Question

1. Progesterone is responsible for the premenstrual changes of the uterus. Give reason.
2. Thymus gland is a lymphoid gland. Give reason​

Answer 1

Answer:

1. The ruptured follicle closes after releasing the egg and forms a corpus luteum, which produces progesterone. During most of this phase, the estrogen level is high. Progesterone and estrogen cause the lining of the uterus to thicken more, to prepare for possible fertilization.
2. The thymus is a specialized primary lymphoid organ of the immune system. Within the thymus, Thymus cell lymphocytes or T cells mature.    T cells are critical to the adaptive immune system, where    the body adapts specifically to foreign invaders.