blood

Question 1

the human body contains how much blood?

Answer 1

5L

Question 2

what are the components of blood? (and their percentages)

Answer 2

plasma (55%), rbc (45%), wbc (less than %1), platelets (less than 1%)

Question 3

what is plasma?

Answer 3

the liquid that transports blood cells (rbc, wbc, platelets) nutrients, antibodies, hormones and waste produced during cellular respiration.

Question 4

what happens to the urea?

Answer 4

it’s carried to the kidney for evacuation.

Question 5

what happens to carbon dioxide?

Answer 5

it’s carried to the lungs for evacuation.

Question 6

why do red blood cells have a biconcave shape? what would happen if they didn’t have this?

Answer 6

they need to be flexible in order to squeeze into the small/thin blood vessels (capilaries). if you have sickly cells they’ll be more of a banana/hook shake, this will make them get caught on the corners and form blood clots.

Question 7

why do our veins appear blue?

Answer 7

in our body there are the bloods that pick up O2 and the ones that pick up CO2. the ones that pick up O2 turn a bright firetruck red. the ones that pick up CO2 turn a dark wine red.

Question 8

what creatures have blue blood?

Answer 8

small spiders and lobsters.

Question 9

red blood cells contain what? (a protein)

Answer 9

hemoglobin which is a protein that helps transport CO2 and O2 and gives the blood it’s red colour.

Question 10

how long do red blood cells live for?

Answer 10

120 days.

Question 11

what is the main job of the rbc (red blood cells)?

Answer 11

to deliver oxygen to the rest of the body.

Question 12

do rbc do mitosis?

Answer 12

nope. they simply die off after 4 months. wbc eat them.

Question 13

where are rbc are produced?

Answer 13

in your bone marrow.

Question 14

what is hemoglobin?

Answer 14

a large protein molecule made mostly or iron.

Question 15

what is it more dangerous to cut/break? an artery or vein?

Answer 15

an artery.

Question 16

what is someone called if they don’t have functioning platelets?

Answer 16

a hemopheliac.

Question 17

what is the circulatory system made up of?

Answer 17

blood, blood vessels, the heart.

Question 18

what is the only liquid part of your blood?

Answer 18

the plasma.

Question 19

c6h12o6 + 6o2 → 6co2 + 6h2o is an example of what type of reaction?

Answer 19

photosynthesis?

Question 20

if a blood cell has only Rh antigens, what blood type is it?

Answer 20

o+

Question 21

what’s the difference between whole blood transfusions and platelet transfusions?

Answer 21

platelet transfusions is only the platelets being transfused.

Question 22

what is agglutination? how is it caused?

Answer 22

agglutination is when the blood forms clumps or thickens. it’s caused by, for example, the A antibodies in one type of blood attacking the A antigens in another type of blood.

Question 23

what are the different types of vaccines?

Answer 23

attenuated vaccines (weakened virus), inactivated vaccines (dead virus) and vaccines from genetic engineering (made from modifying the pathogen’s DNA and keeping the non dangerous genes).

Question 24

what is the lymphatic system?

Answer 24

the lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. the primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.

Question 25

what is the pulmonary system?

Answer 25

pulmonary circulation moves blood between the heart and the lungs. it transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. the oxygenated blood then flows back to the heart.

Question 26

what is the systemic system?

Answer 26

systemic circulation moves blood between the heart and the rest of the body.

Question 27

what is the job of wbc?

Answer 27

they protect the body, some neutralize pathogens (bacteria viruses) and others get rid of dead or damaged cells.

Question 28

what do platelets do?

Answer 28

they only live for about 10 days, they help in the coagulation process (forming scabs) by accumulating in the damaged area of a blood vessel. they produce fibrous filaments to help seal the wound.

Question 29

what does the heart do?

Answer 29

it pumps blood through the body.

Question 30

what is bigger, the right or left ventricle?

Answer 30

the left one.

Question 31

what do blood vessels do?

Answer 31

they are the channels that the blood travels through. they make up 2 closed systems of tubes that begin and end at the heart

Question 32

what is a normal blood pressure?

Answer 32

120-130/80-60

Question 33

what are capilaries?

Answer 33

small thin blood cells so fusion can happen between different substances.

Question 34

what’s the difference between arteries and veins?

Answer 34

arteries bring blood out of the heart, veins bring blood into the heart.

Question 35

do veins contain CO2 rich blood all the time?

Answer 35

no, only most of the time.

Question 36

what do the pulmonary arteries contain?

Answer 36

CO2 blood.

Question 37

why are there valves in our veins?

Answer 37

to help prevent back flow of the blood.

Question 38

what is blood pressure, how does it happen?

Answer 38

the particles pushing on the sides of the veins.

Question 39

what is hemogobin?

Answer 39

a protein made of iron.

Question 40

what is hemoglobin used for?

Answer 40

for red blood cells to carry o2 and co2 through.

Question 41

what are the organs involved in the lymphatic system?

Answer 41

the main ones are thymus, bone marrow, spleen tonsils. the less main ones are: lymph nodes, liver, heart, lungs, intestine.