Ch. 5 test questions
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
