Question 1

A zygote with the genotype XO will

Accepted Answer

A)  develop into a female. 
B)  have Turner's syndrome. 
C)  develop into a male. 
D)  die. 
E)  develop into a female and have Turner's syndrome. 
A)  develop into a female. 
B)  have Turner's syndrome. 
C)  develop into a male. 
D)  die. 
E)  develop into a female and have Turner's syndrome.

Question 2

During gestation, powerful uterine contractions are suppressed by elevated levels of

Accepted Answer

A)  progesterone. 
B)  estrogen. 
C)  oxytocin. 
D)  prostaglandins. 
E)  All of the answers are correct. 
A)  progesterone. 
B)  estrogen. 
C)  oxytocin. 
D)  prostaglandins. 
E)  All of the answers are correct.

Question 3

Which of the following is responsible for driving the female libido?

Accepted Answer

A)  estrogen 
B)  progesterone 
C)  lutenizing hormone 
D)  adrenal androgens 
E)  gonadotropin releasing hormone 
A)  estrogen 
B)  progesterone 
C)  lutenizing hormone 
D)  adrenal androgens 
E)  gonadotropin releasing hormone

Question 4

Explain how modern birth control pills work as contraceptives.

Accepted Answer

Birth control pills contain hormones suc

Question 5

Mrs.Becker is trying to become pregnant.One of the Beckers' favorite ways of relaxation is to soak in the hot tub while drinking wine.A year has gone by with no pregnancy occurring, so they visit your clinic.You conclude that the hot tub is a possible factor in Mr.Becker's infertility.Angered and insulted, both assure you that they have no difficulty having intercourse, unless Mr.Becker has had too much wine, which happens infrequently.How will you explain to them the difference between impotence and infertility? Why should you suspect the hot tub as a factor in Mr.Becker's lowered sperm count? Is the wine a factor as well?

Accepted Answer

Impotence is the inability to sustain an

Question 6

Which of the following does not occur during labor?

Accepted Answer

A)  Prostaglandins produced in the uterine wall. 
B)  Stretch occurs in the cervix. 
C)  Uterine contractions occur. 
D)  Fetus drops lower in the uterus. 
E)  Oxytocin released from the anterior pituitary. 
A)  Prostaglandins produced in the uterine wall. 
B)  Stretch occurs in the cervix. 
C)  Uterine contractions occur. 
D)  Fetus drops lower in the uterus. 
E)  Oxytocin released from the anterior pituitary.

Question 7

The surge in LH that occurs during the middle of the ovarian cycle triggers

Accepted Answer

A)  follicle maturation. 
B)  menstruation. 
C)  ovulation. 
D)  menopause. 
E)  atresia. 
A)  follicle maturation. 
B)  menstruation. 
C)  ovulation. 
D)  menopause. 
E)  atresia.

Question 8

What are the characteristics that determine gender (consider genetic, anatomical, hormonal, and other factors)? Is it always the case that genetic, psychological, and physical gender cues indicate the same gender? Explain your answer, citing specific examples of conditions in which there is gender conflict.

Accepted Answer

Gender is determined by sex chromosomes,

Question 9

Which of the following is responsible for sweeping the ovulated egg toward the Fallopian tube and away from the abdominal cavity?

Accepted Answer

A)  ovary 
B)  fimbriae 
C)  cervix 
D)  myometrium 
E)  uterus 
A)  ovary 
B)  fimbriae 
C)  cervix 
D)  myometrium 
E)  uterus

Question 10

Which of the following is responsible for the development of the Wolffian duct into the epididymis, vas deferens, and seminal vesicle?

Accepted Answer

A)  testosterone 
B)  estrogen 
C)  progesterone 
D)  testis determining SRY protein 
E)  anti-Müllerian hormone 
A)  testosterone 
B)  estrogen 
C)  progesterone 
D)  testis determining SRY protein 
E)  anti-Müllerian hormone

Question 11

The embryo forms from the

Accepted Answer

A)  placenta. 
B)  morula. 
C)  inner cell mass of the blastocyst. 
D)  outer layer of the blastocyst. 
E)  zona pellucida. 
A)  placenta. 
B)  morula. 
C)  inner cell mass of the blastocyst. 
D)  outer layer of the blastocyst. 
E)  zona pellucida.

