Circulatory System Test Flashcards

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1
Q

Explain why it is not accurate to describe blood as a red liquid

A

Red blood cells are the reason your blood appears red however it’s components are different colours.

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2
Q

State three functions of the blood

A

Transport
Protection
Regulation

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3
Q

State the function of arteries

A

Carry oxygenated blood away from the heart

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4
Q

State the function of veins

A

Return deoxygenated blood to the heart

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5
Q

State the function of the capillaries

A

Bring nutrients and oxygen to tissues and remove waste products

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6
Q

State the function of the heart valves

A

Blood passes through them before leaving each chamber of the heart

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7
Q

State the function of the coronary arteries

A

Supply blood to the heart muscle

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8
Q

What is a stent?

A

A splint placed temporarily inside a duct, canal, or blood vessel to aid healing or relieve an obstruction.

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9
Q

What is a natural pacemaker?

A

Controls the heart rate by sending electrical signals through the heart muscle, making the heart contract and pump blood throughout the body

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10
Q

How does an artificial pacemaker work?

A

The pulse generator sends electrical impulses to the heart to help it pump properly

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11
Q

Explain how a leaky heart valve can cause health issues

A

Can cause the heart to work harder and not pump the same amount of blood

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12
Q

Describe how air is moved into and out of your lungs

A

As the diaphragm contracts, it flattens out, moving towards an abdominal cavity. This causes an increase in the size of the chest cavity, thus creating a vacuum into which air is drawn in. As ribs fall and diaphragm moves up, volume of the chest gets smaller and air leaves the lungs.

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13
Q

What is a tumour?

A

A swelling of a part of the body, generally without inflammation, caused by an abnormal growth of tissue, either belign or malignant

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14
Q

What is the difference between benign and malignant tumours?

A

Benign is noncancerous and won’t invade nearby tissue

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