Chapter 4 - Male Sexual Anatomy and Physiology Flashcards Preview

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Flashcards in Chapter 4 - Male Sexual Anatomy and Physiology Deck (63):
1

Corpora Cavernosa

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

2

Corpus Spongiosum

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.

3

Corona

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

4

Frenulum

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

5

Root

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

6

Shaft

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

7

Foreskin

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

8

Circumcision

Surgical removal of the foreskin of the penis.

9

Phimosis

An abnormal condition in which the foreskin is so tight that it cannot be withdrawn from the glans.

10

Scrotum

The pouch of loose skin that contains the testes.

11

Spermatic Cord

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

12

Vas Deferens

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

13

Cremaster Muscle

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

14

Dartos Muscle

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

15

Germ Vell

A cell from which a new organism develops.

16

Sperm

The male germ cell.

17

Androgens

Male sex hormones.

18

Testosterone

A male steroid sex hormone.

19

Interstitial Cells

Cells that lie between the seminiferous tubules and secrete testosterone.

20

Leydig's Cells

Another term for interstitial cells.

21

Secondary Sex Characteristics

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

22

Seminiferous Tubules

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

23

Spermatogenesis

The process by which sperm cells are produced and developed.

24

Spermatocyte

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.

25

Spermatids

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

26

Spermatozoa

Mature sperm cells.

27

Epididymis

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

28

Vasectomy

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

29

Seminal Vesicles

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

30

Ejaculatory Duct

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.

31

Cilia

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

32

Cowper's Glands

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

33

Bulbourethral Glands

Another term for Cowper's Glands.

34

Prostate Glands

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

35

Semen

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

36

Urethritis

An inflammation of the bladder or urethra.

37

Cryptorchidism

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

38

Benign Prostatic Hyperplasia

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

39

Prostatitis

Inflammation of the prostate gland.

40

Erection

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

41

Performance Anxiety

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

42

Sacrum

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

43

Autonomic Nervous System (ANS)

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

44

Sympathetic

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

45

Parasympathetic

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

46

Peyronie's Disease

Excessive curvature of the penis that can make erections painful.

47

Orgasm

The climax of sexual excitement.

48

Paraplegic

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

49

Emission Stage

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

50

Ampulla

A sac of dilated part of a tube or canal.

51

Urethral Bulb

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.

52

Expulsion Stage

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.

53

Retrograde Ejaculation

Ejaculation in which the ejaculate empties into the bladder.

54

_____ is characterized by prolonged erection.

Priapism

55

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

urethral bulb

56

Both male and females have ______.

corpora cavernosum

57

Male circumcision removes the _____.

prepuce

58

Scrotal temperature tends to be ______ body temperature.

5 to 6 degrees Fahrenheit lower than

59

_______ stimulates secretion of testosterone by interstitial cells.

Luteinizing hormone

60

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

Under 4

61

Both semen and urine pass through the ______.

urethral meatus

62

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

90

63

The human penis contains ________.

corpora cavernosa