Histology of the Testis

Question 1

Seminiferous Tubules

Answer 1

Spermatogenesis occurs here,

Formation of mature functional spermatoza

Question 2

Basement Membrane

Answer 2

Supports outer margin of each tubule composed of connective tissue

Question 3

Spermatogonia

Answer 3

Germ Cells
Large unspecialized cells situated along the outer edges of the tubule, rest on the basement membrane
Remain dormant throughout childhood and only once puberty begins
Start the process of spermatogensis

Question 4

Primary Spermatocytes

Answer 4

Spermatogonia that undergo mitosis

Question 5

Secondary Spermatocytes

Answer 5

Meiosis of primary spermatocytes forming two secondary spermatocytes
with half of the adult number of chromosomes

Question 6

Spermatids

Answer 6

Two formed from divison of secondary spermatocytes

Question 7

Sertoli Cells

Answer 7

“nurse cells”
where spermatids complete their further maturation before being released.
Spermatids are embedded within the cytoplasm of the sertoli cells
Tight junctions exist btw adjacent that form the so called blood testis barrier
Produces a hormone that regulates sperm production

Question 8

Acrosomal Cap of Enzymes

Answer 8

Sertoli cells condensed their nucleus to form the head of the sperm
The cap covers the head

Question 9

Falagellum

Answer 9

Tail of the sperm

Question 10

Lumen of the seminiferous tubule

Answer 10

Mature spermatozoa are released here to be swept into the epididymis

Question 11

Epididymis

Answer 11

Store the spermatozoa

Question 12

Seminiferous Tubules

Answer 12

Will contain germ cells in diff stages of development at the same time

Question 13

Interstitial Cells of Leydig

Answer 13

Produce testosterone

Located between the seminiferious tubules

Question 14

Luteinizing Hormone

Answer 14

The pituitary gland controls the activity of the leydig cells through the release of luteinizing hormone (LH)