Question 1

The third and final stage of labor involves the actual birth of the baby.

Accepted Answer

A) True 
 B)False

Question 2

One spermatogonium containing 46 chromosomes yields two spermatozoa each containing 23 chromosomes.

Accepted Answer

A) True 
 B)False

Question 3

A human body cell normally has 46 autosomes.

Accepted Answer

A) True 
 B)False

Question 4

During oogenesis:

Accepted Answer

A)  Thousands of primary oocytes are formed. 
B)  One primary oocyte yields 16 mature ova. 
C)  One primary oocyte yields one mature ovum. 
D)  Each ovum contains 46 chromosomes at the time of ovulation. 
E)  Sex hormones reach their lowest levels. 
A)  Thousands of primary oocytes are formed. 
B)  One primary oocyte yields 16 mature ova. 
C)  One primary oocyte yields one mature ovum. 
D)  Each ovum contains 46 chromosomes at the time of ovulation. 
E)  Sex hormones reach their lowest levels.

Question 5

If several sperm fertilize a single ovum as it is dividing, twins or even triplets may result.

Accepted Answer

A) True 
 B)False

Question 6

Which statement is correct?

Accepted Answer

A)  An XY combination of sex chromosomes is a genetic male. 
B)  The secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract. 
C)  The secretion of estrogen by the fetal gonads induces the development of female external genitalia and reproductive tract. 
D)  An XY combination of sex chromosomes is a genetic male, and the secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract. 
E)  All of these. 
A)  An XY combination of sex chromosomes is a genetic male. 
B)  The secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract. 
C)  The secretion of estrogen by the fetal gonads induces the development of female external genitalia and reproductive tract. 
D)  An XY combination of sex chromosomes is a genetic male, and the secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract. 
E)  All of these.

Question 7

Complete each of the following statments.
The four phases of the sexual cycle in both sexes are ____________________, ____________________, ____________________, and ____________________.

Accepted Answer

excitement

Question 8

Suckling stimulates oxytocin and prolactin secretion.

Accepted Answer

A) True 
 B)False

Question 9

Which is the correct sequence of structures sperm travels through prior to ejaculation?

Accepted Answer

A)  ductus deferens, epididymis, ejaculatory duct, urethra 
B)  urethra, ductus deferens, epididymis, ejaculatory duct 
C)  epididymis, ductus deferens, ejaculatory duct, urethra 
D)  epididymis, ductus deferens, urethra, ejaculatory duct 
E)  ejaculatory duct, ductus deferens, epididymis, urethra 
A)  ductus deferens, epididymis, ejaculatory duct, urethra 
B)  urethra, ductus deferens, epididymis, ejaculatory duct 
C)  epididymis, ductus deferens, ejaculatory duct, urethra 
D)  epididymis, ductus deferens, urethra, ejaculatory duct 
E)  ejaculatory duct, ductus deferens, epididymis, urethra

Question 10

Some of the precursors for secretion of hormones by the placenta come from the fetal adrenal cortex.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)  providing a blood-testes barrier 
B)  phagocytizing cytoplasm extruded from sperm during their development 
C)  secreting testosterone 
D)  secreting androgen-binding protein 
E)  providing nourishment for developing sperm 
A)  providing a blood-testes barrier 
B)  phagocytizing cytoplasm extruded from sperm during their development 
C)  secreting testosterone 
D)  secreting androgen-binding protein 
E)  providing nourishment for developing sperm

Question 12

The developing sperm cells arising from a single primary spermatocyte remain joined by cytoplasmic bridges until development is complete so that a Y-bearing sperm can be provided with essential products coded for by the X chromosome.

