(a) Inside the seminiferous tubules are
- Spermatogonial cells
- Sertoli cells
(b) Outside the seminiferous tubules are Ley dig cells.
Functions:
- Spermatogonial cells form spermatozoa.
- Sertoli cells provide nutrition to the germ cells and help in spermiogenesis.
- Ley dig, cells secrete the male sex hormone, testesterone.