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Biology - 6th Year > The Heart > Flashcards

The Heart Flashcards

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1
Q

Location

A

Between the lungs, slightly to the left side of the thorax above the diaphragm

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2
Q

Function

A

Pump blood around the body

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3
Q

Structure

A

Hallow structure made of cardiac muscle surrounded by pericardium

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4
Q

Pericardium

A

Prevents friction

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5
Q

The heart wall is made of

A

Cardiac muscle

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6
Q

What does not fatigue

A

The cardiac muscle

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7
Q

Vena cava receives

A

Deoxygenated blood from the body

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8
Q

Pulmonary artery pumps

A

Deoxygenated blood to lungs

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9
Q

Pulmonary vein receives

A

oxygenated blood from the lungs

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10
Q

Aorta pumps

A

Oxygenated blood to the whole body

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11
Q

Pulse

A

The contraction of an artery due to the pumping of the heart

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12
Q

Average pulse rate beats per minute is

A

72

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13
Q

Blood pressure

A

The force exerted by the blood against the walls of the blood vessels

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14
Q

What happens to the blood pressure as it passes from arteries to veins

A

It drops the

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15
Q

Effects of smoking on the circulation system

A

Nicotine increases heart rate and blood pressure

Other chemicals in Tabasco increased blood clots

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16
Q

High intake of fat causes

A

Increase if cholesterol

17
Q

Cholesterol

A

Block of arteries leading to strokes of heart attack

18
Q

High salt intake

A

Raises blood pressure

19
Q

Effect of exercise

A

Strengthens heart

Increased ability to transport oxygen

20
Q

What is heartbeat controlled by

A

Pacemaker nodes

21
Q

What does the sa node initiate

A

A wave of muscular contraction which causes the atria to contract

22
Q

Systole is the

A

Heart muscle contracting

23
Q

Diastole is the

A

Heart muscle relaxing

24
Q

What supplies oxygen to the cardiac muscle

A

Coronary arteries

Biology - 6th Year (21 decks)

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