Testis

Question 1

The testes are responsible for producing (2)

Answer 1

-sperm (the male gamete)
-androgens (male reproductive hormones) `

Question 2

Depending on the species, testes can be located either ___ or ____

Answer 2

-internally (less common)
-externally (more common)

Question 3

External testes are contained within a

Answer 3

Scrotum

Question 4

Which species have external testes?

Answer 4

-domestic mammals (bull, ram, boar, dog)
-primates

Question 5

Which species have internal testes?

Answer 5

-birds
-marine mammals
-elephants

Question 6

In the bull, the testes are (3)

Answer 6

-located near the belly
-large
-oriented vertically in the scrotum

Question 7

The testes in the sheep are oriented

Answer 7

Vertically in the scrotum

Question 8

Testes should be (3)

Answer 8

-similar size
-moderately firm
-regularly shaped (species dependent)

Question 9

The testes in the horse (stallion) are (2)

Answer 9

-tucked up high (not pendulous)
-oriented horizontally in the scrotum

Question 10

Sperm are produced in the ____ and exit the testes via the ____

Answer 10

-lobules (parenchyma)
-rete testis/tubules

Question 11

Sperm production occurs in the ____ of the testes

Answer 11

Lobules (parenchyma)

Question 12

3 layers of tissue within the scrotum (from outside to in)

Answer 12

-Parietal Vaginal Tunic
-Visceral Vaginal Tunic
-Tunica Albuginea

Question 13

Which tissue inside the scrotum creates the lobules?

Answer 13

Tunica albuginea

Question 14

Which two tissues within the scrotum are in close association with one another?

Answer 14

Visceral vaginal tunic and Tuniva albuginea

Question 15

The tunica albuginea meets in the centre to form the

Answer 15

Mediastinum

Question 16

The mediastinum prevents

Answer 16

Collapse of the tubules/rete testes

Question 17

The testicular capsule is composed of

Answer 17

Visceral vagina tunic and Tunica albuginea

Question 18

Smooth muscle in the tunica albuginea contract to move __ from ___ to ___

Answer 18

Sperm from the parenchyma to rete testis

Question 19

The parenchyma contains ___ which are composed of ____

Answer 19

Lobules; seminiferous tubules

Question 20

The parenchyma has two compartments:

Answer 20

-tubular (where sperm is produced)
-interstitial

Question 21

Seminiferous tubules are made of (2)

Answer 21

-seminiferous epithelium (sperm generation)
-lumen (empty space for sperm travel)

Question 22

The seminiferous epithelium contains these cells (2)

Answer 22

-serotoli cells
-immature germ cells

Question 23

The outside border of the seminiferous epithelium is the ___ which is made of ___ cells

Answer 23

Lamina propria; myopic cells

Question 24

Which cells support sperm development

Answer 24

Sertoli cells

Question 25

Between the seminiferous tubules is the

Answer 25

Interstitium

Question 26

The interstitium (between the seminferous tubules) contains (3)

Answer 26

-leydig cells -capillaries -macrophages

Question 27

Leydig cells are located in the ___ and produce ___

Answer 27

Interstitium; hormones