blood Flashcards
1
Q
what are the two functions of blood?
A
transport and regulation
2
Q
what does the blood transport?
A
- nutrients (amino and fatty acids)
- waste products
- hormones and enzymes
- oxygen
3
Q
what does the blood regulate?
A
- blood clotting
- defence against infection
4
Q
what is the purpose of plasma in the blood?
A
- allows transport
- contains fibrin for blood clotting
- contains carbonic acid for maintaining blood pH
5
Q
what is an erythrocyte?
A
- a red blood cell
- most numerous blood cell in the body
6
Q
what is the function of erythrocytes?
A
to transport oxygen
7
Q
what gives erythrocytes their red pigment?
A
heamoglobin
8
Q
what is heamoglobin responsible for?
A
delivery of oxygen to the tissues
(1 heamoglobin molecule contains 4 oxygen molecules)
9
Q
what is a leukocyte?
A
a white blood cell
10
Q
what are the 4 types of leukocytes?
A
- neutrophils
- lymphocytes
- eosinophils
- monocytes
11
Q
what is the neutrophils roles?
A
engulfs microbes and bacteria via “phagacytosis”
12
Q
what is the lymphocytes roles?
A
- responsible for immune response
- involved in production of antibodies
13
Q
what is the eosinophils roles?
A
- regulation of allergic and inflammatory processes
- secrete enzymes that inactivate histamine
- phagacytosis of larger molecules
14
Q
what are the monocytes roles?
A
kill microbes and bacteria
15
Q
what are thrombocytes?
A
platelets
