20,21

SECTION 3

The reproductive system

Use the clues to fili in the missing letters in the following terms below.

1 Aller billi), secretions from this feed the baby.

A liny mass of cells which grows in the wali of the uterus.

B I IIIs produces the greater part of the semen.

4 l tnę of a pair where female germ cells are produced. h Ule expulsion of a maturę oocyte into the peritoneal cavity.

I ()iu“ of a pair of tubes which carry sperm.

I lu* chamber where a new individual develops.

I    The production of milk.

U I ylng in the scrotum, they produce sperm.

10 The result of this is a zygotę. •

II    The channel through which a baby is born.

B II Ileś at the centre of the areola.

19 li is erectile during copulation.

14 1‘lie limę when teenagers become sexually maturę.

19 Ihe breakdown and expulsion of the lining of the uterus once a month.

10 terlllization takes place here.

I / I he period of nine months during which a new individual develops.

1 fl When the menstrual cycle ceases in women of 45-55 years of age.