5023574
Questão 1
Questão
Platelets are broken up bits of cells
Responda
- True
- False
Questão 2
Questão
Which of these following statements is incorrect
Responda
-
Cardiac muscles works continuously in response to signals from an area of the heart called pacemaker.
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Oxygen is carried to cells as oxyhaemoglobin.
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There are about 10 million red blood cells in one drop of blood.
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The average-sized adult has 5 litres of blood.
Questão 3
Questão
A blood clot in the blood vessels of the heart can cause [blank_start]angina[blank_end] and [blank_start]heart attack[blank_end].
Responda
-
angina
-
heart attack
Questão 4
Questão
A blood contains
Responda
-
Red blood cells
-
White blood cells
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Platelets
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Plasma
Questão 5
Questão
Plasma is a clear yellowish liquid found in the stomach which is 90% water and 10% dissolved materials.
Responda
- True
- False
Questão 6
Questão
Oxygenated blood means blood rich in oxygen
Responda
- True
- False
Questão 7
Questão
Three main phases of a heartbeat
Responda
-
The two atria contract, pushing blood down into the ventricles.
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The heart muscle relaxes and the atria fill with blood.
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The ventricles contract, forcing blood out of the heart to the body and lungs.
Questão 8
Questão
[blank_start]Cholesterol[blank_end] is a type of fat that is part of all animal cells. When cholesterol builds up in [blank_start]coronary arteries[blank_end], blood flow to the heart muscles reduced. This also means that oxygen supply is reduced.
Responda
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Cholesterol
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coronary arteries
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capillaries
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plasma
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Unsaturated fat
Questão 9
Questão
The heart has [blank_start]four chambers[blank_end]. Two of them collect blood from the [blank_start]lungs[blank_end] and pump it round the body. The other two collect blood from the [blank_start]body[blank_end] and pump it to the lungs.
Responda
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four chambers
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lungs
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body
Questão 10
Questão
There are three types of blood vessels
Responda
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Capillaries
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Arteries
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Veins
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Atria
Questão 11
Questão
[blank_start]Veins[blank_end] carry blood back to the heart. [blank_start]Arteries[blank_end] carry blood away from the heart. [blank_start]Capillaries[blank_end] are the finest of the blood vessel.
Responda
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Veins
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Arteries
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Capillaries
Questão 12
Questão
Haemoglobin is a green pigment that gives the colour of plants
Responda
- True
- False
Questão 13
Questão
[blank_start]Angina[blank_end] is a condition of lacking oxygen to the heart muscle.
Responda
-
Angina
Questão 14
Questão
There are only about 400 000 [blank_start]white blood cells[blank_end] in a drop of blood.
Responda
-
white blood cells
Questão 15
Questão
Red blood cells, white blood cells and platelets are condensed in plasma.
Responda
- True
- False
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