When the tight junctions of the sustentacular cells divide the seminiferous tubules into two compartments:
A) meiotically active cells are near the basement membrane.
B) meiotically active cells are near the lumen.
C) spermatogonia are near the lumen.
D) both A and C are true.

Question

Quizplus · Accepted Answer

When the tight junctions of the sustentacular cells divide the seminiferous tubules into two compartments, meiotically active cells are located near the lumen. This is because the spermatogonia are located closest to the basement membrane, while the meiotically active cells (primary spermatocytes, secondary spermatocytes, and early spermatids) are located closer to the lumen. Therefore, only choice B is correct. Choice A is incorrect because meiotically active cells are not located near the basement membrane. Choice C is also incorrect because spermatogonia are not located near the lumen.

When the Tight Junctions of the Sustentacular Cells Divide the Seminiferous