Question 1

Which of the following is NOT a way the body balances acids and bases?

Accepted Answer

Lymphatic buffers

Question 2

Which of the following allows the collecting duct to concentrate urine?

Accepted Answer

The osmolarity of the tissue around it is higher in the medulla than cortex.

Question 3

If you are dehydrated, your ADH levels __________ which causes your urine volume to __________, and your urine becomes __________ concentrated.

Accepted Answer

Increase; decrease; more

Question 4

Normal urine from a healthy person can be expected to contain all of the following except __________.

Accepted Answer

Glucose

Question 5

Which hormone is responsible for stimulating Leydig (interstitial) cells to produce testosterone?

Accepted Answer

Luteinizing hormone (LH)

Question 6

What is the primary function of the bulbourethral glands during sexual arousal?

Accepted Answer

To neutralize the acidity of residual urine in the urethra

Question 7

Which structure is responsible for sperm maturation and storage, and what happens to sperm that are not ejaculated?

Accepted Answer

Epididymis; they disintegrate and are reabsorbed

Question 8

During spermatogenesis, what is the correct sequence of cell development?

Accepted Answer

Spermatogonia → Primary spermatocyte → Secondary spermatocyte → Spermatid → Sperm

Question 9

Which of the following best explains why anabolic steroids cause shrinking of the testicles?

Accepted Answer

Disrupt the production of testosterone in the testicles.

Question 10

Which of the following is a secondary sex organ in males?

Accepted Answer

Penis

Question 11

What is the role of inhibin in the regulation of spermatogenesis?

Accepted Answer

Inhibits FSH, reducing response to testosterone

Question 12

Which component of semen is responsible for liquefying semen after ejaculation?

Accepted Answer

Serine protease from prostatic fluid

Question 13

A man with a sperm count lower than 25 million sperm/mL is most likely to experience which of the following?

Accepted Answer

Infertility

Question 14

Which muscle contracts to bring the testes closer to the body when cold?

Accepted Answer

Cremaster muscle

Question 15

Which hormone is released by the hypothalamus to initiate puberty?

Accepted Answer

Gonadotropin-releasing hormone (GnRH)

Question 16

Which region of the sperm contains the mitochondria that supply ATP for movement?

Accepted Answer

Midpiece

Question 17

Which of the following is a function of testosterone in males?

Accepted Answer

Stimulates production of sperm

Question 18

What is the effect of declining testosterone levels in aging men?

Accepted Answer

Rising FSH and LH levels

Question 19

Which equation best represents the formation of a zygote in sexual reproduction?

Accepted Answer

$$Egg + Sperm = Zygote$$

Question 20

Which of the following is NOT a short-term effect of anabolic steroid abuse?

Accepted Answer

Stroke

The Male Reproductive System: Structure, Function, and Regulation

Study Guide - Practice Questions