Page 17 - ...........

g. Urethra
Urethra is a narrow tube that begins at the lower opening of the
bladder and extends to the urethral orifice.It is about 18 to 20 cm in
length. The main function of the urethra isto expel the urine and the
sperm out of the body.

h. Penis

The penis is an external organ of the male reproductive system. It is
composed of erectile tissues so that it becomes enlarged, hardened,
and erected during sexual stimulation. It returns to its normal position
after ejaculation of semen. It is sometimes found erected in the
morning at the time of getting up; it is normal. The main function of
the penis is to take part in sexual intercourse and deliver the semen
into the vagina. It allows for the excretion of urine.

Activity 1.2

Manage the two paper boxes; one for male and the next for female
reproductive organs. Ask the students to write their queries related
to male and female reproductive organs in separate pieces of paper
and drop their queries in the respective boxes. Pick out the queries
one by one from the boxes and try to address their queries with the
help of friends and the teacher.

Exercise

1. Match the organs with their functions.

Organ Function

a. cerebrum i. reflex action

b. medulla oblongata ii. sperm and testosterone production

c. pineal gland ni. reasoning

d. pancreas iv. melatonin production

e. testes v. insulin production
vi. maintain the balance of the body

llanllh, Pbysit:nl and Crnnliva arl.<i, grndu 8 13