Various harmful and unnecessary substances are formed in the human body. These substances enter the blood and then they are eliminated from the body by the excretory organs, namely the kidneys, the skin and the lungs, the latter pass out carbon dioxide and water vapour. Most of the body wastes, as you know, are eliminated in the urine by the urinary organs.
An excretory function is also performed by the skin. The skin is the cover of the body, it protects it from harmful external influence and serves at the same time as an excretory organ passing the sweat out.
Sweat is formed in tiny perspiration glands found in the skin. It consists of water in which substances similar to those in the urine are formed but in smaller quantities. The Evaporating of perspiration is known to cool the body and protect it from overheating.
3. Find English equivalents for these words
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4.Fill in the blanks with the given verbs
enter pass performs covers protects serve cools eliminate
1. The skin the body.
2. The evaporating of perspiration the body.
3. The lungs out the carbon dioxide and water vapour.
4. Harmful substances are formed in the body and the blood.
5. The skin an excretory function.
6. The excretory organs body wastes from the body.
7. The kidneys as excretory organs.
8. The skin the body from harmful external influence.
5.Make up the sentences using these words.
1. enter, various, the blood, substances, harmful.
2. wastes, the excretory, eliminate, organs, the body, from.
3. are, the kidneys, the lungs, excretory, the skin, organs.
4. the skin, excretory, protects, external, the body, from, influence, harmful.
5. out, passes, the sweat, the skin.
6. perspiration, are, there, glands, in the skin.
7. protects, overheating, the body, from, evaporating, of, perspiration.
6.Answer the questions.
1. What is formed in the body?
2. What organs eliminate harmful substances from the body?
3. What excretory organs do you know?
4. What organs pass out carbon dioxide?
5. What organs excrete most of the body wastes?
6. What functions does the skin perform?
7. How does the skin perform its functions?
8. Where is the sweat formed?
9. What process is known to cool the body?
10. What does the evaporating of perspiration protect the body from?
7.Complete the sentences using the text The Skin as an Excretory Organ.
1. The skin is one of the
2. The skin is the
3. The skin performs
4. The skin protects the body from
5. The skin passes
8.Fill in the gapsusing the text The Skin as an Excretory Organ.
1. The kidneys, the skin, the lungs are
2. They eliminate from the body.
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3. The lungs pass out
4. Most of the body wastes by the organs.
5. The skin also serves as
9.Correct the mistakes using the text The Skin as an Excretory Organ.
1. Various harmful and unnecessary substances are formed and eliminated from the body.
2. Harmful substances are eliminated by the digestive organs.
3. The kidneys pass out carbon dioxide and water vapour.
4. The skin covers the body and protects if from harmful external influence.
5. The skin passes out most of the body wastes.
6. The sweat is formed in tiny salivary glands.
7. The evaporating of perspiration cools the body.
10. Speak about the skin and its function
TOPIC 17. THE SENSES
1. Fill in the gaps with the missing remarks
Teacher: Good day. Nice to see you. As you know, people usually have senses.
But not everybody has a sense of humour. What senses do you think a medical worker should have?
Student: (sense of duty, humour, beauty, justice, gratitude, sympathy, responsibility, compassion, sixth sense)
Teacher: What senses do you have?
Student:
2.Look at the picture and say what five main senses are.
Five main senses are .
3.Read about senses and try your interpreters skills. Fill in the gaps with the proper names of the senses.
There are five main senses - touch, smell, taste, hearing and sight. These are the external sensory system, because they tell you about the world outside your body. Your senses tell you what is happening in the outside world. Your body's sense organs constantly send signals about what is happening outside and inside it to your control center - the brain.
_________________: The ability to detect and interpret odours. The organ of olfaction is the nose. It is a "chemical sense".
__________________: The ability to see - that is, to detect light waves and interpret them into the objects around us. The organ of vision is the eye.
__________________: The ability to detect and interpret chemical differences in items we put in the mouth, which is the organ of gustation. It is the other "chemical sense".
___________________: The ability to detect and interpret sound waves. The organ of audition is the ear.
___________________: The ability to perceive and interpret temperature, pressure and pain. The main organ of this sense is the skin, which is also the largest organ of the human body. However, there are also receptors located throughout the body.
Senses are all controlled by the Nervous System.
4.Match the idiomatic expressions with their definitions. Learn them
| 1. have at ones fingertips 2. hold ones tongue 3. not lift a finger 4. have a ready tongue 5. be all ears 6. in the twinkling of an eye 7. shut ones eyes to | 1. be very attentive 2. know something very well 3. keep something in secret 4. do nothing 5. very quickly 6. pretend not to see something 7. be talkative |
5. Make up a story using these idiomatic expressions
