Internal Structure of Testis

Q.

There are around ________ testicular lobules.

1. 250

2. 200

3. 350

4. 550

Q.

In the given cross section of testis, identify the labelled parts and match them with their relative description given alongside.

i. storage area for the sperm

ii. carry the sperm from the testes to the epididymis

iii. encases the testis and forms testicular lobules

iv. the seminiferous tubles open into this

v. has germinal and sertoli cells

1. 1-iii, 2-i, 3-iv, 4-v, 5-ii

2. 1-iii, 2-v, 3-iv, 4-ii, 5-i

3. 1-iv, 2-iii, 3-ii, 4-v, 5-i

4. 1-ii, 2-i, 3-iii, 4-v, 5-iv

Q. Select the correct sequence for transport of sperm cells in male reproductive system.

1. Seminiferous tubules $\to$ Vasa efferentia $\to$ Epididymis $\to$ Inguinal canal $\to$ Urethra
2. Testis $\to$ Epididymis $\to$ Vasa efferentia $\to$ Rete testis $\to$ Inguinal canal $\to$ Urethra
3. Testis $\to$Epididymis $\to$ Vasa efferentia $\to$ Vas deferens $\to$ Ejaculatory duct $\to$ Inguinal canal
   $\to$ Urethra $\to$ Urethral meatus
4. Seminiferous tubules $\to$ Rete testis $\to$ Vasa efferentia $\to$ Epididymis $\to$ Vas deferens $\to$ Ejaculatory
   duct $\to$ Urethra $\to$ Urethral meatus

Q. Sertoli cells are found in

1. Kidney of rabbit
2. Ovary of rabbit
3. Testes of rabbit
4. Ovary of frog

Q. Tunica albuginea is related to

1. Liver
2. Lung
3. Spleen
4. Testes

Q. Match the lists and find the correct option.

	I		II
a	Leydig cells	I	Carry sperms from seminiferous tubules to vasa efferentia
b	Sertoli cells	II	Nourish sperms
c	Rete testis	III	Secretion testosterone
d	Corpus luteum	IV	Secretion of progesterone
		V	Secretion of estrogen

1. a-II, b-III, c-V, d-IV
2. a-III, b-II, c-V, d-IV
3. a-III, b-II, c-I, d-IV
4. a-II, b-III, c-I, d-IV

Q. The functional unit of the testis of man is

1. Uriniferous tubules
2. Malpighian tubules
3. Seminiferous tubules
4. Acini or lobules

Q. Draw a diagrammatic sectional view of a human seminiferous tubule, and label Sertoli cells, primary spermatocyte, spermatogonium and spermatozoa in it.

Q. Connective tissue around seminiferous tubules possess endocrine cells called?

1. Leydig cells
2. Sertoli cells
3. Primary germ cells
4. Both A and B

Q. The combined length of seminiferous tubules of man is about .............. meters.

1. 100 - 200
2. 400 - 600
3. 200 - 400
4. 600 - 800