Lecture 15 and 16

Question 1

What is a gametes

Answer 1

A haploid sex cells

Question 2

What are the two functions of the urethra within males?

Answer 2

Cumming and peeing

Question 3

What is the name of the dense white tissue that surrounds the testis?

Answer 3

Tunica Alberginea

Question 4

What it the name of the structure that invaginated the testis dividing it into two different sub-sections?

Answer 4

septae

Question 5

What is the function of Leydig cells?

Answer 5

Produce testosterone and other substances

Question 6

Describe the pathway of sperm leaving the body:

Answer 6

1. Semiferous tubules (convuluted in structure) 2. Open into straight section 3. Drains towards a middle like structure (rete) 4. Exit the testis via the efferent tubules

Question 7

What is the function of sertoli cells?

Answer 7

Support the development of the germ cells (produce a blood sperm barrier) so that the body will not destroy itself

Question 8

What is the name of the nerve that supplies the scrotum?

Answer 8

The pudendal nerve

Question 9

What is the main muscle that can act to withdraw the testis?

Answer 9

The cremaster muscle

Question 10

Where is the tunica dartos muscle and what it the function of it?

Answer 10

The tunica dartos is within the muscle itself and it can act to change the surface area of the skin

Question 11

The scrotum is enclosed in a double layer of what kind of tissue?

Answer 11

Serous tissue

Question 12

What is the name of the cord like jelly material that assists in the descent-ion of the testicle from the testis to the scrotum?

Answer 12

Called the gubernaculum

Question 13

What is the mesorchium?

Answer 13

Serous tissue associated with the ductus deferens

Question 14

What is the name of the white outer fibrous tunic that surrounds the testis?

Answer 14

tunica alberginea

Question 15

What is produced by leydig cells?

Answer 15

testosterone

Question 16

Name the following structure shown below

Answer 16

1. spermatic cord/pampiniform plexus
2. caput/ head of the epididymus
3. tunica vaginalis
4. semiferous tubules
5. nothing
6. vas deferens
7. efferent ductules
8. single epidymal duct
9. rete testis
10. mediastinum
11. corpus/body of the epididymus
12. straigtht tubules
13. cauda/tail of the epidymus

Question 17

Name the following structures:

Answer 17

1. cauda epidymus
2. caput epidymus
3. rete testis
4. pampinform plexus
5. corpus epididymus
6. mediastinum testis

Question 18

What is the name of the divison between the two testis?

Answer 18

the scotal septum

Question 19

Describe the layers of the scrotum going from the outside to the inside:

Answer 19

The outer most layer is called the tunica dartos, inner layer is the scrotal fascia then the cremaster muscle and then the tunica vaginalis

Question 20

Name the following structures of the diagram below:

Answer 20

1. spermatic cord
2. vas deferens
3. scrotal skin with dartos muscle
4. visceral layer of tunica vaginalis
5. parietal layer of the tunica vaginalis
6. scrotal fascia
7. scrotal septum
8. cauda/ tail of the epidymus
9. visceral layer of tunica vaginal on testis
10. cremaster muscle

Question 21

Where does the testicular artery branch of from?

Answer 21

from the aorta between the cranial and the mesenteric arteries

Question 22

What is the name of the net of veins that surrounds the arteries and what it the function of it?

Answer 22

pampiniform plexus, helps to cool the arteries via counter-current heat exchange

Question 23

What is the main blood supply for the accesory reproductive glands?

Answer 23

The main blood supply for the accesory reproductive glands is via the internal pudendal artery

Question 24

Name the following structures shown below:

Answer 24

1. Seminal vesicle
2. ureter
3. prostatic urethra
4. vas deferens
5. memebranous urethra
6. urogenital diaphragm
7. corpus cavernosum
8. corpus spongiosum
9. spongy urethra
10. glans penis
11. prepuce
12. external urethral orrifice
13. testis
14. epidymus
15. bulbourethral gland
16. prostate
17. ejaculatorry duct
18. Ampulla of the vas deferens

Question 25

Name the following structures shown in the image below:

Answer 25

1. Bladder
2. ampullary duct of the vas deferens
3. seminal vesicle
4. prostate
5. bulbourethral gland
6. suspensory ligament
7. crus of the penis
8. rectrator penis muscle .
9. cremaster muscle
10. testis
11. head of epidymus
12. corona of glans penis
13. prepuce
14. spermatic cord

Question 26

Differentiate between the terms musculocavernous and fibrolastic:

Answer 26

A musculocavernous penis requires greater engorgement and therefore time. Whereas a fibroelastic penis undergoes rapid erection and deetumescene aided by retractor muscles.

Question 27

Where is the corona glandis in the penis?

Answer 27

circumfrence at the base of the glands penis

Question 28

What is an os penis?

Answer 28

An os penis is a bony like component of the penis

Question 29

What is the bulbus glandis and what is the function of it?

Answer 29

An erectile tissue structure within the penis of canines. When the penis enters the vagina this strucutre will swell up preventing the penis from being able to be removed.

Question 30

What is the urethral groove?

Answer 30

a temporary indentation on the underside of the male penis that is present during developement