Below is the longitudinal section of

The diagram shown below is the longitudinal section of a testis of man. Study it carefully and answer the questions that follow: 

1.  Label the parts numbered 1 to 3 in the diagram. 
2. In which part of the testis are the sperms produced?
3. State the functions of the parts labelled 1 and 3 in the diagram.
4. Name the cells that secrete Testosterone.
5. Draw a neat, labelled diagram of a sperm.

Answer

1. 1. Scrotum / Scrotal sac
   2. Sperm duct / Vas deferens
   3. Epididymis
2. Seminiferous tubules
3. 1.maintains a temperature of 2 to 3o C less than body temperature for the maturation of sperms.
   3. Stores the sperms till they become mature.
4. (Ley dig cells / Interstitial cells
5.