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Biology > The Heart and the Function of the Blood vessels > Flashcards

The Heart and the Function of the Blood vessels Flashcards

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1
Q

What are the three types of Vessels ?

A

Arteries

Capillaries

Vein

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2
Q

What is the Function of Circuit 1 ?

A

To take blood from the lungs to the Heart

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3
Q

What is the function of Circuit 2 ?

A

To take blood from the Heart to all around the Body

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4
Q

Artery ?

A

Thick layer of elastic fibre and muscle

Smooth inner lining

Narrow central tube

Blood moves along arteries due to the pressure created by the pumping of the Heart

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5
Q

Capillary ?

A

Single cell thick

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6
Q

Vein ?

A

Thin layer of elastic fibre and muscle

smooth inner lining

wide central tube

Blood pressure very low there is no pressure created by the heart. There are valves to prevent back flow

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7
Q

What is the Job of the Artery ?

A

Take blood away from the Heart

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8
Q

What is the job of the Capillaries ?

A

Act as a exchange surface

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9
Q

What is the Job of the Veins ?

A

Take blood into the Heart

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10
Q

Lumen ?

A

The inside space of a tubular structure

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11
Q

What is the Pressure like in a Vein ?

A

Consistent but low

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12
Q

What is the pressure like in a capillary ?

A

High at start but low at the end

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13
Q

What is the pressure like in an Artery ?

A

High

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14
Q

Muscle wall of a Artery ?

A

Thick Muscle

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15
Q

Muscle wall of a Vein ?

A

Thin muscle

Elastic fibres

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16
Q

Muscle wall capillary wall ?

A

1 cell cell thick

17
Q

Is there oxygenation in veins ?

A

No

18
Q

Is there oxygenation in Artery’s ?

A

Yes

19
Q

Why are capillaries only one cell thick ?

A

They are only one cell thick because so that diffusion can happen

In a network they have a large surface area for exchange.

20
Q

How is blood flow caused in veins

A

Contracting skeletal muscle

21
Q

What are the two upper chambers in the Heart ?

A

Atrium

22
Q

What are the two lower cambers called in the Heart ?

A

Ventricles

23
Q

What is the Job of the Right hand side of the Heart ?

A

Gets blood from the body and pumps it to the lungs

24
Q

What is the job of the left hand side ?

A

Gets blood from the lungs and pumps it around the body

25
Q

What happens to your heart rate when you exercise ?

A

Your heart rate will increase and more oxygen and glucose will need to go to the respiratory cells

26
Q

What is in your blood ?

A

55% Plasma

1% white blood cells and platelets

45% Red blood cells

27
Q

What is plasma ?

A

Dissolved nutrients

waste

water

Biology (31 decks)

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