tetest 2 real

Question 1

volume of blood

Answer 1

4-6 litres

Question 2

what to do to separate blood’s components

Answer 2

centrifugation

Question 3

steps of centrifugation

Answer 3

1. fresh blood in a tube + anticoagulant
2. put in centrifuge (500rpm)
3. result is separation between plasma, white blood and red blood cells

Question 4

what does the blood consist of after the centrifuge

Answer 4

plasma 55%
white blood cells <1%
red blood cells 45%

Question 5

plasma composition

Answer 5

1. water
2. proteins
3. nutrients
4. hormones
5. respiratory gases
6. waste products

Question 6

plasma function

Answer 6

distribution of heat maintenance of ph

Question 7

erythrocytes

Answer 7

-red blood cells
-7 micro meters dia.
-2 and 1

Question 8

rbc

Answer 8

-round
-biconcave disc
-number of cells per ml 5 10*9
-** 3 months lifetime **
-transport of oxygen
-produced by cells in the bone marrow of certain bones

Question 9

leucocytes

Answer 9

-monocycle
-lymphocytes
-granulocytes

Question 10

too much salt

Answer 10

high blood pressure
-can cause water to be drawn into blood and blood pressure to rise
-this will damage delicate blood vessels including those in the brain

Question 11

monocycle

Answer 11

-kidney shaped nucleus
-17ym
-immunity
-spherical shape

Question 12

lymphocytes

Answer 12

-round spherical nucleus
-spherical shape
-8 10*6
-immunity

Question 13

granulocytes

Answer 13

-multi lobed nucleus
-13ym
-spherical shape

Question 14

thrombocytes

Answer 14

-platelets
-3ym
-cell fragments
-various shapes
-no nucleus
-2.5 10*8
- last 5-10 days
-involved in blood clotting

Question 15

Ingestion

Answer 15

Nutrition begin when food and drink are taken into the body through the mouth

Question 16

absorption

Answer 16

Small digested food molecules and ions cross the wall of the intestine into the bloodstream or lymph

Question 17

assimilation

Answer 17

Digested food is moved into the cells of the body where they become part of the cells and re used for energy, growth and repair.