What is spermatogenesis? Plus diagrams.

I need some help on spermatogenesis and oogenesis. I also need some diagrams. Please help.

Expert Answers

An illustration of the letter 'A' in a speech bubbles

"Spermatogenesis is the process by which male spermatogonia develop into mature spermatozoa, also known as a sperm cell."

The cycle of the spermatogenesis takes 64 days and can be broken down into two successive sections:

Spermatocytogenesis: primitive cells called spermatogonia increase in number by mitosis.

Spermiogenesis: spermatids change in form during spermiogenesis.  They change into the streamline spermatozoa adapted for fertilization.

Oogenesis is the process by which the ovum is developed. "Oogenesis consists of several sub-processes: oocytogenesis, ootidogenesis and finally maturation to form an ovum. Folliculogenesis is a separate sub-process that accompanies and supports all three oogenetic sub-processes." 

Oocytogenesis: starts with the process of developing oogonia. This stage is complete either before or shortly after birth.

Ootidogenesis: when the primary oocyte develops into an ootid. This is achieved through the process of meiosis.  The ootid eventually matures into an ovum.


See eNotes Ad-Free

Start your 48-hour free trial to get access to more than 30,000 additional guides and more than 350,000 Homework Help questions answered by our experts.

Get 48 Hours Free Access
Approved by eNotes Editorial