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G3 Sec 2 Science > 14 Human Digestive System > Flashcards

14 Human Digestive System Flashcards

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1
Q

What are the 3 main types of nutrients in the food we eat?

A

1) carbohydrates
2) proteins
3) fats

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2
Q

What is digestion?

A

The breaking down of large insoluble molecules of food into smaller soluble molecules of food.

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3
Q

Why is digestion important for our body?

A

Only digested food can be absorbed by our body.

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4
Q

What is the name of part A?

A

mouth

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5
Q

What are the functions of part A?

Part A is the mouth. There are 3 functions.

A

1) Physical digestion of food using the teeth to crush them into smaller pieces.
2) Partial chemical digestion of carbohydrates by carbohydrase.
3) Produces saliva to soften and lubricate food for swallowing.

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6
Q

What is the name of part B?

A

gullet

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7
Q

What is the funtion of part B?

Part B is the gullet.

A

The gullet pushes food from mouth to stomach.

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8
Q

What is the name of part D?

A

stomach

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9
Q

What are the functions of part D?

Part D is the stomach. There are 3 functions.

A

1) It churns food into smaller pieces.
2) It produces gastric juices which contains protease to partially digest proteins.
3) Gastric juice contains hydrochloric acid which kills harmful microorganisms and allows protease to work.

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10
Q

What is the name of part F?

A

small intestines

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11
Q

What are the functions of part F?

Part F is the small intestines. There are 3 functions.

A

1) Fats is first digested here and also fully digested.
2) Partially digested carbohydrates and proteins are completely digested here.
3) All the digested nutrients are absorbed into the blood.

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12
Q

What is the name of part C?

A

large intestines

You cannot write big intestines.

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13
Q

What is the function of part C?

Part C is the large intestines.

A

Some water and mineral salts are absorbed by the large intestine.

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14
Q

What is the name of part G?

A

rectum

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15
Q

What is the function of part G?

Part G is the rectum.

A

Indigested food such as fiber and wastes form the faeces which is temporaily stored here.

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16
Q

What is the name of part E?

A

anus

17
Q

What is the function of part E?

Part E is the anus.

A

Faeces is released through here.

18
Q

In which part of the body is carbohydrates first digested?

A

mouth

19
Q

In which part of the body is carbohydrates completely digested?

A

small intestines

20
Q

In which part of the body is proteins first digested?

A

stomach

21
Q

In which part of the body is proteins completely digested?

A

small intestines

22
Q

In which part of the body is fats first digested?

A

small intestines

23
Q

In which part of the body is fats completely digested?

A

small intestines

24
Q

What is the name of the enzyme that digest carbohydrates?

A

carbohydrase

25
Q

What is the name of the enzyme that digest proteins?

A

protease

26
Q

What is the name of the enzyme that digest fats?

Another word for fats is lipids.

A

lipase

27
Q

What is the health problem caused if a body takes in to much carbohyrates or sugar?

A

diabetes

28
Q

What is diabetes?

A

A disease in which the sugar level in the blood is too high.

29
Q

What other health problems will diabetes lead to?

A

heart attack, kidney problems, high blood pressure, blindness, stroke etc.

30
Q

How much of a healthy plate should contain fruit and vegetabe?

A

half the plate.

31
Q

What are the 3 other problems that affect the digestive system of a human body?

A

1) constipation
2) food poisoning
3) gastric pains

32
Q

What is constipation?

A
33
Q

How do we avoid getting constipation?

A

3) eat food high in fiber
4) drink more water
5) have enough exercises

34
Q

What is gastric pain?

A

Pain caused by the swelling of the stomach lining.

35
Q

How do we avoid getting gastric pains?

A

1) do not skip meals
2) do not consume alcohol
3) do not take in too much oily food

36
Q

What are some of the bacteria that causes food poisoning?

A

1) cholera
2) salmonella

37
Q

What are the benefits of bacteria?

A

1) aids digestion of some food in the body
2) produces food such as coffee, chocolate, yogurts etc.

G3 Sec 2 Science (8 decks)

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