Question 1

Orgasm is very similar in males and females with the exception of no ejaculation in females.

Accepted Answer

The answer of Orgasm is very similar in males and...

Question 2

Erection is a vascular phenomenon that involves decreased sympathetic and increased parasympathetic activity to the penile arterioles, resulting in arteriolar vasodilation and filling of the erectile tissue with blood.

Accepted Answer

This is a correct description of the physiological mechanism of erection.

Question 3

A surge in LH halts estrogen synthesis.

Accepted Answer

The answer of A surge in LH halts estrogen synthesis....

Question 4

Prostaglandins are secreted into the semen by the prostate gland.

Accepted Answer

The answer of Prostaglandins are secreted into the semen by...

Question 5

During ejaculation, the sphincter at the neck of the bladder is opened to permit entry of sperm into the urethra.

Accepted Answer

During ejaculation, the sphincter at the neck of the bladder is closed to prevent urine from mixing with semen and to ensure that sperm is directed into the urethra.

Question 6

The prostate gland provides fructose to be utilized by the sperm for energy.

Accepted Answer

The answer of The prostate gland provides fructose to be...

Question 7

Prostaglandins are found only in the semen.

Accepted Answer

Prostaglandins are not found only in semen. They are present in various tissues throughout the body and play important roles in the regulation of inflammation, blood flow, and other physiological processes.

Question 8

During the ovarian cycle, the corpus luteum becomes a follicle.

Accepted Answer

During the ovarian cycle, the follicle develops into a corpus luteum, not the other way around.

Question 9

The seminal vesicles store sperm prior to ejaculation.

Accepted Answer

The seminal vesicles produce and secrete a fluid that is added to sperm during ejaculation to create semen, but they do not store sperm. Sperm is stored in the epididymis.

Question 10

The endometrium is the layer of smooth muscles of the uterus.

Accepted Answer

The endometrium is actually the inner lining of the uterus, which is made up of glandular and vascular tissue. The smooth muscle layer of the uterus is called the myometrium.

Question 11

Erection and ejaculation are both spinal reflexes.

Accepted Answer

Erection and ejaculation are both controlled by spinal reflex arcs, which can be activated automatically by sensory stimulation.

Question 12

Although discovered in the semen, prostaglandins are ubiquitous, locally-acting chemical messengers that exert widespread effects throughout the body.

Accepted Answer

Prostaglandins are not limited to semen and are present throughout the body. They play important roles in various physiological processes such as inflammation, immune response, and blood clotting.

Question 13

During ejaculation, the sphincter at the neck of the bladder reflexively opens to allow semen to enter the urethra.

Accepted Answer

The answer of During ejaculation, the sphincter at the neck...

Question 14

Ejaculation is a two-part reflex involving (1) contraction of the smooth muscle of the reproductive tract and accessory sex organs (emission), and (2) contraction of the skeletal muscles at the base of the penis (expulsion).

Accepted Answer

This accurately describes the two-part reflex of ejaculation.

Question 15

In a sexually mature individual, pulses of GnRH are secreted once a day.

Accepted Answer

In a sexually mature individual, pulses of GnRH are secreted multiple times a day, typically every 1-3 hours.

Question 16

Ovarian estrogen production decreases during climacteric.

Accepted Answer

During climacteric, ovarian function declines and the production of estrogen decreases.

Question 17

The fimbriae are the dilated portion of the uterus.

Accepted Answer

The fimbriae are actually small, finger-like protrusions at the end of the fallopian tubes, not the uterus.

Question 18

Vasectomy invariably results in a decrease in testosterone secretion.

Accepted Answer

Vasectomy does not affect the production or secretion of testosterone as it only involves the blocking of the vas deferens, which carries sperm from the testes to mix with semen. Testosterone is produced in the testes and is not affected by vasectomy.

Question 19

Erection can occur only upon stimulation of the mechanoreceptors in the glans penis.

Accepted Answer

Erection can occur upon stimulation of both mechanoreceptors and other sensory receptors such as visual, auditory, and olfactory stimuli.

Question 20

At puberty, the hypothalamus becomes more sensitive to feedback inhibition by testosterone.

Accepted Answer

The answer of At puberty, the hypothalamus becomes more sensitive...

Quiz 20: A--The Reproductive System