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Biology > The Circulatory System > Flashcards

The Circulatory System Flashcards

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1
Q

Right side heart

A

Deoxygenated, low pressure

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2
Q

Left side heart

A

Oxygenated, high pressure

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3
Q

Pericardium

A

Prevents friction when heart contracts

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4
Q

Heart halved by thick wall

A

Septum

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5
Q

Upper chamber

A

Atrium

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6
Q

Lower chamber

A

Ventricle

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7
Q

Atrium

A

Collects blood towards heart

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8
Q

Ventricle

A

Pumps blood away from heart

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9
Q

Tricuspid valve

A

Right side

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10
Q

Bicuspid

A

Left side

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11
Q

Endocardium

A

Lines four chambers - enhances blood flow

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12
Q

Diastole phase

A

Heart rest , fills blood

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13
Q

Systole phase

A

Ventricles contract - pump blood to arteries

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14
Q

Arteries

A

Thick muscle + elastic fibres, blood away from heart

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15
Q

Veins

A

Thin muscle + elastic fibres, blood back to heart

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16
Q

Capillaries

A

One cell layer thick, go to every cell in body

17
Q

Coronary arteries

A

Carry oxygenated blood to heart muscle

18
Q

Respiration needs:

A

Glucose + oxygen

19
Q

Red blood cells

A

No nucleus, haemoglobin, biconcave

20
Q

White cells

A

Have nucleas

21
Q

Phagocytes

A

Engulf/swallow pathogens

22
Q

Lymphocytes

A

Make antibodies

23
Q

Platelets

A

Cell fragments, made in bone marrow, hardens to make scab

Biology (8 decks)

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