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5. Answer the following questions.

1. Is the body dependent on the digestive system?

2. What will keep the digestive system healthy?

3. How can humans become infected with the tapeworm?

4. What symptoms have the individuals infected with a tapeworm?

5. Are the tapeworms a serious problem for the human health and digestive system? Why?

6. What factors can cause serious damage to the digestive system?

7. Can medications injure the organs of the digestive system?

8. Are teeth an important part of the digestive system? Why?

9. What minor irritations of the digestive system do you know?

6. Say whether the sentences are true or false.

  1. A healthy way of life will keep the digestive system healthy.

  2. Tapeworms are typically acquired from eating sweets.

  3. Most individuals infected with a tapeworm have no symptoms.

  4. Tapeworms are not treated with medication.

  5. Excessive alcohol and spicy food cannot cause serious damage to the diges­tive system.

  6. Medicines in pill or capsule form should always be taken with plenty of water.

  7. The best way to prevent tooth decay is to brush the teeth twice a week.

8. If any digestive problems persist, they should not be ignored and medical attention should be sought.

Nervous system

Тема 40. Нервова система: роль, структура, імпульс, синапси, рефлекс, типи нервів. Спинний мозок. Головний мозок.

I. Vocabulary

1. Read and learn the topical vocabulary.

neuron — нейрон myelin sheath — мієлінова оболонка

brain — мозок cerebrum — головний мозок

spinal cord — спинний мозок cerebral cortex — кора головного

(стрижень) мозку

meninx — оболонка мозку cerebrospinal fluid — спинномозкова

dendrites — дендрити (розгалужені рідина

відростки нервових клітин) synapse — синапс

cell nucleus — ядро клітини gyrus — звивина мозку

axon — аксон (відросток нервової fissure — щілина; борозна

клітини) sulcus — борозна

to carry the impulse away from ...thalamus — таламус, зоровий горбок

проводити імпульси від ... hypothalamus — гіпоталамус

2. Read and memorize some interesting facts about the brain.

1) Your brain uses 20 % of the oxygen that enters your bloodstream. The brain only makes up about 2 % of our body mass, yet consumes more oxygen than any other organ in the body, making it extremely susceptible to damage related to oxygen deprivation. So breathe deep to keep your brain happy.

2) Nerve impulses to and from the brain travel as fast as 170 miles per hour. Ever wonder how you can react so fast to things around you? It's due to the super-speedy movement of nerve impulses from your brain to the rest of your body and vice versa, bringing reactions at the speed of a high powered luxury sports car.

3) The brain itself cannot feel pain. While the brain might be the pain center when you cut your finger or burn yourself, the brain itself does not have pain receptors and cannot feel pain. That doesn't mean your head can't hurt. The brain is surrounded by loads of tissues, nerves and blood vessels that are plenty receptive to pain and can give you a pounding headache.

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