Biology: Male Reproductive System and Gamete Formation

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What is the total number of chromosomes in a sperm cell and an oocyte after they combine?

92
46 (correct)
69
23

What is the primary function of the dartos and cremaster muscles?

To produce sperm
To facilitate the release of sperm
To create the blood-testes barrier
To regulate the temperature of the testes (correct)

What is the purpose of the tunica albuginea?

To create the blood-testes barrier
To separate the testes into lobules (correct)
To regulate the temperature of the testes
To control sperm production

How many cell types are present in the seminiferous tubules?

6 (B) Signup and view all the answers

What is the function of Sertoli cells?

To control sperm production and regulate germ cell fate (B) Signup and view all the answers

Why is the blood-testes barrier important?

To prevent autoimmune responses (A) Signup and view all the answers

What is the approximate length of an ovarian cycle?

28 days (B) Signup and view all the answers

What is the function of the tunica albuginea?

It covers the ovaries (B) Signup and view all the answers

What happens to oocytes during fetal development?

They form primary oocytes in the fetal ovary (D) Signup and view all the answers

What is the result of atresia in follicles?

Death of multiple follicles (A) Signup and view all the answers

What stimulates follicle growth?

FSH (B) Signup and view all the answers

What is the function of cilia in the uterine tubes?

To create a current to push the oocyte along (C) Signup and view all the answers

What happens to the corpus luteum after ovulation?

It produces progesterone (B) Signup and view all the answers

What is the result of high levels of estrogen in the uterine tubes?

Contraction of the uterine tubes (C) Signup and view all the answers

What phase of the menstrual cycle is characterized by low levels of progesterone, FSH, and LH?

Menses phase (D) Signup and view all the answers

What is the function of the superficial layer of the uterus?

It is released during menses (A) Signup and view all the answers

What triggers the shedding of the endometrium?

The decrease of progesterone levels (D) Signup and view all the answers

What is the primary function of the breasts in the reproductive system?

To provide milk or colostrum through lactation (C) Signup and view all the answers

Why do hormonal birth control pills prevent menses?

They provide a constant amount of estrogen and progesterone (A) Signup and view all the answers

What is the primary factor that determines the development of the male reproductive system?

The presence of the Y chromosome (D) Signup and view all the answers

What is the effect of poor nutrition on puberty?

It has a more pronounced effect on puberty in females (D) Signup and view all the answers

What is the typical age range for the growth spurt in males?

11-13 years old (B) Signup and view all the answers

What is the term for one or both testes failing to descend into the scrotum prior to birth?

Cryptorchidism (C) Signup and view all the answers

What percentage of semen is made up of sperm?

5% (A) Signup and view all the answers

What hormone regulates testosterone production?

Gonadotropin releasing hormone (D) Signup and view all the answers

What is the purpose of the epididymis?

To mature sperm cells (B) Signup and view all the answers

What is the function of the mitochondria in the mid piece of the sperm cell?

To produce ATP (B) Signup and view all the answers

What is the purpose of the prostate gland?

To add fluid to coagulate semen (C) Signup and view all the answers

What is the term for the process by which sperm cells develop?

Spermatogenesis (C) Signup and view all the answers

What is the name of the glands that release fluid to lubricate and clean away urine residue during ejaculation?

Bulbourethral glands (A) Signup and view all the answers

What is the term for the internal male reproductive organs?

Testes (B) Signup and view all the answers

What is the function of Nitric Oxide in the penis?

To relax muscles and allow blood to flow (A) Signup and view all the answers