ACTIVITY "INTERNAL COORDINATION"

MATCH the two halves of each sentence.

1. The endocrine system                                                 a. produces insulin.
2. The thyroid gland                                                        b. produces the growth hormone.
3. Thyroxin enables the body                                           c. is responsible for growth and reproduction.
4. The pancreas                                                              d. to absorb nutrients.
5. Insulin controls                                                            e. produces thyroxin.
6. The pituitary gland                                                       f. the amount of sugar in the bloodstream.

ACTIVITY "THE NERVOUS SYSTEM"

Read the following definitions and write the words:

1.This part of the brain controls voluntary movements.
2. This part of the brain coordinates movements and maintains balance.
3. This part of the brain regulates internal organs.
4. These are the principal cells of the nervous system.
5.These are involuntary movements in reponse to external stimuli.

ACTIVITY " THE MUSCULAR SYSTEM"

TRUE OR FALSE? Decide if the following statements are true or false. If they are false,correct them.

1. When muscles contract, they become longer.
2. When muscles relax, they return to their original length and thickness.
3. Tendons connect the bones of a joint.
4. Antagonistic muscles perform the same action.
5. Arms bend at the elbow with a flexing movement.

ACTIVITY "THE BODY"

COMPREHENSION.Write the words of each sentence in the correct order to make sense:

1. body/ supports/ the / the/ skeleton
2. meet / places/ bones/ two / joints/ where / are / the
3. ends /the / of/ cartilage / covers/ bones/ the
4. flexible / strong / ligaments / are / tissue

INTERNAL COORDINATION

The nervous system controls and coordinates al the body´s internal processes, such as the beating of the heart and the digestion of food.
To do this, it controls involuntary muscles and the endocrine system.

INVOLUNTARY MUSCLES

INVOLUNTARY MUSCLES work automatically.
We cannot control them with our decisions.

The body needs involuntary muscles in order to function correctly.

THE ENDOCRINE SYSTEM

The endocrine system is responsible for functions such as growth and reproduction.

It consists of endocrine glands, which secrete substances called hormones into the bloodstream.