Male Reproductive System (Exam 3)

Question 1

What are the 3 male genital organs?

Answer 1

1. testis
2. epididymis
3. ductus deferens

Question 2

What are the 4 accessory genital glands?

Answer 2

1. ampulla of ductus deferens
2. prostate
3. vesicular gland
4. bulbourethral gland

Question 3

What are the 3 external genitalia of the male?

Answer 3

1. penis
2. male urethra
3. scrotum

Question 4

The testis has both an exocrine function, to produce _______, and endocrine function, to produce _______.

Answer 4

spermatozoa
testosterone

Question 5

Part of the testis where the epididymis attaches

Answer 5

epididymal border

Question 6

Pole of testis where head of epididymis attaches

Answer 6

head extremity

Question 7

Pole of testis where tail of epididymis attaches

Answer 7

tail extremity

Question 8

The stroma (supportive framework of testis) is made up of what 3 structures?

Answer 8

1. tunica albuginea
2. septula
3. mediastinum

Question 9

What is the center “island” of connective tissue in the testis?

Answer 9

mediastinum

Question 10

What are the thin walls of connective tissue that connect the tunica albuginea with the mediastinum and divides the parenchyma of the testis into lobules?

Answer 10

septula

Question 11

What are the main structures within the parenchyma of the testis? What occurs here?

Answer 11

convoluted seminiferous tubules
sperm production

Question 12

Term for network of tubules in the mediastinum

Answer 12

rete testis

Question 13

Where spermatozoa flow through from the rete testis to head of epididymis

Answer 13

efferent ductules

Question 14

Give the order of flow of spermatozoa in the testis

Answer 14

1. convoluted seminiferous tubules
2. straight seminiferous tubules
3. rete testis
4. efferent ductules

Question 15

Term for fold of serous membrane connecting epididymis tail with tail of testis

Answer 15

proper ligament of testis

Question 16

Term for ligament that attaches tail of epididymis to parietal layer of vaginal tunic

Answer 16

ligament of tail of epididymis

Question 17

Term for ligament that connects parietal layer to scrotum

Answer 17

scrotal ligament

Question 18

What species have the scrotum ventral to anus and testes oriented so the tail of the epididymis points dorsally?

Answer 18

pig + cat

Question 19

Which species have testes horizontally in the scrotum and the tail of the epididymis points caudally?

Answer 19

dog + horse

Question 20

Which species have testes oriented vertically in the scrotum and the tail of the epididymis ventral while the head of the epididymis is dorsal?

Answer 20

ruminants

Question 21

What is the function of the epididymis?

Answer 21

storage + maturation of spermatozoa

Question 22

(T/F) The sperm in the efferent ductules of the epididymis are structurally immature and cannot fertilize.

Answer 22

False - structurally mature but cannot fertilize

Question 23

Once spermatozoa are in the tail of the epididymis, they are capable of ______.

Answer 23

fertilization

Question 24

Testicular bursa is the space between _____ and ____.

Answer 24

body of epididymis + testis

Question 25

The efferent ductules in the epididymis joint as a single duct called _______.

Answer 25

duct of the epididymis (ductus epididymidis)

Question 26

The duct of the epididymis continues as the _______.

Answer 26

ductus deferens

Question 27

Function of ductus deferens

Answer 27

transport spermatozoa to pelvic part of urethra

Question 28

The ______ of the ductus deferens is an enlargement due to the increase in wall thickness from presence of glands.

Answer 28

ampulla

Question 29

The ampulla of the ductus deferens is absent in what 2 species?

Answer 29

cat + pig

Question 30

Function of accessory genital glands

Answer 30

produce fluid part of ejaculate

Question 31

The diffuse part of the prostate gland in the wall of the pelvic part of the urethra is called:

Answer 31

disseminate part of prostate

Question 32

Match species to parts of the prostate: 1. yes body, no disseminate part 2. no body, yes disseminate part 3. small body, yes disseminate part 4. yes body, poorly developed disseminate part

Answer 32

1. horse 2. sheep + goat 3. ox + pig 4. carnivores

Question 33

In the human and stallion, the vesicular glands is also called ________. Why?

