Lecture 36: Ruminant Male Reproductive System (Exam 3)

Question 1

Describe the flehman response

Answer 1

Get the scent of the female/urine into the olfactory system

Question 2

Label the following:

Answer 2

Question 3

Label the following

Answer 3

Question 4

List the basic movement of sperm through the repro system

Answer 4

Teste -> ductus deferens -> urethra

Question 5

Label the following

Answer 5

Question 6

Where is the prostate found

Answer 6

Dorsal to the Urethra

Question 7

What occurs in males w/ PNS & SNS stimulation

Answer 7

• PNS - erection
• SNS - ejaculate

Question 8

T/F: Semen is made in the testes

Answer 8

False; The testes make sperm & during ejaculation fluids are added to the sperm to create semen

Question 9

Label the following

Answer 9

Question 10

Label the following of the sperm

Answer 10

Question 11

Label the following ovum

Answer 11

Question 12

Describe male sex cells

Answer 12

• Produced by testicles
• Contained in the scrotum

Question 13

What is the scrotum

Answer 13

External sac that hold testicles outside of the body to keep sperm @ 4 to 5 degrees cooler than body temp

Question 14

What are the primary roles of the testicle

Answer 14

• Produce sperm
• Secrete testosterone

Question 15

Whose sperm is bigger mouse of an elephants

Answer 15

A house mouses sperm

Question 16

What is the ductus deferens

Answer 16

Slender tube from the epididymis to the urethra which moves sperm to the urethra @ ejaculation

Question 17

What is the urethra

Answer 17

• Long tube from the bladder to the penis
• Passageway for urine & sperm out of the body

Question 18

What is the difference btw/ the type of penis in equine & ruminants

Answer 18

• Equine have a musculocavernous type of penis
• Firbroelastic type of penis

Question 19

What is the penis

Answer 19

Male organ of copulation which conveys semen & urine out of the body

Question 20

What is the penile retractor muscle

Answer 20

• Allows extension & retraction of the penis
• Sigmoid flexure extends in copulation

Question 21

Label the following

Answer 21

Question 22

What is the role of the prepuce

Answer 22

Covers the penis to protect the glans penis when not in use

Question 23

Label the following

Answer 23

Question 24

What is this

Answer 24

Frenulum

Question 25

What is the frenulum

Answer 25

* Used to spray there scent around * Used to "spray" semen into the female

Question 26

Describe the descent of the testicles

Answer 26

* Begins w/in the abdomen caudal to the kidneys * Testicles are located retroperitoneally btw/ the peritoneum & the body wall * The gubernaculum passes ventrally through the inguinal canal into the scrotum * The testicles & epididymis follows the gubernaculum * As the testicle moves through the inguinal canal it picks up the parietal peritoneum & the fascial layers of the inner & outer abdominal wall (Becomes the vaginal tunic once outside of the abdomen

Question 27

Describe the inguinal canal

Answer 27

* An opening in the caudal part of the abdominal wall * It is a potential space btw/ the flesh of the internal abdominal oblique & aponeurosis of the external abdominal oblique * The deep inguinal ring is found @ the free edge of the internal abdominal oblique * Superficial inguinal ring lies btw/ the pelvic & abdominal oblique aponeurosis

Question 28

Label the following

Answer 28

Question 29

What is the gubernaculum

Answer 29

* A jelly like cord stretching from the testicle to the tail of the epididymis then goes into the inguinal canal * Becomes the scrotal ligament

Question 30

What are the components of the spermatic cord

Answer 30

* Ductus deferens * Testicular VAN

Question 31

When do the testes descent

Answer 31

* Varies by species * Horse usually 10 14 days before or after parturition * Ruminants & pigs it occurs before parturition

Question 32

How do sperm cells travel through the repro system

Answer 32

Made in testicle -> head of epi -> body -> tail -> ductus deferens -> urethra -> glans penis -> if they have it the urethral process

Question 33

Label the following (just the numbers #)

Answer 33

Question 34

What is the pampiniform plexus

Answer 34

Coil of testicular veins around the testicular artery that are used to draw heat away from the artery to cool blood before it reaches the testicle

Question 35

Label the following

Answer 35

Question 36

What happens in the head & body of the epididymis

Answer 36

Spermatozoa mature into mature sperm in the head & body

Question 37

What is the mesorchium

Answer 37

The serosal folds connecting the visceral & parietal vaginal tunics

Question 38

Label the following

Answer 38

Question 39

Label the following

Answer 39

Question 40

Describe the epididymis

Answer 40

* Long coiled tube that is a path for sperm * Provide passageway for the sperm to exit out of the seminiferous tubules * Storage for sperm * Fluid secretion to nourish the sperm * Place for sperm maturation

Question 41

Label the following:

Answer 41

Question 42

What are the accessory glands in the ruminant male repro system

Answer 42

* Seminal vesicles * Prostate glands

Question 43

What is the job of the seminal vesicles

Answer 43

Add fructose & citric acid to nourish the sperm

Question 44

Describe the prostate gland

Answer 44

Located @ the neck of the bladder * Cleans the urethra prior to & during ejaculation * Provides minerals for the sperm * Provides the medium for sperm transport * Provides the characteristics odor of the semen

Question 45

What is associated w/ the urethra & adds the liquid portion of the ejaculate

Answer 45

Accessory sex glands

Question 46

Fill out the following

Answer 46

Slide 34

Question 47

What is the cowper's gland

Answer 47

* Also called the bulborethral gland * Paired organs * Cleans the urethra prior to sement passage

Question 48

Label a & b

Answer 48

* a: vesicular gland * b: bulbourethral gland