Q: Which equation best represents the hormonal feedback loop regulating testosterone production in males?

$$\text{Hypothalamus} \xrightarrow{\text{GnRH}} \text{Pituitary} \xrightarrow{\text{LH}} \text{Testes} \xrightarrow{\text{Testosterone}} \text{Negative feedback}$$

Q: A patient with Addison's disease has decreased production of adrenal cortex hormones. Which formula best represents the effect on blood pressure?

$$\text{Low aldosterone} \rightarrow \text{Decreased Na^+ reabsorption} \rightarrow \text{Decreased blood volume} \rightarrow \text{Decreased blood pressure}$$

Question 1

Which structure in the male reproductive system is responsible for the production of sperm and testosterone?

Accepted Answer

Testes

Question 2

During oogenesis, which stage is arrested until puberty in human females?

Accepted Answer

Primary oocyte

Question 3

Which hormone is primarily responsible for stimulating spermatogenesis in males?

Accepted Answer

Follicle-stimulating hormone (FSH)

Question 4

A patient presents with a sexually transmitted disease characterized by painful urination and a purulent discharge. Which organism is most likely responsible?

Accepted Answer

Neisseria gonorrhoeae

Question 5

Which step in fertilization involves the release of enzymes from the sperm to digest the zona pellucida?

Accepted Answer

Acrosomal reaction

Question 6

The three germ layers formed during embryonic development are ectoderm, mesoderm, and endoderm. Which layer gives rise to the nervous system?

Accepted Answer

Ectoderm

Question 7

Which primitive organ is formed by endodermal differentiation during embryonic development?

Accepted Answer

Liver

Question 8

How does fetal circulation differ from newborn circulation immediately after birth?

Accepted Answer

The foramen ovale closes in newborns

Question 9

During pregnancy, which hormone is responsible for maintaining the corpus luteum and preventing menstruation?

Accepted Answer

Human chorionic gonadotropin (hCG)

Question 10

A pregnant woman experiences increased cardiac output and blood volume. Which physiological change is most likely responsible for these effects?

Accepted Answer

Increased estrogen and progesterone levels

Question 11

Which hormone is produced by the anterior pituitary and stimulates the adrenal cortex to release corticosteroids?

Accepted Answer

Adrenocorticotropic hormone (ACTH)

Question 12

Which hormone released from the posterior pituitary increases water reabsorption in the kidneys?

Accepted Answer

Antidiuretic hormone (ADH)

Question 13

Which adrenal gland hormone is responsible for the 'fight or flight' response?

Accepted Answer

Epinephrine

Question 14

A patient with a deficiency in FSH would most likely experience which of the following?

Accepted Answer

Impaired sperm production

Question 15

If a sperm cell contains 23 chromosomes, what is the chromosome number in a primary spermatocyte?

Accepted Answer

$$46$$

Question 16

Which equation best represents the hormonal feedback loop regulating testosterone production in males?

Accepted Answer

$$	ext{Hypothalamus} \xrightarrow{	ext{GnRH}} 	ext{Pituitary} \xrightarrow{	ext{LH}} 	ext{Testes} \xrightarrow{	ext{Testosterone}} 	ext{Negative feedback}$$

Question 17

A newborn is found to have a patent ductus arteriosus. What is the physiological consequence of this condition?

Accepted Answer

Decreased oxygenation of systemic blood

Question 18

Which hormone produced by the adrenal cortex regulates sodium and potassium balance?

Accepted Answer

Aldosterone

Question 19

During the fetal period, which event marks the transition from embryonic to fetal development?

Accepted Answer

Completion of organogenesis

Question 20

A patient with Addison's disease has decreased production of adrenal cortex hormones. Which formula best represents the effect on blood pressure?

Accepted Answer

$$	ext{Low aldosterone} ightarrow 	ext{Decreased Na^+ reabsorption} ightarrow 	ext{Decreased blood volume} ightarrow 	ext{Decreased blood pressure}$$

BIO 202: Reproductive System, Pregnancy & Human Development, and Endocrine System Study Guide

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