The Male Reproductive System

Front 1

Another name for reproductive cells is _____________.

Back 1

gametes

Front 2

The male organs of reproduction are the _______________.

Back 2

testes

Front 3

The two products of the testes are sperm cells and ________________.

Back 3

hormones

Front 4

Suspended below the perineum is a fleshy pouch containing the testes called the ________________.

Back 4

scrotum

Front 5

The boundary between the two chambers of the scrotum is a raised thickening known as the _________.

Back 5

raphe

Front 6

In the dermis of the scrotum there is a thin layer of muscle called the ____________.

Back 6

dartos

Front 7

The smooth muscle in the dermis of the scrotum contracts to give the scrotum a characteristic appearance of ___________.

Back 7

wrinkling

Front 8

Within the fetus, the testes have moved into the scrotum by the end of month number ___________.

Back 8

seven

Front 9

The failure of the testes to descend into the scrotum is called __________.

Back 9

cryptorchidism

Front 10

The nerves, ducts, and blood vessels emerging from the testes together form the ________________.

Back 10

spermatic cord

Front 11

The canal through which the spermatic cord passes into the peritoneal cavity is the ____________.

Back 11

inguinal canal

Front 12

The tightly coiled tubules of the testes are known as ______________.

Back 12

seminiferous tubules

Front 13

Protecting the developing sperm from the male's immune system are the _______________.

Back 13

Sertoli cells

Front 14

The hormone-producing cells lying between the seminiferous tubules are _____________.

Back 14

interstitial cells

Front 15

The interstitial cells of the testes are responsible for producing __________.

Back 15

sex hormones

Front 16

The plexus formed by the union of the seminiferous tubules is the ________.

Back 16

rete testis

Front 17

Efferent ducts arising from the rete testes enter the tubule called the _____________.

Back 17

epididymis

Front 18

The process through which sperm cells are produced is ___________.

Back 18

spermatogenesis

Front 19

Sperm cells are formed from primordial cells known as _____________.

Back 19

spermatogonia

Front 20

The process of spermatogenesis takes place in the _____________.

Back 20

seminiferous tubules

Front 21

The cells produced by duplication of the spermatogonia are ___________.

Back 21

spermatocytes

Front 22

The cellular process by which spermatocytes form spermatids is called ___________.

Back 22

meiosis

Front 23

Spermatids will mature to form sperm cells, also known as ____________.

Back 23

spermatozoa

Front 24

During the process of meiosis a spermatocyte with 46 chromosomes will produce a spermatid having chromosomes that number __________.

Back 24

23

Front 25

The chromosomes of the sperm cell are packed into the region of the cell known as the __________.

Back 25

head

Front 26

Enzymes important in fertilization are contained in the tip of the head of the sperm cell called the ____________.

Back 26

acrosome

Front 27

The mitochondria of the sperm cell are contained in a portion of the cell known as the ___________.

Back 27

midpiece

Front 28

The tail of the sperm cell provides motion by acting as a(n) __________.

Back 28

flagellum

Front 29

The site of sperm cell maturation over a period of about two weeks is a duct called the _____________.

Back 29

epididymis

Front 30

The duct where damaged sperm cells and debris are absorbed is the ______________.

Back 30

epididymis

Front 31

Another name for the vas deferens is the ___________.

Back 31

ductus deferens

Front 32

The tubular extension of the epididymis that extends through the inguinal canal is the ___________.

Back 32

vas deferens

Front 33

Just before reaching the prostate gland, the vas deferens enlarges to a portion called the _____________.

Back 33

ampulla

Front 34

Within the abdominal cavity, the vas deferens passes over the top and posterior surface of the __________.

Back 34

urinary bladder

Front 35

At the ampulla, the vas deferens joins with the duct leading from the _____________.

Back 35

seminal vesicles

Front 36

The duct passing from the urinary bladder to the tip of the penis is the _______________.

Back 36

urethra

Front 37

The three portions of the urethra are the membranous urethra, the penile urethra, and the _____________.

Back 37

prostatic urethra

Front 38

The penile portion of the urethra receives secretions from the _________.

Back 38

bulbourethral glands

Front 39

Prostaglandins and nutrient fluids are added to the sperm cells by the ________________.

Back 39

seminal vesicles

Front 40

An alkaline fluid contributing to sperm motility is produced by a gland encircling the urethra called the _________________.

Back 40

prostate gland

Front 41

Older males may experience interference with urination if there is enlargement of the ____________.

Back 41

prostate gland

Front 42

Two small glands situated at the base of the penis are called bulbourethral glands, or ______________.

Back 42

Cowper's glands

Front 43

The root, shaft, and glans are three portions of the ____________.

Back 43

penis

Front 44

Most of the body of the penis consists of tissue that is ____________.

Back 44

erctile

Front 45

Erection of the penis takes place after the accumulation of ____________.

Back 45

blood

Front 46

The opening of the penis to the exterior is the ____________.

Back 46

external urethral meatus

Front 47

The ejaculate contains sperm cells that number approximately ____________.

Back 47

20 million to 100 million per mL

Front 48

Spermatogenesis is stimulated by the pituitary hormone known as ___________.

Back 48

follicle stimulating hormone

Front 49

The male hormone that promotes sperm cell maturation and maintains the accessory organs is called ______________.

Back 49

testosterone

Front 50

The general name for male hormones that accelerate puberty and initiate sexual maturation is ___________.

Back 50

androgens