T. S. Of Testis of Mammal
Testis
are the male gonads.
1. The
testis is somewhat oval or rounded in shape surrounded peritoneum
followed
by a layer of fibrous connective tissue, the tunica albuginea.
2. Histologically each testis shows presences of
convoluted seminiferous tubules separated from one another by inter tubular
connective tissue.
3. In connective tissue blood vessels and
interstitial cells (Leydig cells) are present.
4. The interstitial cells secrete a
hormone testosterone
5. Each seminiferous tubule is oval or rounded
in appearance and surrounded by basement membrane and lined by
germinal epithelium
6. Seminiferous tubule shows presence varous
stages of developing sperms includes, spermatogonia, primary
spermatocytes, secondsry spermatocytes and spermatids.
7. In between the germinal cells certain large
sertoli cells are present
Function
of Testis
a. Seminiferous tubule produces sperm.
b. Interstitial cells secret male sex hormone
called testostron which control male secondary sex character
c. Sertoli cells of seminiferous tubule
supplying nourishment to the developing sperms.
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