Question 1

Nurse cells secrete inhibin,which regulates the rate of sperm production.

Accepted Answer

A) True 
 B)False

Question 2

In meiosis,each parent cell produces __________.

Accepted Answer

A)   two haploid (n) cells
B)   four haploid (n) cells
C)   two diploid (2n) cells
D)   four diploid (2n) cells
E)   haploid (n) cells that are identical to the parent cellF) A) and E)
G) A) and B)

Question 3

The mechanism that keeps the testes cooler than the body's core temperature is called descent of the testes.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following hormones directly stimulates the development of male secondary sex characteristics?

Accepted Answer

A)   Estrogen
B)   Inhibin
C)   Luteinizing hormone
D)   Follicle stimulating hormone
E)   TestosteroneF) B) and C)
G) A) and B)

Question 5

Sperm travels to the ampulla of the ductus deferens before reaching the spermatic cord.

Accepted Answer

A) True 
 B)False

Question 6

Sexual reproduction entails the union of two gonads to form a zygote.

Accepted Answer

A) True 
 B)False

Question 7

The scrotum contains the testes and spermatic cords.

Accepted Answer

A) True 
 B)False

Question 8

Heart rate,blood pressure,and respiratory rate peak during the __________.

Accepted Answer

A)   excitement phase
B)   erection of the penis
C)   climax (orgasm) 
D)   plateau phase
E)   resolution phaseF) All of the above
G) A) and C)

Question 9

The process of spermatogenesis and spermiogenesis begins with a __________ and ends with four __________.

Accepted Answer

A)   sperm cell;interstitial cells
B)   sperm cell;nurse cells
C)   secondary spermatocyte;spermatocytes in general
D)   secondary spermatocyte;germ cells
E)   germ cell;gametesF) A) and E)
G) A) and B)

Question 10

Testosterone stimulates development of the secondary sex characteristics,spermatogenesis,and libido.

Accepted Answer

A) True 
 B)False

Question 11

At what stage does a developing sperm cell begin to grow a tail?

Accepted Answer

A)   Spermatozoon
B)   Spermatid
C)   Primary spermatocyte
D)   Secondary spermatocyte
E)   SpermatogoniumF) A) and E)
G) C) and E)

Question 12

__________ have 46 chromosomes,whereas __________ have 23.

Accepted Answer

A)   Spermatids;spermatozoa
B)   Primary spermatocytes;spermatids
C)   Secondary spermatocytes;primary spermatocytes
D)   Spermatogonia;primary spermatocytes
E)   Type A spermatogonia;type B spermatogoniaF) D) and E)
G) B) and E)

Question 13

A sperm count any lower than __________ million sperm per mL of semen is usually associated with infertility (sterility) .

Accepted Answer

A)   250 to 500
B)   200 to 250
C)   100 to 200
D)   50 to 100
E)   20 to 25F) B) and E)
G) B) and D)

Question 14

By volume,most of the semen is produced in the __________.

Accepted Answer

A)   testes
B)   penis
C)   prostate
D)   seminal vesicles
E)   bulbourethral glandsF) A) and B)
G) B) and D)

Question 15

Gonads begin to develop __________ weeks after fertilization.

Accepted Answer

A)   2 to 3
B)   5 to 6
C)   8 to 9
D)   20 to 24
E)   36 to 38F) A) and C)
G) C) and E)

Question 16

Sympathetic nerve fibers trigger the secretion of nitric oxide,which dilates the deep arteries allowing blood to engorge the penis.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is generally accepted as a secondary sex characteristic?

Accepted Answer

A)   The enlargement of the breasts
B)   The presence of testes
C)   The prostate
D)   The uterus
E)   The vaginaF) B) and D)
G) B) and C)

Question 18

Male infertility (sterility) refers to _________.

Accepted Answer

A)   the inability to fertilize an egg
B)   low sperm count
C)   a lack of seminal fluid during ejaculation
D)   low levels of testosterone
E)   the inability to have an erectionF) C) and E)
G) A) and B)

Question 19

The __________ is an example of the female external genitalia.

Accepted Answer

A)   scrotum
B)   clitoris
C)   uterine tube
D)   seminal vesicle
E)   vaginaF) None of the above
G) A) and B)

Question 20

Sperm make up just 10% of semen volume.

Accepted Answer

A) True 
 B)False

Exam 27: The Male Reproductive System

The mechanism that keeps the testes cooler than the body's core temperature is called descent of the testes.

Correct AnswerverifiedShow Answer

Sympathetic nerve fibers trigger the secretion of nitric oxide,which dilates the deep arteries allowing blood to engorge the penis.

Correct AnswerverifiedShow Answer

Sperm travels to the ampulla of the ductus deferens before reaching the spermatic cord.

Correct AnswerverifiedShow Answer

Heart rate,blood pressure,and respiratory rate peak during the __________.

Correct AnswerverifiedShow Answer

Nurse cells secrete inhibin,which regulates the rate of sperm production.

Correct AnswerverifiedShow Answer

Testosterone stimulates development of the secondary sex characteristics,spermatogenesis,and libido.

Correct AnswerverifiedShow Answer

Sexual reproduction entails the union of two gonads to form a zygote.

Correct AnswerverifiedShow Answer

At what stage does a developing sperm cell begin to grow a tail?

Correct AnswerverifiedShow Answer

Male infertility (sterility) refers to _________.

Correct AnswerverifiedShow Answer

__________ have 46 chromosomes,whereas __________ have 23.

Correct AnswerverifiedShow Answer

Which of the following is generally accepted as a secondary sex characteristic?

Correct AnswerverifiedShow Answer

Sperm make up just 10% of semen volume.

Correct AnswerverifiedShow Answer

Which of the following hormones directly stimulates the development of male secondary sex characteristics?

Correct AnswerverifiedShow Answer

Gonads begin to develop __________ weeks after fertilization.

Correct AnswerverifiedShow Answer

In meiosis,each parent cell produces __________.

Correct AnswerverifiedShow Answer

A sperm count any lower than __________ million sperm per mL of semen is usually associated with infertility (sterility) .

Correct AnswerverifiedShow Answer

The __________ is an example of the female external genitalia.

Correct AnswerverifiedShow Answer

The scrotum contains the testes and spermatic cords.

Correct AnswerverifiedShow Answer

The process of spermatogenesis and spermiogenesis begins with a __________ and ends with four __________.

Correct AnswerverifiedShow Answer

By volume,most of the semen is produced in the __________.

Correct AnswerverifiedShow Answer

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have 46 chromosomes,whereas have 23.

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The process of spermatogenesis and spermiogenesis begins with a and ends with four .

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