Question 12

In males, which cells are the primary targets for FSH? What effect does the hormone have on these cells?

Accepted Answer

Sertoli cells; FSH stimulates

Question 13

Create a diagram explaining the feedback of estrogen on the anterior pituitary during the ovarian cycle.

Accepted Answer

During early/mid follicular phase, low l

Question 14

What seems to be the most likely hormone that we could use as a male contraceptive pill? Explain.

Accepted Answer

GnRH agonists would reduce the

Question 15

Describe the events that must occur in order for sperm to penetrate an egg.What prevents more than one sperm from entering? In the case of twins, how many sperm entered the egg? Why must a man have millions of sperm in a semen sample to be considered fertile? If only one sperm were present in the semen and that sperm managed to find its way to the egg, could it fertilize the egg? Explain.

Accepted Answer

The sperm must penetrate the corona radi

Question 16

Which form of contraception allows fertilization but prevents implantation?

Accepted Answer

A)  IUD 
B)  pill 
C)  female condom 
D)  diaphragm 
E)  sponge 
A)  IUD 
B)  pill 
C)  female condom 
D)  diaphragm 
E)  sponge

Question 17

Egg and sperm cells have

Accepted Answer

A)  46 chromosomes. 
B)  23 chromosomes. 
C)  just 22 pairs of autosomes plus one pair of sex chromosomes. 
D)  46 chromosomes and 23 chromosomes. 
E)  46 chromosomes, 23 chromosomes, and 22 pairs of autosomes plus one pair of sex chromosomes. 
A)  46 chromosomes. 
B)  23 chromosomes. 
C)  just 22 pairs of autosomes plus one pair of sex chromosomes. 
D)  46 chromosomes and 23 chromosomes. 
E)  46 chromosomes, 23 chromosomes, and 22 pairs of autosomes plus one pair of sex chromosomes.

Question 18

When allowed to develop, the Müllerian ducts become the

Accepted Answer

A)  fallopian tubes, uterus, and upper vagina. 
B)  distal vagina, clitoris, and labia. 
C)  epididymis, vas deferens, and seminal vesicles. 
D)  penis and scrotum. 
E)  fallopian tubes, uterus, upper vagina, distal vagina, clitoris, and labia. 
A)  fallopian tubes, uterus, and upper vagina. 
B)  distal vagina, clitoris, and labia. 
C)  epididymis, vas deferens, and seminal vesicles. 
D)  penis and scrotum. 
E)  fallopian tubes, uterus, upper vagina, distal vagina, clitoris, and labia.

Question 19

X-linked genes are expressed

Accepted Answer

A)  more often in males. 
B)  more often in females. 
C)  at equal rates in the two genders. 
A)  more often in males. 
B)  more often in females. 
C)  at equal rates in the two genders.

Question 20

Sperm cannot fertilize an egg unless they have been in the female reproductive tract for several hours.This enhanced ability of the sperm to fertilize the ovum is called capacitation.In vitro studies indicate that sperm can be capacitated artificially if they are first washed in a solution of physiological saline supplemented with human serum.Based on this information, speculate on some possible changes that occur to sperm during capacitation, and suggest some possible factors involved in these changes.

Accepted Answer

Capacitation involves physiological chan

Exam 26: Reproduction and Development

A zygote with the genotype XO will

During gestation, powerful uterine contractions are suppressed by elevated levels of

Which of the following is responsible for driving the female libido?

Explain how modern birth control pills work as contraceptives.

Which of the following does not occur during labor?

The surge in LH that occurs during the middle of the ovarian cycle triggers

Which of the following is responsible for sweeping the ovulated egg toward the Fallopian tube and away from the abdominal cavity?

Which of the following is responsible for the development of the Wolffian duct into the epididymis, vas deferens, and seminal vesicle?

The embryo forms from the

In males, which cells are the primary targets for FSH? What effect does the hormone have on these cells?

Create a diagram explaining the feedback of estrogen on the anterior pituitary during the ovarian cycle.

What seems to be the most likely hormone that we could use as a male contraceptive pill? Explain.

Which form of contraception allows fertilization but prevents implantation?

Egg and sperm cells have

When allowed to develop, the Müllerian ducts become the

X-linked genes are expressed

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Cardiovascular Physiology

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

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