Question 1

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 fertilized 
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 fertilized

Question 2

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. 
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.

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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)  libido 
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)  libido

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

Question 7

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)  trophoblast 
A)  ovarian follicle 
B)  placenta 
C)  corpus luteum 
D)  anterior pituitary 
E)  trophoblast

Question 8

Fetal testes secrete testosterone, and fetal ovaries secrete estrogen.

Accepted Answer

A) True 
 B)False

Question 9

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 10

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

Accepted Answer

A) True 
 B)False

Question 11

Spermatogonia line the lumen of the seminiferous tubule.

Accepted Answer

A) True 
 B)False

Question 12

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 13

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 these 
A)  testes 
B)  prostate gland 
C)  seminal vesicles 
D)  bulbourethral glands 
E)  all of these

Question 14

The normal site of fertilization is the

Accepted Answer

A)  ovary 
B)  uterus 
C)  fallopian tube 
D)  vagina 
E)  fimbria 
A)  ovary 
B)  uterus 
C)  fallopian tube 
D)  vagina 
E)  fimbria

Question 15

The corpus luteum develops from the polar body.

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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 these 
A)  primary spermatocytes; secondary spermatocytes 
B)  secondary spermatocytes; spermatids 
C)  spermatids; spermatozoa 
D)  spermatogonia; primary spermatocytes 
E)  none of these

Question 18

Secretion of progesterone inhibits GnRH secretion.

Accepted Answer

A) True 
 B)False

Question 19

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 formation 
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 formation

Question 20

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...

Exam 20: A--The Reproductive System

Birth control pills act as contraceptives by

During spermatogenesis:

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

Which of the following is not stimulated by testosterone?

A high level of estrogen stimulates myometrial contraction.

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

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

Fetal testes secrete testosterone, and fetal ovaries secrete estrogen.

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."

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

Spermatogonia line the lumen of the seminiferous tubule.

The primary reproductive organs in the male include the

The normal site of fertilization is the

The corpus luteum develops from the polar body.

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

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

Secretion of progesterone inhibits GnRH secretion.

Fertilization is characterized by

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

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

B--The Reproductive System

Filters

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