Male Reproductive System

Question 1

Testes

Answer 1

an organ which produces spermatozoa (male reproductive cells).

Question 2

seminiferous tubule

Answer 2

located within the testicles, and are the specific location of meiosis, and the subsequent creation of male gametes

Question 3

interstitial cells

Answer 3

-Lying in the soft connective tissue surrounding the seminiferous tubules
-functionally distinct cells that produce androgens—the most important of which
is testosterone.

Question 4

Rete testis

Answer 4

Seminiferous t bules of each lobule empty sperm into another set of tubules
-located to one side of the testis

Question 5

epididymis

Answer 5

first part of the male duct system and provides a temporary storage site for the immature sperm

Question 6

vasectomy

Answer 6

n this relatively minor operation, the surgeon makes a small incision into the scrotum and then cuts through and ties off the ductus deferens. Sperm are still produced, but they can no longer reach the body exterior, and eventually they deteriorate and are phagocytized

Question 7

Urethra

Answer 7

extends from the base of the urinary bladder to the tip of the penis,

Question 8

Three named regions of urethra

Answer 8

prostatic urethra
Membranous urethra
prostatic urethra

Question 9

Function of urethra

Answer 9

male urethra carries both urine and sperm to the body exterior; thus, it serves two masters, the urinary and reproductive systems

Question 10

two major functions of the testes

Answer 10

1. have both an exocrine (sperm-producing) function and an endocrine (testosterone-producing) function.
2. The accessory reproductive structures are ducts or glands that aid in the delivery of sperm to the body exterior or to the female reproductive tract.

Question 11

organs of the male duct system, in order, from the scrotum to the body exterior

Answer 11

the epididymis, ductus deferens, and urethra

Question 12

Accessory Glands

Answer 12

Seminal Vesicles
Prostate
Bulbourethral Glands
-These glands produce the bulk of semen

Question 13

Semen

Answer 13

the sperm-containing fluid that is propelled out of the male’s reproductive tract during ejaculation.

Question 14

Seminal Vesicles

Answer 14

These large hollow glands, produce about 60 percent of seminal fluid, the fluid portion of semen.
Their thick, yellowish secretion is rich in sugar (fructose), vitamin C, prostaglandins, and other substances that nourish and activate the sperm passing through the tract.

Question 15

Prostate

Answer 15

Prostate fluid is milky and plays a role in activating sperm

Question 16

How might hypertrophy of the prostate lead to urinary system problems?

Answer 16

This troublesome condition makes urination difficult and enhances the risk of bladder infections (cystitis) and kidney damage.

Question 17

Bulbourethral Glands

Answer 17

1. They produce a thick, clear mucus that drains into the penile urethra
2. t cleanses the urethra of trace acidic urine prior to ejaculation, and it serves as a lubricant during sexual intercourse

Question 18

Importance of semen

Answer 18

-The liquid portion acts as a transport medium for nutrients and chemicals that protect the sperm and aid their movement
-Semen also contains antibiotic chemicals that destroy certain bacteria, the hormone relaxin, enzymes that enhance sperm motility, and substances that inhibit an immune response in the female reproductive tract.
-relative alkalinity of semen as a whole(ph 7.5 to 7.2) helps neutralize the acidic environment (pH 3.5–4) of the female’s vagina, protecting the delicate sperm.

Question 19

Male infertility

Answer 19

the inability to conceive a child, may be due to obstructions of the duct system, hormonal imbalances, environmental estrogens, pesticides, excessive alcohol, or many other factors

Question 20

Semen analysis

Answer 20

-One of the first series of tests done when a couple has been unable to conceive
-Factors analyzed include sperm count, motility and morphology (shape and maturity), and semen volume, pH, and fructose content.

Question 21

male external genitalia

Answer 21

-scrotum
-penis

Question 22

Scrotum functions

Answer 22

e scrotum hangs loosely from its attachments, providing the testes with a temperature that is below body temperature.
-The scrotum, which provides a temperature about 3°C (5.4°F) lower, is necessary for the production of healthy sperm.
-when it’s cold it brings testes closer to warmth

Question 23

Penis function

Answer 23

to deliver sperm into the female reproductive tract.

Question 24

Erection

Answer 24

When erectile tissue fills with blood and cause penis to enlarge and become rigid for copulation to take place

Question 25

Male secondary sex characteristics

Answer 25

• Deepening of the voice as the larynx enlarges

• Increased hair growth all over the body, particularly in the axillary and pubic regions and on the face

• Enlargement of skeletal muscles to produce the heavier muscle mass typical of the male physique

• Increased heaviness of the skeleton due to bone growth in both size and density