what is spermatogenesis?; stages of spermatogenesis: process of spermatogenesis; maturation of spermatozoa all things is contributed in this ppt. short and important details is covered.

1. SPERMATOGENESIS
• Submitted To :-
– Prof. H V Parmar sir
– College of Fisheries
– Veraval
• Submitted by :-
– Harsh Dhimmar
– Reg. No. -3030315021
– Roll No – 14

2. What is spermatogenesis ?
• Spermatogenesis is the process by which
male primordial germ cells called
spermatogonia undergo meiosis, and
produce a number of cells termed
spermatozoa.
• The initial cells in this pathway are called
primary spermatocytes
• In short the formation of sperm its called
Spermatogenesis

3. Spermatogenesis can be
divided into following six stages
1. Spermatogonia
2. Spermatogonium
3. Primary spermatocytes
4. Secondary spermetocytes
5. Spermatids
6. Spermetozoa
Spermiogenesi
s
Spermatogenesis

5. Spermatogonia
• A spermatogonia is an undifferentiated
male germ cell, originating in a
somniferous tubule and dividing into two
primary spermatocytes in the production of
spermatozoa.

6. Spermatogonium
• The spermatogonia divide mitotically and
give rise to small round spermatogonium
with centrally placed nucleus.
• Structurally , these are similar to
spermatogonia except in their size.

8. Primary Spermatocytes
• Spermatogonium which resides in the
basal compartment of somniferous
tubules, divides mitotically to produce two
diploid intermediate cells called primary
spermatocytes.
• This stage is also known as ‘synizesis
knot’.
• The nucleolus is not visible in this stage.

9. Secondary spermatocytes
• The reduction division of primary
spermatocytes results in the formation of
secondary spermatocytes.
• The nucleolus is absent and the cytoplasm
is less in amount.

10. Spermatids to
Mature Spermatozoa

11. Spermatids
• The spermatids are formed as a result of
second meiotic division of the secondary
spermatocytes.
• The spermatids are much smaller than the
secondary spermatocytes.
• The nucleus of spermatid is more or less
round in shape.

12. Spermatozoa
• The spermetids ultimately into mature
spermatozoa (spermatogenesis) by
orientation and reorganization of nucleus
and cytoplasm together with the
development of flagellum.

13. Cont…
• The mature spermatozoa is appear to
have many parts:
The nucleus Head
The Golgi appratus Acrosomic cap
The Mitochondria Middle piece
The Flagellum Tail