Describe the structure of human stomach.

Describe the structure of human spermatozoan with a diagram.

(a) Give a schematic representation showing the events of spermatogenesis in human male. (b) Describe the structure of a human sperm.

Describe the structure of human heart.

Describe the structure of human female reproductive system with a neat labelled diagram

Describe the structure of human excertory system with suitable diagram. Add a note on the process of urine formation.