Components of blood

Question 1

define the circulatory system

Answer 1

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

Question 2

What are the components of blood

Answer 2

-plasma

-red blood cells

-white blood cells

-platelets

Question 3

role of plasma

Answer 3

transports gasses, nutrients, waste products and other blood components

Question 4

role of red blood cells

Answer 4

contain haemoglobin and transport oxygen to the body’s tissued

Question 5

role of white blood cells

Answer 5

attack pathogens by engulfing them or by producing anti bodies

Question 6

role of platelets

Answer 6

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

Question 7

describe the function and structure of arteries

Answer 7

-transport oxygenated blood away from the heart at high pressure

-thick walls
-narrow lumen

Question 8

describe the structure and function of veins

Answer 8

-transport deoxygenated blood towards the heart at low pressure

-wide lumen
-contains valves

Question 9

describe the structure and function of capillaries

Answer 9

-tiny blood vessels that surround the body’s tissues

-walls are one cell thick
-extremely narrow lumen