Page 17 - Health & Physical edu- 8

h. Penis

The penis is formed of erectile tissues. This is of cylindrical shape. It consists of
three parts. They are root, body and glans penis. The top of penis is of triangular
shape called glans penis. The covering skin at the top of penis is called foreskin.
Sexual intercourse, insertion of sperm into the vagina, urination, etc. are the basic

functions of penis. Urethra opens of the tip of glans penis.

Activity

Sketch the figures of female and male reproductive systems and discuss their
functions with each other.

Summary

- The process of simultaneous functions of heart, blood and blood vessels
in human body is called blood circulation system. This system takes all the
nutrients, oxygen, hormones and enzymes to the cells.

- The organs in our body that produce various liquids and hormones are called
glands. The system formed of these organs is called glandular system.

- The internal and external activities of all systems of our body are controlled

and regulated by the nervous system.

- The process of collective functions of all the organs that are responsible for
reproduction is called reproductive system.

Exercises

1. Give very short answer to the following questions.

a. What are the organs that take part in blood circulation system?

b. What are the types of blood vessels? Write their names.

c. Which hormones are produced by thyroid gland?

Health & Physical Education, Class-8 13