vesicle.
B) Cowper gland.
C) bulbourethral gland.
D) prostate gland.

Question 36

The foreskin in the male is also known as the:

A) glans penis.
B) urinary meatus.
C) scrotum.
D) prepuce.

Question 37

The main factor determining male fertility is the:

A) size of the sperm.
B) number of sperm ejaculated.
C) shape of the sperm.
D) motility of the sperm.

Question 38

Which of the following is a part of the supporting structures of the male reproductive system?

A) Scrotum
B) Spermatic cord
C) Prostate
D) Seminal vesicle

Question 39

Leydig cells is another name for:

A) sustentacular cells.
B) rete testis.
C) interstitial cells.
D) none of the above.

Question 40

Which of the following glands is not a paired accessory gland of the male reproductive system?

A) Prostate
B) Seminal vesicle
C) Bulbourethral gland
D) Cowper gland

Question 41

When a male baby was born, the pediatrician discovered that the baby's left testicle had not descended into the scrotum. If the situation is not corrected soon, might the baby be sterile?

A) No, because the higher temperature inside the body cavity promotes spermatogenesis and will not impair fertility.
B) No, because the lower temperature inside the body cavity promotes spermatogenesis and will not impair fertility.
C) Yes, because the higher temperature inside the body cavity inhibits spermatogenesis, which could result in permanent sterility if untreated.
D) Yes, because the higher temperature inside the body cavity inhibits the secretion of testosterone by interstitial or Leydig cells in the testes, which could result in permanent sterility if untreated.

Question 42

What reproductive duct is divided into the head, body, and tail?

A) Vas deferens
B) Ejaculatory duct
C) Epididymis
D) Seminal vesicle

Question 43

What reproductive duct is a short tube about 1 cm long that passes through the prostate gland to terminate in the urethra?

A) Vas deferens
B) Ejaculatory duct
C) Epididymis
D) Seminal vesicle

Question 44

Which of the following is not a function of the Sertoli cells?

A) They produce testosterone.
B) They produce androgen-binding protein.
C) They form the blood-testis barrier.
D) All of the above are functions of the Sertoli cells.

Question 45

Which of the following ducts are not paired?

A) Urethra
B) Ejaculatory duct
C) Vas deferens
D) Both A and B

Question 46

Which of the following is not true of interstitial cells?

A) They produce testosterone.
B) They contain Reinke crystalloids that appear after puberty.
C) They form the blood-testis barrier.
D) All of the above are true of the interstitial cells.

Question 47

Which of the following cells contain 46 chromosomes?

A) Sperm cells
B) Primary spermatocytes
C) Secondary spermatocytes
D) Spermatids

Question 48

When the tight junctions of the sustentacular cells divide the seminiferous tubules into two compartments:

A) meiotically active cells are near the basement membrane.
B) meiotically active cells are near the lumen.
C) spermatogonia are near the lumen.
D) both A and C are true.

Question 49

Which structure is not found in the scrotum?

A) Testes
B) Seminal vesicles
C) Lower part of the spermatic cord
D) Epididymis

Question 50

Which statement is the best explanation of "immune infertility"?

A) The sperm contains hyaluronidase and other hydrolytic enzymes that destroy the female ovum.
B) Once the egg and the sperm join, an antigen-antibody reaction occurs, which kills the sperm.
C) An allergy to the female egg results in female infertility.
D) Antigen-antibody reaction in males causes destruction of sperm, resulting in infertility.

Question 51

Which of the following statements is not true about prostate cancer?

A) It is the most common nonskin cancer in American men.
B) The cancer can sometimes be detected by palpation.
C) The PSA test is used to detect prostate cancer.
D) All of the above are true about prostate cancer.

Question 52

Which of the following is not true of FSH?

A) It is produced in the anterior pituitary gland.
B) It increases the production of sperm.
C) It stimulates the secretion of testosterone.
D) Its secretion is inhibited by high testosterone levels.

Question 53

Functional sterility results when the sperm count per milliliter falls below _____ million.

A) 10
B) 25
C) 100
D) 150

Question 54

The function of Reinke crystalloids in the Leydig cells is:

A) to initiate the release of testosterone.
B) to assist in the process of spermatogenesis.
C) to communicate with Sertoli cells.
D) uncertain at this time.

Question 55

What reproductive duct has thick, muscular walls and can be palpated in the scrotal sac as a smooth, movable cord?

A) Vas deferens
B) Ejaculatory duct
C) Epididymis
D) Seminal vesicle

Question 56

The main advantage of sexual reproduction over asexual reproduction is:

A) only one parent is needed.
B) all the offspring are identical.
C) there is greater diversity in the offspring.
D) more offspring are produced.

Question 57

Which term means "hidden testis"?

A) Oligospermia
B) Phimosis
C) Cryptorchidism
D) Spermatogonia

Question 58

Which of the following statements is not true about the fluid produced by the seminal vesicles?

A) It contains prostaglandins.
B) It is alkaline and viscous.
C) It contains glucose as an energy source for sperm cells.
D) All of the above are true about the fluid produced by the seminal vesicles.

Question 59

The male perineum extends from the pubis anteriorly to what structure posteriorly?

A) Base of the scrotum
B) Coccyx
C) Anus
D) Gluteal folds

Question 60

Which of the following statements is not true of the bulbourethral gland?

A) It joins the urethra at the prostate gland.
B) It is also called the Cowper gland.
C) It is a compound tubuloalveolar gland.
D) It produces an alkaline secretion in semen.

Question 61

The prostate and the testes are essential organs of reproduction in males.

Question 62

The sustentacular cells produce and secrete testosterone.

Question 63

Cells of Leydig produce both sperm and testosterone.

Question 64

Sperm consist of a head, middle piece, and tail.

Question 65

Why is it important for adult men to have a regular prostate screening test?

A) Death from prostate cancer can be reduced if detected early enough for effective treatment.
B) Advanced cancerous growths in the gland cannot often be palpated through the wall of the rectum, and the lab tests will show whether metastatic tumors have started to grow.
C) The prostate-specific antigen, or PSA, test will show whether there is a decrease in testosterone, which leads to cancer growth.
D) Testing will show that an excess level of citrate found in the prostate fluid is a sign of cancer.

Question 66

The major function of the reproductive system is propagation of the species.

Question 67

In both sexes, the essential organs of reproduction are the testes.

Question 68

The left testis is generally located about 1 cm lower in the scrotal sac than the right.

Question 69

Capacitation of sperm occurs as they pass through the genital ducts.

Question 70

The perineum in the male extends from the symphysis pubis anteriorly and to the coccyx posteriorly.

Question 71

Testosterone has a marked inhibiting effect on protein anabolism.

Question 72

A high blood concentration of testosterone stimulates the anterior pituitary to secrete both FSH and LH.

Question 73

Seminal vesicles convey sperm to the outside of the body.

Question 74

Testosterone is responsible for producing secondary sex characteristics.

Question 75

The bulbourethral glands are a supporting structure of the male reproductive system.

Question 76

The anatomical structure of an epididymis consists of a head, neck, body, and tail.

Question 77

Androgenic hormones are masculinizing hormones.

Question 78

In a spermatozoon, a highly compact package of genetic chromatin material is located in the cylindrical middle piece.

Question 79

The penis is classified as an accessory organ of reproduction in the male.

Question 80

The acrosomal cap of the sperm contains a hydrolytic enzyme necessary for penetrating the egg.