Question 1

Inhibition of the decidual reaction would prevent placental formation.

Accepted Answer

A) True 
 B)False  True

Question 2

Tight junctions between ___________ are responsible for the formation of the blood-testis barrier.

Accepted Answer

A) Leydig cells 
B) Sertoli cells 
C) spermatogonial cells 
D) trophoblast cells 
A) Leydig cells 
B) Sertoli cells 
C) spermatogonial cells 
D) trophoblast cells B

Question 3

What structure of a mature follicle is a barrier to sperm and fertilization?

Accepted Answer

A) zona pellucida 
B) corona radiata 
C) antrum 
D) cumulus oophorus 
A) zona pellucida 
B) corona radiata 
C) antrum 
D) cumulus oophorus A

Question 4

Secretions of the Sertoli cells and cells of Leydig influence the functions of each other.

Accepted Answer

A) True 
 B)False

Question 5

A ball of about eight cells formed about 50 to 60 hours after fertilization is called a

Accepted Answer

A) zygote. 
B) morula. 
C) blastocyst. 
D) embryo. 
A) zygote. 
B) morula. 
C) blastocyst. 
D) embryo.

Question 6

The sensitivity of the uterus to oxytocin is increased by

Accepted Answer

A) prostaglandin. 
B) progesterone. 
C) testosterone. 
D) estrogen. 
A) prostaglandin. 
B) progesterone. 
C) testosterone. 
D) estrogen.

Question 7

Barr bodies are normally only found in the cells of female mammals.

Accepted Answer

A) True 
 B)False

Question 8

Those with testicular feminization syndrome have

Accepted Answer

A) an extra X chromosome. 
B) a missing X chromosome. 
C) an extra chromosome 23. 
D) no chromosomal number abnormalities. 
A) an extra X chromosome. 
B) a missing X chromosome. 
C) an extra chromosome 23. 
D) no chromosomal number abnormalities.

Question 9

What type of genetic change occurs when an allele is silenced by methylation of cytosine bases?

Accepted Answer

A) genomic 
B) epigenetic 
C) mutation 
D) None of the choices is correct. 
A) genomic 
B) epigenetic 
C) mutation 
D) None of the choices is correct.

Question 10

Pubic and axillary hair growth at puberty is from increased secretion of

Accepted Answer

A) anterior pituitary gonadotropins. 
B) estrogen and testosterone from the onads. 
C) androgens from the adrenal cortex. 
D) melatonin from the pineal glanD. 
A) anterior pituitary gonadotropins. 
B) estrogen and testosterone from the onads. 
C) androgens from the adrenal cortex. 
D) melatonin from the pineal glanD.

Question 11

The blastocyst consists of the

Accepted Answer

A) blastocyst and amnion. 
B) morula and placenta. 
C) chorion and inner cell mass. 
D) embryo and chorion. 
A) blastocyst and amnion. 
B) morula and placenta. 
C) chorion and inner cell mass. 
D) embryo and chorion.

Question 12

In males,conversion of testosterone to estrogen in the brain is essential for normal regulation of LH secretion.

Accepted Answer

A) True 
 B)False

Question 13

What is the principle sex steroid in males?

Accepted Answer

A) estrogen 
B) testosterone 
C) progesterone 
D) aldosterone 
A) estrogen 
B) testosterone 
C) progesterone 
D) aldosterone

Question 14

Removal of the ___________ would result in a lack of energy in the semen to support the sperm cells.

Accepted Answer

A) seminal vesicles 
B) prostate 
C) testis 
D) epididymis 
A) seminal vesicles 
B) prostate 
C) testis 
D) epididymis

Question 15

The Contraceptive Pill contains

Accepted Answer

A) FSH. 
B) estrogen. 
C) progesterone. 
D) estrogen and progesterone. 
A) FSH. 
B) estrogen. 
C) progesterone. 
D) estrogen and progesterone.

Question 16

Genetic disorders can be detected earliest by

Accepted Answer

A) amniocentesis. 
B) chorionic villus biopsy. 
C) newborn screening. 
D) ultrasounD. 
A) amniocentesis. 
B) chorionic villus biopsy. 
C) newborn screening. 
D) ultrasounD.

Question 17

Testosterone levels in the male embryo and fetus are very high throughout the prenatal period.

Accepted Answer

A) True 
 B)False

Question 18

The embryonic urethral fold becomes the female

Accepted Answer

A) labia minorA. 
B) labia majora. 
C) glans clitoris. 
D) All of these choices are correct. 
A) labia minorA. 
B) labia majora. 
C) glans clitoris. 
D) All of these choices are correct.

Question 19

What process occurs as the zygote travels towards the uterus in the fallopian tubes?

Accepted Answer

A) cleavage 
B) fertilization 
C) capacitation 
D) polyspermy 
A) cleavage 
B) fertilization 
C) capacitation 
D) polyspermy

Question 20

The last embryonic tissue layer to form is the

Accepted Answer

A) trophoblast. 
B) endoderm. 
C) ectoderm. 
D) mesoderm. 
A) trophoblast. 
B) endoderm. 
C) ectoderm. 
D) mesoderm.

Inhibition of the decidual reaction would prevent placental formation.

Tight junctions between ___________ are responsible for the formation of the blood-testis barrier.

What structure of a mature follicle is a barrier to sperm and fertilization?

Secretions of the Sertoli cells and cells of Leydig influence the functions of each other.

A ball of about eight cells formed about 50 to 60 hours after fertilization is called a

The sensitivity of the uterus to oxytocin is increased by

Barr bodies are normally only found in the cells of female mammals.

Those with testicular feminization syndrome have

What type of genetic change occurs when an allele is silenced by methylation of cytosine bases?

Pubic and axillary hair growth at puberty is from increased secretion of

The blastocyst consists of the

In males,conversion of testosterone to estrogen in the brain is essential for normal regulation of LH secretion.

What is the principle sex steroid in males?

Removal of the ___________ would result in a lack of energy in the semen to support the sperm cells.

The Contraceptive Pill contains

Genetic disorders can be detected earliest by

Testosterone levels in the male embryo and fetus are very high throughout the prenatal period.

The embryonic urethral fold becomes the female

What process occurs as the zygote travels towards the uterus in the fallopian tubes?

The last embryonic tissue layer to form is the

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

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Exam 20: Reproduction

Inhibition of the decidual reaction would prevent placental formation.

Tight junctions between ___________ are responsible for the formation of the blood-testis barrier.

What structure of a mature follicle is a barrier to sperm and fertilization?

Secretions of the Sertoli cells and cells of Leydig influence the functions of each other.

A ball of about eight cells formed about 50 to 60 hours after fertilization is called a

The sensitivity of the uterus to oxytocin is increased by

Barr bodies are normally only found in the cells of female mammals.

Those with testicular feminization syndrome have

What type of genetic change occurs when an allele is silenced by methylation of cytosine bases?

Pubic and axillary hair growth at puberty is from increased secretion of

The blastocyst consists of the

In males,conversion of testosterone to estrogen in the brain is essential for normal regulation of LH secretion.

What is the principle sex steroid in males?

Removal of the ___________ would result in a lack of energy in the semen to support the sperm cells.

The Contraceptive Pill contains

Genetic disorders can be detected earliest by

Testosterone levels in the male embryo and fetus are very high throughout the prenatal period.

The embryonic urethral fold becomes the female

What process occurs as the zygote travels towards the uterus in the fallopian tubes?

The last embryonic tissue layer to form is the

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

Interactions Between Cells and the Extracellular Environment

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Filters