The Heart Flashcards

1
Q

What is plasma

A

Is it a yellow liquid that carries red blood cells, white blood cells, and platelets

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2
Q

What do red blood cells do

A

They pick up oxygen from the air in your lungs and carry it to cells where it’s needed

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3
Q

Two red blood cell adaptations

A
  1. Packed with a red pigment called haemoglobin that binds to oxygen
  2. They have no nucleus, making more space for haemoglobin
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4
Q

White blood cell function

A

The body’s defence system against harmful microorganisms.

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5
Q

Platelets function

A

To help the blood clot at the site of a wound to prevent bleeding to death

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6
Q

The three different blood vessels

A

Arteries, veins and capillaries

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7
Q

Arteries function

A

Carry blood away from your heart to the organs of your body. It has a pulse

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8
Q

Veins function

A

Carry blood away from the organs towards your heart, the blood is usually low in oxygen so it has no pulse

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9
Q

Capillaries function

A

It enables substances like oxygen to diffuse out of your blood and into your cells

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10
Q

What are the walls of capillary atrety and veins like

A

Arteries- very thick
Vein- thinner walls than artery
Capillary- very narrow with very thin walls

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11
Q

What is the double circulatory system

A

One transport system carries blood from your heart to your lungs and back again. This allows substances like oxygen to be exchanged.
Another carries blood from your heart to all other organs and back again

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