bio3 (HAHA I HATE THIS)

Question 1

what prevents the backflow of blood from the ventricles into the atria?

Answer 1

bicuspid and mitral valves (AV valves)

Question 2

whats the average resting heart rate for an adult

Answer 2

60-80bpm

Question 3

what controls the heart rate

Answer 3

SA node / pacemaker

Question 4

what is the heart muscle called

Answer 4

myocardium

Question 5

what is the space inside a blood vessel called?

Answer 5

lumen

Question 6

what is the pulse?

Answer 6

heart contraction felt in arteries

Question 7

what disease causes the hardening of the arteries?

Answer 7

arthero sclerosis = higher blood pressue, less stretch

Question 8

what happens in capillaries

Answer 8

nutrients come out, waste comes in

Question 9

why is blood classified a tissue

Answer 9

roughly half the components are solid cells

Question 10

how long does an eRyThRoCyTe live

Answer 10

120 days

Question 11

what is anemia?

Answer 11

low iron

Question 12

what vitamin is used in blood clotting? what does it do?

Answer 12

vitamin K, activiates prothrombin enzymes with the help of calcium

Question 13

what is a vascular spasm?

Answer 13

first step of a blood clot. Activates platelets.

Question 14

name the disease that causes blood to not clot properly

Answer 14

hemphelia

Question 15

what is the “sErUm FrAcTiOn” of blood?

Answer 15

plasma (BRUH)

Question 16

describe what happens when someone with A blood is given B blood?

Answer 16

Agglutination due to B antibodies reacting with B antigens

Question 17

where are the vocal cords?

Answer 17

the larynx AAAAAAAA

Question 18

how is breathing rate controlled?

Answer 18

medulla oblongata detects co2 in blood

Question 19

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Answer 19

True.