Ch. 5 test questions

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Following the initiation of spermatogenesis in males during puberty, how long before mature sperm are ejaculated?

1 - 1.5 months

According to the American Cancer Society, how many men will be diagnosed with prostate cancer in their lifetime?

1 in 6

Each year after age 40, hormone levels in men decrease by about

1%

Spermatogenesis usually begins around age

12

A male is likely to be infertile if he has less than

20 million sperm per milliliter

How many sperm does the average human male produce per day?

300 million

During orgasm, how many contractions do most men experience?

5 to 15

Why are many deaths from prostate cancer preventable?

A simple rectal exam can catch at least half of all prostate cancers at the curable stage.

What is priapism?

An abnormally prolonged and painful erection that is not associated with sexual desire or excitement

What causes a penile erection?

Blood flows and becomes trapped in the penis.

For the treatment of erectile dysfunction, how do drugs like Viagra work?

By increasing blood glow to and inhibiting blood loss from the penis

Why may anabolic-androgenic steroid use in young athletes lead to a permanently shortened stature?

Causes early fusion of growth plates

The cremaster muscle serves what function?

Facilitates sperm viability by regulating the scrotum's distance from the body

What is balanitis?

Inflammation of the glans penis

What is true of the consistency of semen following its ejaculation into the vagina?

It is first a thick fluid, which eventually thins out.

What is true of benign prostatic hypertrophy?

It may impede urination due to compression of the urethra.

At the onset of puberty, what leads to an increase in testosterone production?

Luteinizing hormone is circulated through the blood.

Which of the following is true regarding the process of human spermatogenesis?

Mature sperm can be stored for several months.

Why is there often a delay in seeking medical treatment for penile cancer?

Men feel fear and embarrassment over the issue.

What causes the ejaculate to be propelled from the penis?

Muscles at the base of the penis squeeze the urethral bulb.

What is Peyronie's disease?

Painful curvature of the penis

Painful curvature of the penis is referred to as

Peyronie's disease

What temperature is ideal for sperm survival?

Slightly lower than body temperature

Which of the following best describes the sperm's ability to reach the ovum?

Sperm work together to achieve fertilization

What is true of the ejaculate?

The majority of the ejaculate is nutrient rich fluid.

Which of the following is one of the most important recent advances in the area of prostate cancer?

The prostate specific antigen test

What changes to males encounter as puberty progresses?

The skin becomes tougher.

Why does one testicle tend to hang lower than the other?

This prevents the testicles from crushing one another.

Why should a testicular self-examination be performed while taking a warm shower?

To relax scrotum

What is testicular torsion?

Twisting of the testis on its spermatic cord

What is cryptorchidism?

Undescended testes

Male anxiety about penis size is the result of several factors including: pornographic films; other men overestimating their penis size; and

a male's overhead visual perspective

The male equivalent to menopause is

andropause

Which of the following is the term for inflammation of the glans penis?

balantis

Sperm production is halted when the scrotum

becomes too hot

A natural occurrence in which the prostate enlarges as men age is referred to as

benign prostatic hypertrophy

What is a recommended treatment for phimosis?

circumcision

During the last few decades, the incidence of testicular cancer has

continuously increased

The glans penis is made up of the

corona, frenulum, and meatus

Penile erection is facilitated by the corpora cavernosa and the

corpus spongiosum

The medical term for undescended testes is

cryptorchidism

Which of the following is the most common genital disorder in boys?

cryptorchidism

The two organs involved in spermatogenesis are the testes and the

epididymis

During an erection, nerve fibers swell the veins of the penis.

false

Human sperm formation requires approximately 32 days and that can be stored for several months

false

Which hormone, released from the hypothalamus, initiates puberty in males?

gonadotropin-releasing hormone

When testosterone levels become too high in the blood

gonadotropin-releasing hormone levels drop

A negative feedback system regulates hormone production: when the concentration of testosterone in the blood increases to a certain level, gonadotropin-releasing hormone from the hypothalamus is

inhibited

During spermatogenesis, as sperm cells develop into haploid sperm cells in the seminiferous tubules, they move from the

lining toward the center

Anabolic-androgenic steroid use can cause damage to the

liver

The glans penis is made up of the corona, the frenulum, and the

meatus

Testicular self-examinations should be performed at least

monthly

When the concentration of testosterone in the blood increases to a certain level, gonadotropin-releasing hormone release from the hypothalamus is inhibited. This is an example of a

negative feedback system

The majority of the ejaculate is made up of

nutrient rich fluid

As men age, decreasing levels of testosterone increases the risk of

osteoporosis

Most men first develop testicular cancer as a

painless testicular mass

Injury to the corpora cavernosa may hinder

penile erection

An abnormal restriction of the foreskin that inhibits the ability to uncover the glans penis is known as

phimosis

An abnormally prolonged and painful erection that is not associated with sexual desire or excitement is referred to as

priapism

Aside from skin cancer, which of the following is the most frequently diagnosed cancer in men?

prostate cancer

What are the three glands involved in ejaculation?

prostate, Cowper's, seminal vesicles

Cancer of the penis is

rare

The male external sex organs are the penis and the

scrotum

In what microscopic network does spermatogenesis take place?

seminiferous tubules

Regular washing and drying of the penis helps reduce the buildup of which substance?

smegma

Which structure is part of the male internal reproductive system?

testes

What organs are involved in spermatogenesis?

testes and epididymis

The only early detection system for testicular cancer is

testicular self-examination

Twisting of a testis on its spermatic cord is referred to as

testicular torsion

Which two hormones directly regulate sperm production?

testosterone and luteinizing hormone

What organ is involved in the ejaculatory pathway?

vas deferens

Which structure is part of the male internal reproductive system?

vas deferens


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