Question 1

The acrosome contains enzymes used to __________.

Accepted Answer

A)   dissolve the mucosa of the vagina
B)   dissolve the mucosa of the uterus
C)   dissolve the stickiness of the semen
D)   penetrate the vagina
E)   penetrate barriers surrounding the ovumF) A) and B)
G) C) and D)

Question 2

Erectile dysfunction prevents ejaculation in most cases.

Accepted Answer

A) True 
 B)False  False

Question 3

The __________ is the gonad and the __________ is the gamete.

Accepted Answer

A)   testis;ovary
B)   testis;semen
C)   testis;sperm
D)   sperm;semen
E)   semen;spermF) A) and D)
G) All of the above C

Question 4

In the process of spermiogenesis,__________ become __________.

Accepted Answer

A)   spermatocytes;spermatozoa
B)   spermatozoa;spermatids
C)   spermatogonia;spermatocytes
D)   spermatocytes;spermatids
E)   spermatids;spermatozoaF) A) and E)
G) A) and D) E

Question 5

The orgasm-emission phase of the male sexual response is stimulated by __________.

Accepted Answer

A)   efferent sympathetic signals from the sacral region of the spinal cord
B)   efferent sympathetic signals from the lumbar region of the spinal cord
C)   efferent parasympathetic signals from the sacral region of the spinal cord
D)   efferent parasympathetic signals from the lumbar region of the spinal cord
E)   efferent somatic signals from the thoracic region of the spinal cordF) A) and B)
G) A) and C)

Question 6

At the end of meiosis I there are __________,whereas at the end of meiosis II there is/are __________.

Accepted Answer

A)   two diploid (2n) cells;one diploid (2n) cell
B)   two diploid (2n) cells;one haploid (n) cell
C)   two diploid (2n) cells;four haploid (n) cells
D)   two haploid (n) cells;four haploid (n) cells
E)   two haploid (n) cells;one diploid (2n) cellF) A) and E)
G) A) and D)

Question 7

Which of the following explains the neural mechanism of an erection?

Accepted Answer

A)   It is an autonomic reflex mediated predominantly by parasympathetic nerve fibers.
B)   It is an autonomic reflex mediated predominantly by sympathetic nerve fibers.
C)   It is a somatic reflex mediated predominantly by parasympathetic nerve fibers.
D)   It is a somatic reflex mediated predominantly by sympathetic nerve fibers.
E)   It is an exclusively voluntary action mediated by the cerebral cortex.F) C) and D)
G) C) and E)

Question 8

Genetic males are XY and genetic females are XX.

Accepted Answer

A) True 
 B)False

Question 9

Spermiogenesis is the last stage of meiosis.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is true regarding the blood-testis barrier?

Accepted Answer

A)   It prevents antibodies in the blood from getting to the germ cells.
B)   It prevents heat loss from the testes.
C)   It prevents blood from getting to the testes.
D)   It maintains testis temperature at 35°C.
E)   It maintains testis temperature at 37°C.F) B) and D)
G) A) and B)

Question 11

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

Accepted Answer

A)   They secrete inhibin.
B)   They secrete androgen-binding protein.
C)   They secrete testosterone.
D)   They protect and support the germ cells.
E)   Their tight junctions form the blood-testis barrier.F) A) and B)
G) C) and D)

Question 12

Males produce sperm and females produce eggs.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is not a change in the male body that results from puberty?

Accepted Answer

A)   Deepening of the voice
B)   Gain in muscle mass
C)   Growth of the scrotum and penis
D)   Acne
E)   These are all changes associated with male puberty.F) A) and B)
G) A) and C)

Question 14

Which of the following is a secondary sex organ?

Accepted Answer

A)   Testis
B)   Ovary
C)   Vagina
D)   Facial hair
E)   Distribution of body fatF) B) and D)
G) B) and C)

Question 15

Only germ cells undergo meiosis,which produces four haploid (n)cells with 23 chromosomes each.

Accepted Answer

A) True 
 B)False

Question 16

Myotonia of skeletal muscles is characteristic of the excitement phase and refractory period.

Accepted Answer

A) True 
 B)False

Question 17

The haploid (n) result of meiosis I is called a __________.

Accepted Answer

A)   spermatogonium
B)   secondary spermatocyte
C)   primary spermatocyte
D)   spermatid
E)   spermF) A) and E)
G) A) and D)

Question 18

The gene that codes for the testis-determining factor (TDF) is found in or on the __________.

Accepted Answer

A)   Y chromosome
B)   X chromosome
C)   gonadal ridges
D)   fetal testes
E)   mesonephrosF) A) and B)
G) C) and E)

Question 19

Which of the following is the correct pathway of sperm cells from their formation to ejaculation?

Accepted Answer

A)   Seminiferous tubule,epididymis,rete testis,urethra,ejaculatory duct,ductus deferens
B)   Seminiferous tubule,epididymis,rete testis,ejaculatory duct,ductus deferens,urethra
C)   Seminiferous tubule,epididymis,rete testis,ductus deferens,ejaculatory duct,urethra
D)   Seminiferous tubule,rete testis,epididymis,ductus deferens,ejaculatory duct,urethra
E)   Seminiferous tubule,rete testis,epididymis,ejaculatory duct,urethra,ductus deferensF) B) and C)
G) A) and E)

Question 20

Which of the following does not play a role in thermoregulation of the testes?

Accepted Answer

A)   The bulbospongiosus muscle
B)   The cremaster
C)   The pampiniform plexus of veins
D)   The countercurrent heat exchanger
E)   The dartos muscleF) A) and B)
G) C) and D)

Exam 27: The Male Reproductive System

The acrosome contains enzymes used to __________.

Correct AnswerverifiedShow Answer

Erectile dysfunction prevents ejaculation in most cases.

Correct AnswerverifiedFalse

The __________ is the gonad and the __________ is the gamete.

Correct AnswerverifiedC

In the process of spermiogenesis,__________ become __________.

Correct AnswerverifiedE

The orgasm-emission phase of the male sexual response is stimulated by __________.

Correct AnswerverifiedShow Answer

At the end of meiosis I there are __________,whereas at the end of meiosis II there is/are __________.

Correct AnswerverifiedShow Answer

Which of the following explains the neural mechanism of an erection?

Correct AnswerverifiedShow Answer

Genetic males are XY and genetic females are XX.

Correct AnswerverifiedShow Answer

Spermiogenesis is the last stage of meiosis.

Correct AnswerverifiedShow Answer

Which of the following is true regarding the blood-testis barrier?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Males produce sperm and females produce eggs.

Correct AnswerverifiedShow Answer

Which of the following is not a change in the male body that results from puberty?

Correct AnswerverifiedShow Answer

Which of the following is a secondary sex organ?

Correct AnswerverifiedShow Answer

Only germ cells undergo meiosis,which produces four haploid (n)cells with 23 chromosomes each.

Correct AnswerverifiedShow Answer

Myotonia of skeletal muscles is characteristic of the excitement phase and refractory period.

Correct AnswerverifiedShow Answer

The haploid (n) result of meiosis I is called a __________.

Correct AnswerverifiedShow Answer

The gene that codes for the testis-determining factor (TDF) is found in or on the __________.

Correct AnswerverifiedShow Answer

Which of the following is the correct pathway of sperm cells from their formation to ejaculation?

Correct AnswerverifiedShow Answer

Which of the following does not play a role in thermoregulation of the testes?

Correct AnswerverifiedShow Answer

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False

The is the gonad and the is the gamete.

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C

In the process of spermiogenesis, become .

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E

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At the end of meiosis I there are ,whereas at the end of meiosis II there is/are .

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