Blood

Question 1

blood consists of

Answer 1

formed elements and plasma

Question 2

plasma is

Answer 2

55%

Question 3

formed elements

Answer 3

45%

Question 4

plasma composed of

Answer 4

92% water, 6% proteins ( albumin, globulins, transferrin and fibrinogen) and ions, nutrients, gases, waste

Question 5

formed elements

Answer 5

majority RBC, then WBC, and platlets

Question 6

major contributor to colloid pressure of plasma

Answer 6

albumin

Question 7

fibrinogen function

Answer 7

form fibre threads to blood clot

Question 8

where are plasma proteins produced

Answer 8

liver

Question 9

what is spectrin

Answer 9

cytoskeleton protein that binds to cytosolic side of membrane protein t, responsible for elastic strength in RBC

Question 10

maturation of RBC takes

Answer 10

4 days

Question 11

all blood cells are derived from

Answer 11

hematopoietic stem cells (hemocytoblasts)

Question 12

stages of RBC

Answer 12

hemocytoblast –> basophilic erythroblasts, polychromatic erythroblasts, then lose nun to become reticulocytes

Question 13

what creates platlets

Answer 13

fragments of egakaryocytes

Question 14

leukopenia

Answer 14

reduction of WBC

Question 15

reduction of RBC

Answer 15

aplastic anemia

Question 16

destruction of RBC

Answer 16

in spleen and liver –> phagocytosis

Question 17

PCV

Answer 17

% of RBC

Question 18

normal democrat

Answer 18

45% men, 42% women

Question 19

polycythemia

Answer 19

high PCV

Question 20

neutrophils

Answer 20

phagocytic cells

migrate out of BV and enter tissue

Question 21

eosinophils

Answer 21

protect against parasites, and allergies, release anti-inflammatory substances

Question 22

basophils

Answer 22

histamine and heparin release

Question 23

hemostasis

Answer 23

stoppage of blood flow

- platelets release platelet factors, attract more and clog wound

Question 24

blood clotting mechanism

Answer 24

1. release clotting factors
2. formation of thrombin by prothrombin factor and calcium acting on prothrombin
3. thrombin forming fibrin from fibrinogen

Question 25

how is blood type named

Answer 25

according to the type of antigen on the RBC

Question 26

anti- RH antibodies can appear when?

Answer 26

if mother is Rh negative, comes in contact with RH positive RBC, mother will produce anti RH antibosies, can be fatal if she has another RH positive baby