Answer 33

seminal vesicles big lumen like bladder (unlike compactness in other species)

Question 34

The glands in the walls of the vesicular gland secrete _______ to nourish sperm in the female reproductive tract.

Answer 34

fructose

Question 35

The vesicular gland is located lateral to what structure?

Answer 35

ampulla of ductus deferens

Question 36

Which species do not have a vesicular gland?

Answer 36

carnivores (dogs/cats)

Question 37

Function of bulbourethral gland

Answer 37

produce thin, clear mucus to lubricate urethra before ejaculation

Question 38

Where is the bulbourethral gland located?

Answer 38

where urethra enters bulb of penis

Question 39

The bulbourethral is covered by (smooth/skeletal) muscle called ________ M.

Answer 39

skeletal bulboglandularis M

Question 40

The bulbourethral gland is absent in the _____, while present in the ____.

Answer 40

dog cat

Question 41

Where does the root of the penis attach?

Answer 41

ischial bones (hips)

Question 42

The root of the penis has 2 _____ on either side of what structure?

Answer 42

crura ischiatic tuberosity

Question 43

Each crus of the root of the penis is covered by _______ muscles.

Answer 43

ischiocavernosus

Question 44

What is the function of the ischiocavernosus muscles?

Answer 44

restrict venous drainage to accumulate blood during erection

Question 45

The bulb of the penis is covered by _______ muscle.

Answer 45

bulbospongiosus M

Question 46

Function of bulbospongiosus M

Answer 46

propulsive/contractile force to propel spermatozoa out

Question 47

Which nerves innervate the ischiocavernosus + bulbospongiosus Mm?

Answer 47

caudal rectal N + pudendal N

Question 48

What is different about the bulbospongiosus M in the stallion?

Answer 48

goes all the way down to gland penis to urethra for lots of contractile force

Question 49

the root of the penis continues as _______ in the body of the penis which surrounds the urethra.

Answer 49

corpus spongiosum penis

Question 50

Each crus at the root of the penis continues as the ________ in the body of the penis.

Answer 50

corpus cavernosum penis

Question 51

Corpus cavernosum penis is covered by ________.

Answer 51

tunica albuginea

Question 52

The corpus spongiosum penis from the body continues as _________ in the glans penis.

Answer 52

corpus spongiosum glandis

Question 53

(T/F) The corpus cavernosum in the body of the penis continues as the corpus cavernosum glandis in the glans penis.

Answer 53

False - ends at the body

Question 54

In ruminants and the pig, the penis is considered _______ while it is considered ________ in the horse.

Answer 54

fibroelastic musculocavernous

Question 55

Explain why the ruminants/pig have a "fibroelastic" penis.

Answer 55

penis straightens due to relaxation of retractor penis M and pressure allows sigmoid flexure to straight --> erection

Question 56

Explain why the horse has a "musculocavernous" penis.

Answer 56

cavernous spaces fill and increase pressure which leads to erection/elongation

Question 57

Straightening of the _______ in the penis of ruminants and the pig causes erection.

Answer 57

sigmoid flexure

Question 58

Term for projection of urethra at the distal end of the penis

Answer 58

urethral process

Question 59

Which two species have very prominent urethral processes?

Answer 59

sheep + goat

Question 60

The _____ has a very short urethral process, while the ____ and ____ do not have one.

Answer 60

dog cat + pig

Question 61

The urethral sinus empties into the _______.

Answer 61

fossa glandis

Question 62

The fossa glandis is also called ________. Why?

Answer 62

"bean of the penis" build-up of hardened epithelial secretions

Question 63

2 parts of the male urethra

Answer 63

pelvic part penile part

Question 64

Term for extension of urethra in ruminants and the pig that can cause issue with placing a urinary catheter.

Answer 64

urethral recess