Question 1

Which of the following best describes the primary function of the reproductive system as illustrated in the first image (sperm meeting egg)?

Accepted Answer

To pass genetic material to the next generation through the union of gametes

Question 2

Based on the cross-section of the testis shown in the second image, which cell type is responsible for producing testosterone?

Accepted Answer

Interstitial (Leydig) cells

Question 3

Which structure in the male reproductive tract, as shown in the third image, is responsible for storing sperm and allowing them to mature?

Accepted Answer

Epididymis

Question 4

Which gland, labeled in the fourth image, produces a secretion that contains fructose to nourish sperm?

Accepted Answer

Seminal vesicle

Question 5

The penis, as shown in the fifth image, contains erectile tissue. What is the primary function of this tissue during reproduction?

Accepted Answer

To facilitate the introduction of sperm into the female reproductive tract

Question 6

Referencing the sixth image, which hormone is released by the hypothalamus to initiate the hypothalamic-pituitary-gonadal (HPG) axis?

Accepted Answer

Gonadotropin-releasing hormone (GnRH)

Question 7

In the HPG axis (seventh image), what is the effect of inhibin released from the testes?

Accepted Answer

It suppresses FSH secretion by the anterior pituitary

Question 8

Which of the following best describes the negative feedback mechanism shown in the HPG axis diagrams (images 6-9)?

Accepted Answer

Testosterone and inhibin inhibit the hypothalamus and anterior pituitary to regulate hormone levels

Question 9

A patient presents with low sperm count and high FSH levels. Based on the HPG axis, which hormone is most likely deficient?

Accepted Answer

Inhibin

Question 10

Which of the following is a correct sequence of sperm transport through the male reproductive tract, as shown in the third image?

Accepted Answer

Seminiferous tubules → epididymis → vas deferens → ejaculatory duct → urethra

Question 11

Which hormone is primarily responsible for stimulating spermatogenesis in the testes?

Accepted Answer

Follicle stimulating hormone (FSH)

Question 12

If the anterior pituitary gland is damaged and cannot release LH, what is the most likely consequence for the male reproductive system?

Accepted Answer

Decreased testosterone production by interstitial cells

Question 13

Which of the following best explains why the vagina is acidic?

Accepted Answer

To protect against bacterial infections

Question 14

During the ovarian cycle, what is the primary function of the corpus luteum?

Accepted Answer

To produce estrogen and progesterone

Question 15

Which phase of the menstrual cycle is characterized by the rebuilding of the endometrial tissue?

Accepted Answer

Proliferative phase

Question 16

If fertilization and implantation occur, which hormone produced by the embryo maintains the corpus luteum?

Accepted Answer

Human chorionic gonadotropin (hCG)

Question 17

Which of the following best describes the effect of high levels of estrogen on the anterior pituitary during the late follicular phase?

Accepted Answer

It triggers a surge in LH secretion

Question 18

A patient has a mutation that prevents the production of androgen binding protein (ABP) in the testes. What is the most likely consequence?

Accepted Answer

Reduced testosterone action in the testes and impaired spermatogenesis

Question 19

Which of the following is a function of the uterine tubes (fallopian tubes)?

Accepted Answer

To transport the oocyte toward the uterus

Question 20

Which layer of the uterine wall is shed during menstruation?

Accepted Answer

Endometrium

The Human Reproductive System: Structure, Function, and Regulation

Study Guide - Practice Questions