How do female mammals
produce milk?
Mammals are those living beings whose females produce
milk to suckle their young. They are warm-blooded and have well developed
brains. They gibe birth to young ones and feed them with their own milk.
Mammals breathe through lungs and their bodies are covered with hair.
Internal Structure of Mammary Glands
Milk in the female’s mammals is produced by mammary glands
that are located in the breasts. They are bag shaped and big in size. Shortly
before the birth of her young hormonal changes in the mothers result in
increased development of the mammary glands. They produce large drops of fats
which when mixed with fluids present in the breasts become milk. Corpus luteum
of the ovary also produces a hormone that helps in the process of milk
production. Most of female mammals have tears or nipples form which the young
can suck milk.
At present, there are about 4400 living species of
mammals grouped into 19 orders and about 120 families. They of course, differ
from one another in their bodies, shapes, sizes and habits. Most of them live
on land but some live in water and air also. For example, whales and the
dolphins are mammals, which live in water. And, the bat is a mammal that flies
in the air. They exist in different climatic conditions- hot, cold, dry or
humid. Most mammals give birth to less than 10 young ones a year. Humans
usually give birth to only one baby at a time. Apart from human beings, cow,
buffalo, sheep, goat, etc. also come under the category of mammals.
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