Zona

Guessing it will not breach the egg wall. Chemoattractants and sperm surface proteins designed to bind receptors on the zona pellucida/initiate the acrosomal reaction are species-specific.

See entire post

... on the afferent arteriole entering the glomerular capsule mainly * hormonal through many different hormones secreted from adrenal medulla and zona glomerulosa in the adrenal cortex and affect mainly efferent areriole and is accompanied by Na and K retension , Also ADH from supra optic and ...

See entire post

... I need atleast five labels, and I also have a few questions to ask. First, I can identify the ovum itself, the cytoplasm of the ovum, and the Zona Pellucida in the picture. That makes three. I cannot seem to find two more things to identify, and I've had difficulty in finding resources on ...

See entire post

... menstrual cycle a) about 100 of the prenatal follicles begin to develop into antral follicles b) one follicle becomes the dominant follicle c) a zona pellucida forms around the ovary d) about 10 to 25 of the preantral follicles form granulosa cells. I think the answer is "b" but then I might ...

See entire post