Тест: Human Reproductive Anatomy and Function — 9 въпроса

1. What is the external male reproductive structure that facilitates sexual intercourse, urination, and ejaculation?

A. Penis

B. Testes

C. Prostate gland

D. Vas deferens

Answer: (A)

Обяснение

The penis is the external male reproductive organ responsible for sexual intercourse, urination, and ejaculation. It contains erectile tissue that fills with blood during an erection. The testes are internal organs located within the scrotum, responsible for sperm production and hormone secretion. The prostate gland is an internal gland that contributes fluid to semen. The vas deferens is a duct that transports sperm from the testes to the urethra but is not an external structure.

2. What is the primary function of the scrotum in the male reproductive system?

A. To produce sperm and secrete testosterone

B. To regulate the temperature of the testes for optimal sperm production

C. To store mature sperm until ejaculation

D. To lubricate the penis during sexual activity

Answer: (B)

Обяснение

The scrotum's main role is to regulate the temperature of the testes, maintaining it around 34-35°C, which is essential for healthy spermatogenesis.

3. How many testes do males typically have?

A. One

B. Two

C. Three

D. Four

Answer: (B)

Обяснение

Males typically have two testes, which are paired organs responsible for sperm production and hormone secretion. The other options are incorrect: most males do not have only one, three, or four testes.

4. Which gland contributes approximately 60% of semen volume and supplies energy for sperm?

A. Prostate gland

B. Seminal vesicles

C. Bulbourethral glands

D. Epididymis

Answer: (B)

Обяснение

The seminal vesicles produce a fructose-rich fluid that makes up about 60% of semen and provides energy for sperm motility.

5. What is the primary role of female external structures such as the vulva, labia, and clitoris?

A. To facilitate childbirth by providing structural support to internal organs

B. To regulate the menstrual cycle through hormonal feedback

C. To protect internal reproductive organs, provide sensation, and facilitate sexual arousal

D. To produce hormones like estrogen and progesterone

Answer: (C)

Обяснение

Female external structures, including the vulva, labia, and clitoris, primarily serve to protect internal reproductive organs, provide sensory input, and facilitate sexual arousal. They do not directly produce hormones or regulate the menstrual cycle, which are functions of internal reproductive organs like the ovaries and the endocrine system.

6. What structures comprise the cylindrical bodies within the penis?

A. Corpus cavernosum and corpus spongiosum

B. Epididymis and vas deferens

C. Seminal vesicles and prostate gland

D. Foreskin and glans penis

Answer: (A)

Обяснение

The penis contains two corpora cavernosa and one corpus spongiosum, which are cylindrical bodies made of erectile tissue.

7. Which external structure covers the glans penis in uncircumcised males?

A. Foreskin (prepuce)

B. Scrotum

C. Urethra

D. Prepuce muscle

Answer: (A)

Обяснение

The foreskin, or prepuce, is a fold of skin that covers the glans penis in uncircumcised males.

8. Where are sperm stored and matured before ejaculation?

A. Vas deferens

B. Epididymis

C. Seminal vesicles

D. Prostate gland

Answer: (B)

Обяснение

The epididymis is the coiled tube where sperm mature and are stored temporarily before ejaculation.

9. Which internal male reproductive gland secretes a milky fluid that aids in sperm motility and surrounds the urethra below the bladder?

A. Seminal vesicles

B. Prostate gland

C. Bulbourethral glands

D. Epididymis

Answer: (B)

Обяснение

The prostate gland secretes a milky fluid that nourishes sperm and is located encircling the urethra below the bladder.