Human ReproductionHard
Question
Which one of the following statements abour the humas sperm is correct ?
Options
A.Acrosome has a conical pointed structure used for precing and penetrating the egg, resulting in fertilization
B.The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization
C.Acrosome serves as a sensory structure leading the sperm toward ovum
D.Acrosome serves no perticular function
Solution
Penetration of human sperm is a chemical machanism. In this, acrosome of sperm undergoes acrosomal reaction and releases certain sperm lysins, which dissolve the egg envelope locally and make the pass for the penetration of sperm. Sperm lysins are acidic protiens. These sperm lysind contain a lytic enzyme hyaluronidase that dissloves the hyluronic acid polymers in the intercellular space, which hold the granulosa cell of corona radiata together corona penetration enzyme and acrosin.
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