1
Q
what is the blood comprised off?
A
erythrocytes (red blood cells) leucocytes (white blood cells) lymphocytes (t-cells and b-cells) neutrophils monocytes platelets plasma
2
Q
how are erythrocytes adapted
A
- bi concave shape
- round
- flattened
- central indentation to maximise the surface area for oxygen
- small and flexible allowing them to enter narrow capillaries
3
Q
leucocytes function
A
role in defence and immunity
4
Q
erythrocytes function
A
transport oxygen and carbon dioxide
5
Q
lymphocytes function
A
T-cells (destroys body’s own cells that have been taken over by diseases)
B-cells (destroys antigens)
6
Q
neutrophils function
A
protect the body against bacterial infection
7
Q
monocytes function
A
part of immune system, attack certain germs
8
Q
platelets function
A
helps blood clots form
9
Q
plasma function
A
transports oxygen glucose carbon dioxide
10
Q
what is the largest component of blood
A
plasma
11
Q
what are haemoglobin
A
red protein responsible for transporting oxygen in the blood
