Components of blood Flashcards

1
Q

define the circulatory system

A

the body’s transport system consisting of the lungs, heart, blood vessels and blood

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2
Q

What are the components of blood

A

-plasma

-red blood cells

-white blood cells

-platelets

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3
Q

role of plasma

A

transports gasses, nutrients, waste products and other blood components

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4
Q

role of red blood cells

A

contain haemoglobin and transport oxygen to the body’s tissued

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5
Q

role of white blood cells

A

attack pathogens by engulfing them or by producing anti bodies

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6
Q

role of platelets

A

clot at an open wound to seal it and prevent excessive bleeding to prevent pathogens from entering the blood stream

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7
Q

describe the function and structure of arteries

A

-transport oxygenated blood away from the heart at high pressure

-thick walls
-narrow lumen

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8
Q

describe the structure and function of veins

A

-transport deoxygenated blood towards the heart at low pressure

-wide lumen
-contains valves

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9
Q

describe the structure and function of capillaries

A

-tiny blood vessels that surround the body’s tissues

-walls are one cell thick
-extremely narrow lumen

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