The Heart and Blood Flashcards
1
Q
what is blood?
A
- a tissue consisting of plasma in which blood cells, white blood cells and platelets are suspended
2
Q
plasma
A
- 55%
- pale, yellow fluid
- transports CO2, hormones and waste
3
Q
red blood cells
A
- 45%
- carries oxygen
- large SA
- no nucleus
- full of haemoglobin
4
Q
white blood cells
A
- <1%
- part of the immune system
- produce antibodies
- surround and engulf pathogens
5
Q
platelets
A
- <1%
- fragments of cells
- clump together to form blood clots
6
Q
right ventricle
A
pumps blood to the lungs where gas exchange takes place
7
Q
left ventricle
A
pumps blood around the rest of the body
8
Q
pacemaker
A
