Testicles are reproductive glands enclosed in scrotum. These are suspended by the spermetic cords. Left testis is little lower than the right. These are oval in shape. These are 4-5 centimetres long, 2.5 centimeters wide, 3 centimeters in diameter and weigh about 13 to 14 gms.

What type of cells testis contain?

There are two groups of cells one secretes the hormone named testosterone. Testoterone is responsible for secondary sex characters in male.

Testicular tubules produce the spermatozoa.

What is the shape of spermatozoa?

Each spermatozoa contains head, neck, body, and tail.

Where spermatozoa are produced?

The testes contain nearly a thousand thread like tubes, each 65to 90 centimeters long. Spermatozoa are produced here, about 50 million a day. They are then transferred to store house called epididymis. Epididymis is a pair of 7 meter long, tortuous canal that Be on the upper part of the testes. They consist of 15-20 tubules opening into a single channel. In epididymis the sperms attain motility and greater fertility.

What is ductus deferens?

It is a continuation of the tail of the epididymis and is a twisted tube, It is situated behind the testis and continues as spermatic cord.


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