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Question 1

What are the roles of sertoli cells in spermatogenesis?

Answer 1

Question 1

What is decapacitation?

Answer 1

Decapacitation regulates the fertilizing ability of spermatozoa by controlling surface-associated proteins.

(Basically makes it inactive)

Question 2

How is decapacitation maintained?

Answer 2

It depends on sperm surface-associated proteins that are controlled by the interaction between cholesterol, phospholipidsandfibronectin-like substances.

These substances are delivered via small vesicles inseminal vesicles and released in secretions from theepididymisand accessory glands.

Question 3

What is capicatation

Answer 3

basically activation of sperm so it can fertilize the egg

Question 4

What changes occur for capcitation to take place?

Answer 4

1. Change in membrane fluidity due to the removal of cholesterol from the sperm membrane
2. The removal of glycoproteins from the membrane that blocks sperm binding to the egg.
3. A change in membrane potential that permit Ca2+ to enter the sperm and facilitate the acrosome reaction.
4. Phosphorylation of numerous proteins

Question 5

Where does capicatation occur?

Answer 5

Capacitation occurs in the oviduct

Question 6

What should the post acrosomal region not contain?

Answer 6

the post-acrosomal region should not contain any vacuoles

Question 7

What is globozoospermia?

Answer 7

a condition where sperm cells are abnormally round (globular) and have defects in their structure