Anatomy

Question 1

the primary organs of reproduction

Answer 1

testes

Question 2

the male gonads fulfill two essential functions

Answer 2

1. gametogenesis
2. steroidogenesis

Question 3

sperm cell formation

Answer 3

gametogenesis

Question 4

testosterone production

Answer 4

steroidogenesis

Question 5

Each testicle is surrounded by ________, a connective tissue capsule

Answer 5

tunica albuginea

Question 6

are convoluted and occupy the greatest portion of each testicle

Answer 6

seminiferous tubules

Question 7

Seminiferous tubules are supported by
connective tissue extensions known as

Answer 7

septae or trabeculae

Question 8

a.k.a sustentacular cells

Answer 8

Sertoli cells

Question 8

located in the seminiferous tubules

Answer 8

sertoli cells

Question 9

provides a nursing function for developing spermatozoa

Answer 9

sertoli cells

Question 10

form a diffusion barrier between the ________ and the ________, providing a microenvironment for _______ and ______

Answer 10

Sertoli cells:
germinal cells
blood
meiosis
normal gametogenesis

Question 10

sertoli cells divides the seminiferous tubules into two compartments

Answer 10

1. basal compartment
2. adluminal compratment

Question 11

communicates with the interstitial fluid and provides space for germinal epithelial cells

Answer 11

basal compartment

Question 12

the space between sertoli cells that communicates centrally with the lumen of the tubule

Answer 12

adluminal compartment

Question 13

a.k.a interstitial cells

Answer 13

Leydig cells

Question 13

found in connective tissue surrounding seminiferous tubules

Answer 13

Leydig cells

Question 14

Ductus deferens:
continuation of the duct system from the tail of the epididymis to the ______

Answer 14

pelvic urethra

Question 14

Collection and storage tubule of the testis

Answer 14

Epididymis

Question 15

produces testosterone

Answer 15

Leydig cells

Question 15

Begins at the pole of the testis continues to one side, terminating into the caudal part of the testis just before it makes an upward turn

Answer 15

Epididymis:
head
body
tail

Question 16

a.k.a vas deferens

Answer 16

Ductus deferens

Question 17

Storage in the epididymis allows

Answer 17

allows the spermatozoa to reach maturity and become motile

Question 18

As the ductus deferens leaves the testis, toward the abdomen, it is enclosed along
with the

Answer 18

testicular artery, vein, nerve, and
lymphatic vessels within the visceral layer
of the vaginal tunic (spermatic cord)

Question 19

within the parietal layer of the vaginal tunic (…?)

Answer 19

ductus deferens (…?)

Question 19

within the visceral layer of the vaginal tunic

Answer 19

spermatic cord

Question 20

Ductus deferens terminates with an enlarged, glandular area

Answer 20

ampulla

Question 21

contracts in cold weather and holds the testes closer to the abdominal wall

Answer 21

tunica dartos

Question 21

contains a subcutaneous layer of smooth muscle fibers

Answer 21

tunica dartos

Question 21

cutaneous sac containing the testes

Answer 21

scrotum

Question 22

lined with the parietal layer of the vaginal tunic, a continuation of parietal peritoneum into the ______

Answer 22

scrotum

Question 23

provide secretions that empty into the __________ near their origin

Answer 23

Accessory glands; Pelvic urethra

Question 23

accessory glands

Answer 23

ampulla of the ductus deferentes, Vesicular glands (seminal vesicles), Prostate gland, Bulbourethral glands (a.k.a Cowper glands)

Question 24

secretion of seminal vesicle

Answer 24

secretes fructose, inositol, ergothioneine, ascorbic acid

Question 25

at ejaculation the ________ are mixed with sperm and fluid from the epididymides to form _____

Answer 25

Accessory sex gland secretions (seminal plasma); Semen

Question 26

secretion of prostate gland

Answer 26

zinc, secretes fructose, citric acid, cholesterol, proteins

Question 27

secretion of Cowper gland/ Bulbourethral gland

Answer 27

produces vaginal plus (rodents), fluid that prepares urethra for ejaculation

Question 28

secretion of ampullary and coagulating gland

Answer 28

produces vaginal plug (rodents)

Question 29

male organ of copulation

Answer 29

Penis

Question 30

Starts at the caudal border of the ischial arch, extending as the body, to the free extremity

Answer 30

Penis: root/crura, body, glans

Question 31

Comparative anatomy of the male reproductive organ: Dog

Answer 31

encirclement of the pelvic urethra by the prostate

Question 32

Comparative anatomy of the male reproductive organ: Ram

Answer 32

urethral process

Question 33

Comparative anatomy of the male reproductive organ: Stallion

Answer 33

double-folded prepuce

Question 33

Comparative anatomy of the male reproductive organ: Boar

Answer 33

preputial diverticulum

Question 34

penis is mostly composed of by cavernous tissue________ surrounded by a dense fibroelastic covering ______

Answer 34

corpus cavernosus; tunica albuginea

Question 35

the dog has a ______ at the caudal part of the glans

Answer 35

bulbus glandis

Question 36

Enlargement of the bulbus glandis in dogs is responsible for

Answer 36

prolonged retention of the penis during coitus

Question 37

animals having sigmoid flexure of their penis

Answer 37

boar, bull, ram

Question 38

resulting in an S shape when not erect, but in erection causes extension of the flexure

Answer 38

sigmoid flexure

Question 39

muscles of the male genitalia

Answer 39

Cremaster muscle, Urethralis, Bulbospongiosus muscle, Ischiocavernosus muscle, Retractor penis muscle

Question 40

assist in emptying the urethra

Answer 40

bulbospongiosus muscle

Question 41

assists in erection process

Answer 41

ischiocavernosus muscle

Question 42

assists in the return of the penis to the prepuce after intromission

Answer 42

retractor penis

Question 43

pulls the testis up against the superficial vaginal ring, particularly in cold weather

Answer 43

Cremaster muscle

Question 44

pelvic continuation from the smooth muscle wall of the urinary bladder, its peristaltic action assists in the transport of urine or semen through the pelvic urethra

Answer 44

Urethralis

Question 44

striated muscle continuation of the urethralis, continues the action of the urethralis in emptying the urethra

Answer 44

Bulbospongiosus muscle

Question 45

paired, striated muscles that converge on the body of the penis from their origins on the lateral sides of the ischial arch, where contraction pulls the penis upward against the floor of the pelvis

Answer 45

Ischiocavernosus muscle

Question 46

paired striated muscles originating from the suspensory ligaments of the anus, pull the flaccid penis back into the prepuce

Answer 46

Retractor penis muscle