Question

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

• A. 1-iii, 2-i, 3-iv, 4-v, 5-ii
• B. 1-iii, 2-v, 3-iv, 4-ii, 5-i
• C. 1-iv, 2-iii, 3-ii, 4-v, 5-i
• D. 1-ii, 2-i, 3-iii, 4-v, 5-iv

Answer 1

The correct option is B

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

The inner covering of the testes is known as the tunica albuginea which dip into the tissue of the testes, dividing it into testicular lobules. Each testicular lobule houses 2 to 3 coiled tubules running through each of these lobules known as the seminiferous tubules. These tubules have 2 kinds of cells - sertoli cells and cuboidal germinal cells which undergo various stages of differentiation to form sperm. The sperm formed here leaves the lobule through the rete testis which opens into ductules called the vasa efferentia. The vasa efferentia leads to the epididymis where sperm can be stored.