The Circulatory System Flashcards by Kate Herselman

Q

Right side heart

A

Deoxygenated, low pressure

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Q

Left side heart

A

Oxygenated, high pressure

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Q

Pericardium

A

Prevents friction when heart contracts

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Q

Heart halved by thick wall

A

Septum

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Q

Upper chamber

A

Atrium

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Q

Lower chamber

A

Ventricle

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Q

Atrium

A

Collects blood towards heart

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Q

Ventricle

A

Pumps blood away from heart

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Q

Tricuspid valve

A

Right side

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Q

Bicuspid

A

Left side

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Q

Endocardium

A

Lines four chambers - enhances blood flow

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Q

Diastole phase

A

Heart rest , fills blood

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Q

Systole phase

A

Ventricles contract - pump blood to arteries

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Q

Arteries

A

Thick muscle + elastic fibres, blood away from heart

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Q

Veins

A

Thin muscle + elastic fibres, blood back to heart

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Q

Capillaries

A

One cell layer thick, go to every cell in body

Q

Coronary arteries

A

Carry oxygenated blood to heart muscle

Q

Respiration needs:

A

Glucose + oxygen

Q

Red blood cells

A

No nucleus, haemoglobin, biconcave

Q

White cells

A

Have nucleas

Q

Phagocytes

A

Engulf/swallow pathogens

Q

Lymphocytes

A

Make antibodies

Q

Platelets

A

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