Chapter 4 - Male Sexual Anatomy and Physiology

Question 1

Corpora Cavernosa

Answer 1

Cylinders of spongy issue in the penis that become congested with blood and stiffen during arousal.

Question 2

Corpus Spongiosum

Answer 2

The spongy body that runs along the bottom of the penis, contains the penile urethra, and enlarges at the tip of the penis to form the glans.

Question 3

Corona

Answer 3

The ridge that separates the glans from the body of the penis.

Question 4

Frenulum

Answer 4

The sensitive strop of tissue that connects the underside of the penile glans to the shaft.

Question 5

Root

Answer 5

The base of the penis, which extends into the pelvis.

Question 6

Shaft

Answer 6

The body of the penis, which expands as a result of vasoconstriction.

Question 7

Foreskin

Answer 7

The look skin that covers the penile glans. Also referred to as the prepuce.

Question 8

Circumcision

Answer 8

Surgical removal of the foreskin of the penis.

Question 9

Phimosis

Answer 9

An abnormal condition in which the foreskin is so tight that it cannot be withdrawn from the glans.

Question 10

Scrotum

Answer 10

The pouch of loose skin that contains the testes.

Question 11

Spermatic Cord

Answer 11

The cord that suspends a testicle within the scrotum and contains a vas deferens, blood vessels, nerves, and the cremaster muscle.

Question 12

Vas Deferens

Answer 12

A tube that conducts sperm from the testicle to the ejaculatory duct of the penis.

Question 13

Cremaster Muscle

Answer 13

The muscle that raises and lowers the testicle in response to temperature changes and sexual stimulation.

Question 14

Dartos Muscle

Answer 14

The muscle in the middle later of the scrotum that contracts and relaxes in response to temperature changes.

Question 15

Germ Vell

Answer 15

A cell from which a new organism develops.

Question 16

Sperm

Answer 16

The male germ cell.

Question 17

Androgens

Answer 17

Male sex hormones.

Question 18

Testosterone

Answer 18

A male steroid sex hormone.

Question 19

Interstitial Cells

Answer 19

Cells that lie between the seminiferous tubules and secrete testosterone.

Question 20

Leydig’s Cells

Answer 20

Another term for interstitial cells.

Question 21

Secondary Sex Characteristics

Answer 21

Traits that distinguish the genders but are not directly involved in reproduction.

Question 22

Seminiferous Tubules

Answer 22

Tiny, winding, sperm-producing tubes within the lobes of the testes.

Question 23

Spermatogenesis

Answer 23

The process by which sperm cells are produced and developed.

Question 24

Spermatocyte

Answer 24

An early stage in the development of sperm cells, in which each parent cell has 46 chromosomes, including one X and one Y sex chromosome.

Question 25

Spermatids

Answer 25

Cells formed by the division of spermatocytes. Each spermatid has 23 chromosomes.

Question 26

Spermatozoa

Answer 26

Mature sperm cells.

Question 27

Epididymis

Answer 27

A tube that lies agains the back wall of each testicle and stores sperm.

Question 28

Vasectomy

Answer 28

Severing of the vas deferens, preventing sperm, from reaching the ejaculatory duct.

Question 29

Seminal Vesicles

Answer 29

Small glands that lie behind the bladder and secrete fluids that combine with sperm in the ejaculatory duct.

Question 30

Ejaculatory Duct

Answer 30

A Duct formed by the convergence of a vas deferens with a seminal vesicle through which sperm pass through the prostate gland and into the urethra.

Question 31

Cilia

Answer 31

Hairlike projections from cells that beat rhythmically to produce locomotion or currents.

Question 32

Cowper's Glands

Answer 32

Structures that lie below the prostate and empty their secretions into the urethra during sexual arousal.

Question 33

Bulbourethral Glands

Answer 33

Another term for Cowper's Glands.

Question 34

Prostate Glands

Answer 34

The gland that lies beneath the bladder and secretes prostatic fluid, which gives semen its characteristic odor and texture.

Question 35

Semen

Answer 35

The whitish fluid that constitutes the ejaculate, consisting of sperm and secretions from the seminal vesicles, prostate, and Cowper's glands.

Question 36

Urethritis

Answer 36

An inflammation of the bladder or urethra.

Question 37

Cryptorchidism

Answer 37

A condition in which one or two testicles fails to descend from the abdomen into the scrotum.

Question 38

Benign Prostatic Hyperplasia

Answer 38

Enlargement of the prostate due to hormonal changes of aging and symptomizes by urinary frequency, urinary urgency, and difficulty starting the flow of urine.

Question 39

Prostatitis

Answer 39

Inflammation of the prostate gland.

Question 40

Erection

Answer 40

Enlargement and stiffening of the penis caused by engorgement with blood.

Question 41

Performance Anxiety

Answer 41

Feelings of dread and foreboding experienced in connection with sexual activity (or any other activity that might be judged by another person).

Question 42

Sacrum

Answer 42

The thick, triangular bone located near the bottom of the spinal column.

Question 43

Autonomic Nervous System (ANS)

Answer 43

The division of the nervous system that regulates automatic bodily processes, such as heartbeat, pupal dilation, respiration, and digestion.

Question 44

Sympathetic

Answer 44

The branch of the ANS most active during emotional responses that spend energy, such as fear and anxiety. The sympathetic ANS largely controls ejaculation.

Question 45

Parasympathetic

Answer 45

The branch of the ANS most active during processes that restore energy, like digestion. The parasympathetic ANS largely controls erection.

Question 46

Peyronie's Disease

Answer 46

Excessive curvature of the penis that can make erections painful.

Question 47

Orgasm

Answer 47

The climax of sexual excitement.

Question 48

Paraplegic

Answer 48

A person with sensory and motor paralysis of the lower half of the body.

Question 49

Emission Stage

Answer 49

The first phase of ejaculation, which involves contractions of the prostate gland, seminal vesicles, and the upper part of the vas deferens.

Question 50

Ampulla

Answer 50

A sac of dilated part of a tube or canal.

Question 51

Urethral Bulb

Answer 51

The small tube that makes up the pros static part of the urethral tract and balloons out as muscles close at either end, trapping semen prior to ejaculation.

Question 52

Expulsion Stage

Answer 52

The second stage of ejaculation, during which muscles at the base of the penis and elsewhere contract rhythmically, forcefully expelling semen and providing pleasurable sensations.

Question 53

Retrograde Ejaculation

Answer 53

Ejaculation in which the ejaculate empties into the bladder.

Question 54

_____ is characterized by prolonged erection.

Answer 54

Priapism

Question 55

During the emission stage of ejaculation, semen is propelled into the ______.

Answer 55

urethral bulb

Question 56

Both male and females have ______.

Answer 56

corpora cavernosum

Question 57

Male circumcision removes the _____.

Answer 57

prepuce

Question 58

Scrotal temperature tends to be ______ body temperature.

Answer 58

5 to 6 degrees Fahrenheit lower than

Question 59

_______ stimulates secretion of testosterone by interstitial cells.

Answer 59

Luteinizing hormone

Question 60

________ nano grams of prostate specific antigen per milliliter of blood are considered normal.

Answer 60

Under 4

Question 61

Both semen and urine pass through the ______.

Answer 61

urethral meatus

Question 62

Men have erections every ________ minutes of so while they sleep.

Answer 62

90

Question 63

The human penis contains ________.

Answer 63

corpora cavernosa