Lecture 3

Question 1

Where does the testes develop

Answer 1

In the fetal abdomen and descend into the scrotum before birth

Question 2

What is the shape of the testes

Answer 2

Similar shape and consistence: ovoid and firm

Question 3

What is the name of the connective tissue capsul on the testes

Answer 3

Tunica albuginea

Question 4

What is the septa

Answer 4

Extensions from the tunica albuginea into the testes. Divide the testis into lobules, support the seminiferous tubules

Question 5

What are lobules

Answer 5

Contain the seminiferous tubules

Question 6

What is function of the seminiferous tubules

Answer 6

Produce spermatozoa

Question 7

What are Sertoli cells

Answer 7

Nurse function for developing spermatozoa

Question 8

What are leydig cells

Answer 8

Interstitial cells with endocrine function

Question 9

What is the scrotum

Answer 9

Cutaneous sac surrounding testes. Divided into 2 cavities by medium septum. Contains the testes, epididymis and distal portion of the sermatic cord

Question 10

What is the vaginal tunic

Answer 10

Extension of the peritoneum called the tunica vaginalia. Covers the spermatic cord, epididymis and the testes

Question 11

What are the three regions or the epididymis

Answer 11

The head, body and tail

Question 12

What are the functions of the epididymis

Answer 12

Transports, feeds, stores and matures sperm as well as reabsorbs dead sperm

Question 13

What does the spermatic cord contain

Answer 13

Testicular artery and vein, lymphatics , autonomic nerves, ductus deferens, cremaster muscle, tunica vaginalis

Question 14

What is the vas deferens

Answer 14

Continuation of tail of epididymis. Goes into abdomen via inguinal rings, fuses with urethra just after the neck of the bladder

Question 15

What is an ampulla

Answer 15

Enlarged area of a tube or canal that’s used for the storage of aperm

Question 16

What are the 4 accessory sex glands

Answer 16

Prostate, bulbourethral glands, seminal vesicles, other glands

Question 17

What is a prostrate and where is it found

Answer 17

Located at the base of the bladder. Adds it’s secretions to the sperm during ejaculation

Question 18

Where is the bulbourethral gland and what does it do

Answer 18

Caudal to prostate, secretes mucus

Question 19

What are the seminal vesicles used for

Answer 19

Add nutrition and buffers to sperm

Question 20

What are the other accessory sex glands

Answer 20

Coagulating glands,
Glands of the ductus deferens
Preputial glands

Question 21

What is the urethra and where is it located

Answer 21

Long tube from the urinary bladder to the glans penis. Serves both reproductive and urinary systems

Question 22

What are the two types of penis

Answer 22

Fibroelastic or vascular

Question 23

Describe a dogs penis

Answer 23

Has os penis and bulbus glands that form a bulb in the vagina

Question 24

Describe cat penis

Answer 24

Has penile spines

Question 25

Describe a ruminant penis

Answer 25

Has a sigmoid flexure and fibroelastic penis.

Question 26

Describe a pig penis

Answer 26

Anterior part of a penis that has a corkscrew shape

Question 27

Describe a goat penis

Answer 27

Has a urethral process in the shape of a hook

Question 28

Describe the prepuce

Answer 28

Forms a sheath around the glans penis

Question 29

What is paraphimosis

Answer 29

Cannot get it back in

Question 30

Phimosis

Answer 30

Cannot get it out

Question 31

Describe the inguinal canal

Answer 31

Spermatic cord leaves the testis and enters the abdominal cavity by the way of the inguinal canal. It is formed by the abdominal muscles

Question 32

What happens when you have weakened inguinal canal muscles

Answer 32

Hernias

Question 33

Describe temperature regulation

Answer 33

Achieved by the scrotum, the cremaster muscle, and the pampering plexus. Important for the development of sperm where the body temperature can be spermicidal

Question 34

What does the hypothalamus do

Answer 34

Produced GnRH to stimulate the pituitary to produce FSH and LH

Question 35

What does FSH do

Answer 35

Stimulate Sertoli cells and produce estrogen

Question 36

What is LH

Answer 36

Stimulates testosterone by leydig cells

Question 37

Describe crypt orchidism

Answer 37

Failure to descend can result in retention anywhere from its origin, into the inguinal canal, along the vaginal tunic. Can be bilateral or unilateral. Is genetically controlled

Question 38

Erection and profusion of penis

Answer 38

Occur as a result of sexual stimulation causing dilation of the arteries and stiffening of the penis.

Question 39

What is emission

Answer 39

Movement of spermatic fluid along the ductus deferens to the urethra

Question 40

What is ejaculation

Answer 40

The passage of Deneb along the penile urethra brought about by striated muscles

Question 41

What is the principal of artificial insemination

Answer 41

Collect the male, examine sperm, divide it into aliquots

Question 42

What are 6 advantages to AI

Answer 42

Genetic improvement Control of venereal disease Availability of accurate breeding records necessary for good herd management. Economic Safety through elimination of dangerous animals Use for difficult females who don't want to breed

Question 43

What are three methods to obtain semen

Answer 43

Electroejaculation Dummies Manual collection

Question 44

What are the 4 steps of ivf

Answer 44

Hormone treatment Remove sperm Remove eggs Place in a test tube

Question 45

What are the advantages of embryo transfer

Answer 45

More progeny

Question 46

What is the function of the testis

Answer 46

Production of sperm and hormones