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Human Sexuality > Male Anatomy > Flashcards

Male Anatomy Flashcards

1
Q

External anatomy of the penis

A

Foreskin, glans, shaft, and root

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2
Q

Internal anatomy of the penis

A

Cavernous bodies (corpora cavernosa), spongy body (corpus
spongiosum), and penile urethra

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3
Q

Areas particularly responsive to stimulation in the penis

A

Corona: rim of penile glans
− Frenulum: highly sensitive thin strip of skin that connects the glans
to the shaft

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4
Q

Strengthening musculature around the penis

A

Kegel exercises can produce benefits

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5
Q

scrotum

A

Pouch of skin of external male genitals that encloses the testes

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6
Q

testis

A

male gonads that produce sperm and sex hormones

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7
Q

cryptorchidism

A

undescended testis

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8
Q

Seminiferous tubules

A

thin, coiled structures in the testes in which
sperm are produce

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9
Q

Epididymis

A

structure along the back of each testis in which sperm
maturation occurs

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10
Q

vas deferens

A

Sperm-carrying tube that begins at the testis and ends at the urethra
− Sperm held in the epididymis eventually drain into the vas
deferens

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11
Q

vasectomy

A

male sterilization procedure
− Involves removing a section from each vas deferens

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12
Q

seminal vesicles

A

− Small glands adjacent to terminals of vas deferens
 Secrete an alkaline fluid (conducive to sperm motility) that
constitutes the greatest portion of volume of seminal fluid
released during ejaculation (70%)

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13
Q

prostate gland

A

− Gland located at the base of the bladder
− Produces about 30% of the seminal fluid released during
ejaculation

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14
Q

Cowper’s glands

A

− Pea-sized glands located alongside the urethra base
− Secretes alkaline fluid during sexual arousal

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15
Q

Semen (seminal fluid)

A

Volume is about one teaspoon
− 100 to 500 million sperm per ejaculation

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16
Q

Erection

A

Coordinated by autonomic nervous system
− Arteries leading to the three erectile cylinders in the penis expand
− Blood outflow cannot keep up with inflow
* Capacity for erection is present at birth
− Common for infant boys

17
Q

Psychogenic and physiogenic erections

A

Inputs come simultaneously from both thoughts and physical
stimulation

18
Q

Spinal reflex triggers two phases

A

− Emission: fluid gathered in urethral bulb
− Expulsion: semen is expelled

19
Q

Retrograde ejaculation

A

Semen is expelled into the bladder

20
Q

Nocturnal emission

A

Involuntary ejaculation during sleep

21
Q

Concerns About Sexual Functioning

A

penis size
Genital retraction syndrome
Circumcision

22
Q

penis size

A

− Seen as a symbol of virility
− Implication that bigger is better
− Erect penises show less variation than flaccid
− Matter of subjective preference
− Difficult to get accurate estimate of average penis size
 Across studies, average erect penis just over 5 inches
− Phalloplasty: penile augmentation

23
Q

Genital retraction syndrome

A

− Culture-bound phenomenon
− Male believes his penis is shrinking and retracting into his body

24
Q

Circumcision

A

surgical removal of penis foreskin
− Pros: hygienic value and increased H IV protection
− Cons: possibility of unknown function, altered sexual function, and
trauma for newborn
− Rates of circumcisions vary widely around world
− American Academy of Pediatrics (A AP): moderate opposition
 Benefits slightly outweigh risks
 Data not significant to recommend routine procedure

25
Q

The penis: health-care issues

A

Cleanliness: smegma and infections
− Infection transmission: condom usage
− Injuries: hazards of sexual gadgets and fractures during coitus
− Penile cancer: deadly if not diagnosed early

26
Q

Testicular cancer

A

More common in young men (20 to 35 years old)
− Risk factors: smoking, family history, White race, and
cryptorchidism
− Symptoms: hard or irregular mass in testes, fever, groin ache,
heaviness in testis, tender breasts, painful fluid accumulation or
scrotum swelling
− Survival is greater than 90% if detected early

27
Q

Prostate diseases

A

− Prostatitis: enlarged and inflamed prostate
− Benign prostatic hyperplasia: increased prostate gland size
− Prostate cancer: second leading cause of cancer death
 Treatment options for prostate cancer: benefits must outweigh
risks

Human Sexuality (6 decks)

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