Question 1

The corpus luteum develops from the polar body.

Accepted Answer

A) True 
 B)False

Question 2

The primary reproductive organs in the male include the

Accepted Answer

A)   testes
B)   prostate gland
C)   seminal vesicles
D)   bulbourethral glands
E)   all of theseF) B) and C)
G) A) and E)

Question 3

At puberty, the hypothalamus becomes more sensitive to feedback inhibition by testosterone.

Accepted Answer

A) True 
 B)False

Question 4

Spermatogonia line the lumen of the seminiferous tubule.

Accepted Answer

A) True 
 B)False

Question 5

A high level of estrogen stimulates myometrial contraction.

Accepted Answer

A) True 
 B)False

Question 6

A reduction in the secretion of ____ may serve as the trigger for the onset of puberty.

Accepted Answer

A)   inhibin
B)   melatonin
C)   adrenal androgens
D)   gonadotropin-releasing hormone
E)   pituitary gonadotropic hormonesF) B) and E)
G) A) and D)

Question 7

Fetal testes secrete testosterone, and fetal ovaries secrete estrogen.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is not stimulated by testosterone?

Accepted Answer

A)   masculinization of the developing reproductive tract and external genitalia
B)   descent of the testes into the scrotum
C)   spermatid remodeling
D)   development and maintenance of male secondary sexual characteristics
E)   libidoF) B) and E)
G) A) and D)

Question 9

During spermatogenesis, the first meiotic division yields two ____, and the second meiotic division yields four ____.

Accepted Answer

A)   primary spermatocytes; secondary spermatocytes
B)   secondary spermatocytes; spermatids
C)   spermatids; spermatozoa
D)   spermatogonia; primary spermatocytes
E)   none of theseF) None of the above
G) D) and E)

Question 10

During spermatogenesis:

Accepted Answer

A)   FSH is required for spermatid remodeling.
B)   LH is required for spermatid remodeling.
C)   Testosterone is essential for both mitosis and meiosis in the germ cells.
D)   FSH is required for spermatid remodeling, and testosterone is essential for both mitosis and meiosis in the germ cells.
E)   LH is required for spermatid remodeling, and testosterone is essential for both mitosis and meiosis in the germ cells.F) A) and E)
G) B) and D)

Question 11

A high local concentration of testosterone within the seminiferous tubules is essential for sustaining sperm production.

Accepted Answer

A) True 
 B)False

Question 12

Secretion of progesterone inhibits GnRH secretion.

Accepted Answer

A) True 
 B)False

Question 13

Birth control pills act as contraceptives by

Accepted Answer

A)   preventing development of the endometrium into a suitable site for implantation
B)   preventing ovulation by inhibiting GnRH and thus FSH and LH secretion
C)   killing sperm
D)   precipitating in the cervical canal to act as a barrier to sperm entry
E)   increasing muscular contractions in the female reproductive tract so that ovulated eggs are flushed out before they have a chance to be fertilizedF) B) and D)
G) C) and D)

Question 14

What is the source of estrogen and progesterone during the first 10 weeks of pregnancy?

Accepted Answer

A)   ovarian follicle
B)   placenta
C)   corpus luteum
D)   anterior pituitary
E)   trophoblastF) A) and C)
G) B) and C)

Question 15

Luteinizing hormone and follicle-stimulating hormone are secreted by the gonads.

Accepted Answer

A) True 
 B)False

Question 16

When the entire uterine contents shift downward during late gestation so that the baby's head is brought into contact with the cervix, this is often mistaken as the onset of labor, so-called "false labor."

Accepted Answer

A) True 
 B)False

Question 17

The normal site of fertilization is the

Accepted Answer

A)   ovary
B)   uterus
C)   fallopian tube
D)   vagina
E)   fimbriaF) B) and E)
G) A) and D)

Question 18

Complete each of the following statments.
The ____________________ of a spermatozoon contains the sperm's genetic information; the ____________________ is an enzyme-filled vesicle for penetrating an ovum; power-generating mitochondria are concentrated in the sperm's ____________________; the ____________________ is a whip-like structure comprised of microtubules.

Accepted Answer

head, acro...

Question 19

Complete each of the following statments.
Forty-four of the 46 chromosomes in a human body cell are ____________________.

Accepted Answer

The answer of Complete each of the following statments.
Forty-four of...

Question 20

Fertilization is characterized by

Accepted Answer

A)   a sperm's fertilin proteins binding to the follicle's integrin molecules
B)   a block to polyspermy
C)   multiple sperms penetrating the ovum
D)   blastocyst formation
E)   a block to polyspermy and blastocyst formationF) D) and E)
G) C) and E)

Exam 20: A--The Reproductive System

A reduction in the secretion of ____ may serve as the trigger for the onset of puberty.

Correct AnswerverifiedShow Answer

A high level of estrogen stimulates myometrial contraction.

Correct AnswerverifiedShow Answer

Birth control pills act as contraceptives by

Correct AnswerverifiedShow Answer

What is the source of estrogen and progesterone during the first 10 weeks of pregnancy?

Correct AnswerverifiedShow Answer

Fetal testes secrete testosterone, and fetal ovaries secrete estrogen.

Correct AnswerverifiedShow Answer

During spermatogenesis:

Correct AnswerverifiedShow Answer

When the entire uterine contents shift downward during late gestation so that the baby's head is brought into contact with the cervix, this is often mistaken as the onset of labor, so-called "false labor."

Correct AnswerverifiedShow Answer

During spermatogenesis, the first meiotic division yields two ____, and the second meiotic division yields four ____.

Correct AnswerverifiedShow Answer

Spermatogonia line the lumen of the seminiferous tubule.

Correct AnswerverifiedShow Answer

Which of the following is not stimulated by testosterone?

Correct AnswerverifiedShow Answer

At puberty, the hypothalamus becomes more sensitive to feedback inhibition by testosterone.

Correct AnswerverifiedShow Answer

Complete each of the following statments. Forty-four of the 46 chromosomes in a human body cell are ____________________.

Correct AnswerverifiedShow Answer

Luteinizing hormone and follicle-stimulating hormone are secreted by the gonads.

Correct AnswerverifiedShow Answer

Correct Answerverifiedhead, acro...View AnswerShow Answer

The corpus luteum develops from the polar body.

Correct AnswerverifiedShow Answer

The primary reproductive organs in the male include the

Correct AnswerverifiedShow Answer

A high local concentration of testosterone within the seminiferous tubules is essential for sustaining sperm production.

Correct AnswerverifiedShow Answer

Secretion of progesterone inhibits GnRH secretion.

Correct AnswerverifiedShow Answer

The normal site of fertilization is the

Correct AnswerverifiedShow Answer

Fertilization is characterized by

Correct AnswerverifiedShow Answer

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During spermatogenesis, the first meiotic division yields two , and the second meiotic division yields four .

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head, acro...
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