Which of the following is true regarding sperm?

Options

A. fertilizin : for penetrating egg membrane
B. hyalurodinase : for penetrating egg membrane
C. acrosin : dissolves corona radiata
D. capacitation : takes place in penis

Answer

A

Explanation

Hyaluronidase is a hydrolytic enzyme present in the acrosome of sperm, It lyses the glycosaminoglycans in the extracellular matric holding the cell of th corona radiata together. As the coronal cells become more loosely associated , sperm cells can propel themselves inward, toward the zona pellucida by making a receptive cone or ferilization cone through the cytoplasm of the egg. Hyaluronidase may also be involved breaking down the zona pellucida.
Fertilizin is a chemical substance secreated from the cortical region of egg cytoplasm to attract the sperm towards the egg. Acrosin is released from the acrosome of a spermatozoa as a consequence of the acrosoome reaction. Capacitation is the final stage in the maturation process of spermatozoa. This takes place inside the genital tract as teh sperm penetrates the ovum.