Accepted Answer

A) True 
 B)False

Question 13

Menstruation is initiated by a rapid

Accepted Answer

A)  increase in estrogen levels 
B)  drop in estrogen levels 
C)  drop in progesterone levels 
D)  increase in estrogen levels and drop in progesterone levels 
E)  drop in estrogen levels and drop in progesterone levels 
A)  increase in estrogen levels 
B)  drop in estrogen levels 
C)  drop in progesterone levels 
D)  increase in estrogen levels and drop in progesterone levels 
E)  drop in estrogen levels and drop in progesterone levels

Question 14

Prostaglandins

Accepted Answer

A)  present in the semen are secreted by the prostate gland 
B)  are involved in sperm transport within both the male and female reproductive tracts 
C)  exert a powerful inhibitory effect on uterine musculature 
D)  are all derivatives of essential amino acids 
E)  exert influences only on the reproductive system 
A)  present in the semen are secreted by the prostate gland 
B)  are involved in sperm transport within both the male and female reproductive tracts 
C)  exert a powerful inhibitory effect on uterine musculature 
D)  are all derivatives of essential amino acids 
E)  exert influences only on the reproductive system

Question 15

Developing follicles that fail to reach maturity to ovulate undergo atresia and form scar tissue.

Accepted Answer

A) True 
 B)False

Question 16

During the ovarian cycle, the corpus luteum becomes a follicle.

Accepted Answer

A) True 
 B)False

Question 17

An increase in the secretion of ____ initiates the beginning of the ovarian cycle.

Accepted Answer

A)  estrogen 
B)  progesterone 
C)  LH 
D)  FSH 
E)  prolactin 
A)  estrogen 
B)  progesterone 
C)  LH 
D)  FSH 
E)  prolactin

Question 18

In the absence of masculinizing factors, a female reproductive tract and external genitalia develop regardless of the genetic sex of the individual.

Accepted Answer

A) True 
 B)False

Question 19

When is the secretion of progesterone at a low level?

Accepted Answer

A)  menstrual phase 
B)  proliferative phase 
C)  secretory, or progestational, phase 
D)  menstrual and proliferative phase 
E)  proliferative phase and secretory, or progestational, phase 
A)  menstrual phase 
B)  proliferative phase 
C)  secretory, or progestational, phase 
D)  menstrual and proliferative phase 
E)  proliferative phase and secretory, or progestational, phase

Question 20

Progesterone

Accepted Answer

A)  exerts a strong inhibitory influence on the uterine musculature 
B)  is responsible for the development and maintenance of female secondary sex characteristics 
C)  promotes duct development in the breasts 
D)  exerts a strong inhibitory influence on the uterine musculature and promotes duct development in the breasts 
E)  none of these 
A)  exerts a strong inhibitory influence on the uterine musculature 
B)  is responsible for the development and maintenance of female secondary sex characteristics 
C)  promotes duct development in the breasts 
D)  exerts a strong inhibitory influence on the uterine musculature and promotes duct development in the breasts 
E)  none of these

Exam 20: A--The Reproductive System

The third and final stage of labor involves the actual birth of the baby.

One spermatogonium containing 46 chromosomes yields two spermatozoa each containing 23 chromosomes.

A human body cell normally has 46 autosomes.

During oogenesis:

If several sperm fertilize a single ovum as it is dividing, twins or even triplets may result.

Which statement is correct?

Complete each of the following statments. The four phases of the sexual cycle in both sexes are ____________________, ____________________, ____________________, and ____________________.

Suckling stimulates oxytocin and prolactin secretion.

Which is the correct sequence of structures sperm travels through prior to ejaculation?

Some of the precursors for secretion of hormones by the placenta come from the fetal adrenal cortex.

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

The developing sperm cells arising from a single primary spermatocyte remain joined by cytoplasmic bridges until development is complete so that a Y-bearing sperm can be provided with essential products coded for by the X chromosome.

Menstruation is initiated by a rapid

Prostaglandins

Developing follicles that fail to reach maturity to ovulate undergo atresia and form scar tissue.

During the ovarian cycle, the corpus luteum becomes a follicle.

An increase in the secretion of ____ initiates the beginning of the ovarian cycle.

In the absence of masculinizing factors, a female reproductive tract and external genitalia develop regardless of the genetic sex of the individual.

When is the secretion of progesterone at a low level?

Progesterone

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

Complete each of the following statments. The four phases of the sexual cycle in both sexes are , , , and .