Q: Which equation best represents the chromosomal contribution from each parent during fertilization?

$46 = 23_{\text{mother}} + 23_{\text{father}}$

Q: Which equation describes the process of meiosis in oogenesis, resulting in the formation of a secondary oocyte and a polar body?

$1 \text{ primary oocyte} \xrightarrow{\text{Meiosis I}} 1 \text{ secondary oocyte} + 1 \text{ polar body}$

Q: Which equation best represents the negative feedback regulation of FSH by inhibin in males?

$\text{Increased inhibin} \rightarrow \text{Decreased FSH}$

Question 1

Which hormone is primarily responsible for stimulating the production of testosterone in the interstitial cells of the testes?

Accepted Answer

Luteinizing Hormone (LH)

Question 2

During spermatogenesis, how many functional sperm cells are produced from one primary spermatocyte after both meiotic divisions?

Accepted Answer

Four

Question 3

Which structure in the male reproductive system stores sperm for several months and resorbs those not ejaculated?

Accepted Answer

Epididymis

Question 4

A patient presents with a mutation in the androgen receptor, resulting in the inability to respond to testosterone. Which syndrome does this describe, and what is a key clinical feature?

Accepted Answer

Androgen Insensitivity Syndrome; female external genitalia with undescended testes

Question 5

Which layer of the uterus is shed during menstruation, and what is its primary function?

Accepted Answer

Endometrium (functional zone); nourishes the implanted embryo

Question 6

If a fertilized egg implants outside the uterus, what is this condition called, and what is a common site for implantation?

Accepted Answer

Ectopic pregnancy; uterine tube (fallopian tube)

Question 7

Which hormone is secreted by the corpus luteum to maintain the endometrial lining during early pregnancy?

Accepted Answer

Progesterone

Question 8

A 25-year-old woman has regular menstrual cycles but experiences amenorrhea after significant weight loss. Which hormone is most likely decreased, leading to cessation of menstruation?

Accepted Answer

Leptin

Question 9

Which equation best represents the chromosomal contribution from each parent during fertilization?

Accepted Answer

$46 = 23_{	ext{mother}} + 23_{	ext{father}}$

Question 10

Which process describes the maturation of spermatids into spermatozoa, and what cellular structure is critical for motility?

Accepted Answer

Spermiogenesis; flagellum

Question 11

During the proliferative phase of the uterine cycle, which hormone is primarily responsible for the regeneration of the endometrial functional zone?

Accepted Answer

Estrogen

Question 12

Which extraembryonic membrane is primarily responsible for forming the blood vessels that connect the embryo to the placenta?

Accepted Answer

Chorion

Question 13

A male patient has low sperm count and decreased testosterone levels. Which hormone would you expect to be elevated due to lack of negative feedback?

Accepted Answer

Luteinizing hormone (LH)

Question 14

Which equation describes the process of meiosis in oogenesis, resulting in the formation of a secondary oocyte and a polar body?

Accepted Answer

$1 	ext{ primary oocyte} \xrightarrow{	ext{Meiosis I}} 1 	ext{ secondary oocyte} + 1 	ext{ polar body}$

Question 15

Which hormone is released by the anterior pituitary and stimulates the development of ovarian follicles in females?

Accepted Answer

Follicle Stimulating Hormone (FSH)

Question 16

Which physiological change occurs in the mother during the third trimester to support fetal development?

Accepted Answer

Increase in respiratory rate and glomerular filtration rate (GFR)

Question 17

Which hormone is responsible for the let-down reflex during lactation, and what triggers its release?

Accepted Answer

Oxytocin; suckling

Question 18

Which equation best represents the negative feedback regulation of FSH by inhibin in males?

Accepted Answer

$	ext{Increased inhibin} ightarrow 	ext{Decreased FSH}$

Question 19

Which event marks the beginning of true labor, and what is the physiological consequence?

Accepted Answer

Rupture of the amniochorionic membrane; onset of regular uterine contractions

Anatomy & Physiology: The Human Reproductive System

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