unit 6; hematology

Question 1

what is bloods main task.

Answer 1

gas exchange

Question 2

what makes blood red

Answer 2

hemoglobin

Question 3

what is the composition of blood (%)

Answer 3

55% plasma/serum and 45% formed elements

Question 4

red blood cell production occurs where

Answer 4

bone marrow for adults.

Question 5

why is the total number of rbc generally constant

Answer 5

negative feedback loop

Question 6

what two things are needed for DNA synthesis

Answer 6

B12 and folic acid

Question 7

what is the order of normal development for rbc

Answer 7

stem cell, proerythroblast, normoblast, reticulocyte, mature rbc

Question 8

do protein amino acids make up globin (true or false)

Answer 8

true

Question 9

what is heme decomposed into

Answer 9

iron or biliverdin

Question 10

how does the body recycle iron

Answer 10

iron that is bound by transferrin is put into the blood, which is then transported to the liver, it is later stored in the “F + H” warehouse where ferritin and hemosiderin use it later.

Question 11

what do platelets do

Answer 11

help the blood to clot

Question 12

are antigens on surface of red blood cell

Answer 12

yes

Question 13

are antibodies in the blood plasma

Answer 13

yes

Question 14

a persons plasma wont contain any antibodies that will bin to molecules that are a part of his or her body (true or false)

Answer 14

true

Question 15

Blood group A has what kin dof antigens and antibodies

Answer 15

A antigens
B antibodies

Question 16

blood group B has what kind of antigens and what kind of antibodies

Answer 16

B antigens and A antibodies

Question 17

blood group AB has what kind of antigens and what kind of antibodies

Answer 17

A and B antigens and NO A or B antibodies

Question 18

blood group O has what kind of antigens and what kind of antibodies

Answer 18

No A or B antigens and Both A and B antibodies

Question 19

who are the universal donors

Answer 19

TYPE O

Question 20

who are the universal recievers

Answer 20

TYPE AB

Question 21

what is hemostasis

Answer 21

stopping of bleeding

Question 22

what are three steps of hemostasis

Answer 22

blood vessel spasm, platelet plug formation, blood coagulation

Question 23

what is the difference between a clot, thrombus, and embolus

Answer 23

clot or thrombus is a “scab” essentially forming on the side of a vessel. If a clot forms abnormally in a vessel then it is a thrombus; however, if it dislodges then it is considered an embolus.

Question 24

what is the difference between an extrensic pathway and an intrinsic pathway

Answer 24

extrinsic is initiated by factors outside the blood vessel, while intristic is initiated by factors inside the blood vessel.

Question 25

what is the common pathway

Answer 25

prothrombin --> thrombin

Question 26

what are the most abundant dissolved substances in the blood plasma?

Answer 26

albumins, globulins, fibrinogens.

Question 27

what are the albumins responsible for

Answer 27

osmotic pressure of the blood and accounts for 60% of the plasma proteins.

Question 28

what do the globins do

Answer 28

transports lipids and fat-soluble vitamins; about36% of plasma proteins

Question 29

what is fibrinogen do

Answer 29

plays a role in blood coagulation; only 4%

Question 30

what are the most important blood gases

Answer 30

o2 and co2