The heart and circulation Flashcards
1
Q
what are the components of blood
A
plasma: yellow liquid and dissolved substances that has glucose and other nutrients
White Cells: fights diseases
Red cells: carries oxygen
Platelets: sticky fragments of cells that stick together in cuts and make tiny fibers. red cells get trapped and form a bloodclot that turns into a scab
2
Q
what do antibodies do
A
chemicals that kills germs
3
Q
what kind of blood cell has a nucleus
A
white
4
Q
how many red cells are found in each drop of blood
A
5 million
5
Q
what gives the cells their red colour
A
red haemoglobin
6
Q
what factors affect blood pressure
A
stress
diet
lifestyle
hereditary problems
