EL LINCE PERDIDO. ACTIVIDAD DIA ANDALUCIA

BUSINESS SECTORS OF THE ECONOMY

HUMAN REPRODUCTION AND CHILDBIRTH

REPRODUCTION

THE FEMALE REPRODUCTIVE SYSTEM

The female reproductive system consists of several organs: The ovaries, the fallopian tubes, the uterus, the vagina and the vulva.

THE MALE REPRODUCIVE SYSTEM

Consists of the following organs: the testes, the sperm ducts, the prostate gland, the urethra and the penis.

SEX CELLS AND FERTILIZATION

Sex cells are an essential part of reproduction. They are produced in the reproductive system and are different in men and women.

Female sex cells are called ova. Male sex cells are called spermatozoa.

Fertilization occurs when a sperm cell joins with an egg cell. As a result os fertilization, a new cell, called a zygote, is formed. The zygote divides repeatedly into more cells, an all these new cells for an embryo.

PREGNANCY, BIRTH AND LACTATION.

Pregnancy is the period from the moment of fertilization until the birth of a baby. It lasts about nine months. Two main changes happen: The embryo is surrounded by a sac called the amnion that provides protection, a new organ, called the placenta, forms inside the uterus and provides nutriens and oxygen from the mother to the embryo.

Birth happens at the end of the pregnancy, when the baby comes out of the mother's body.

Lactation is the period when the mother's breasts produce milk. It happens after giving a birth.

HEALTHY HABITS

HEALTHY HABITS

• PHYSICAL ACTIVITY

It includes playing sports, walking, or using the stairs instead of the lift.

• GOOD POSTURE

The spinal column supports our back. A bad posture can deform our spinal column and can cause other problems.

• A HEALTHY DIET

Calcium and Vitamin D are required by our bones to grow. We can find them in milk, fish and green vegetables.

• SLEEP AND LEISURE

In orther to look after our nervous system, we need to sleep. Lack of sleep can affect growth and cause illmess.

SEXUAL CHARACTERISTICS AND THE REPRODUCTIVE SYSTEM

SEXUAL CHARACTERISTICS AND THE REPRODUCTIVE SYSTEM

Sexual characteristics are the physical differences that exist between men and women.

Are classified into:

• Primary sexual characteristics. These are the reproductive organs.
• Secondary sexual characteristics. These refer to other physical diferences between men and women for example facial hair in men and the develop of breasts in women.

PUBERTY

Puberty is the stage of life when reproductive organs become functional and sexondary sexual characteristics develop. Puberty may take place between the ages of 10 and 14 in girls, and 12 and 16 in boys. Puberty also causes emotional changes.

ACTIVITY 1 PAGE 25 (CORRECCIÓN)

SUMMRY. Copy and complete with these words:

We can represent the Earth as a globe or on maps. Maps are flat pictures that represent parts of the Earth. World maps show the whole of the Earth. Maps can be physical, political or thematic. On a map, there are labels, a scale and a compass rose.