Blood, Heart

Question 0

Atria -gravity vs pumping

Answer 0

80% of blood falls from gravity

20% of blood is pumped into ventricle

Question 1

Atria , blood comes from ?

Answer 1

2 upper chambers , and blood enters atria from Veins always!

Question 2

Ventricles ?blood comes from?

Answer 2

2 larger lower chambers , blood is always received from atria and then always pumps blood into arteries

Question 3

Ventricles- are pressure generators because ?

Answer 3

High pressure to low pressure always

Question 4

Once blood is in ventricles it pumps blood into —— and —–

Answer 4

Arteries ….. And twist to pump blood

Question 5

Heart valves——

Answer 5

Prevent backflow of blood

Question 6

R&L atrioventricular valves allow blood to flow into ?

Answer 6

Ventricles

Question 7

Atrioventricular valves close when —

Answer 7

Ventricles contract

Question 8

Semilunar outlet valves let blood out of ——– into —-?

Answer 8

Ventricles and into arteries

Question 9

Semilunar outlet valves close when —- —–? Preventing ?

Answer 9

Ventricles relax and prevents backflow from arteries

Question 10

Arteries are vessels that ?

Answer 10

Carry blood AWAY from Heart !!

Question 11

Veins always carry blood —-?

Answer 11

TOWAaRDs the heart

Question 12

Systemic circuit is controlled by the — side where blood flows from — to —/

Answer 12

Left side —.. Head to toe

Question 13

Arteries..in systemic circuit carries O2 —-and CO2 —blood to all tissues of blood

Answer 13

O2 rich and CO2 poor to tissues

Question 14

Veins .. In systemic circuit carries O2 —, CO2 —– back to right side

Answer 14

O2 poor and CO2 rich back to right side of heart

Question 15

Pulmonary circuit is controlled by the —- —– of heart and pumps blood to —– and back to — side

Answer 15

Right side of heart ,, pumps blood to lungs and back to left side

Question 16

Arteries .. In pulmonary circuit carry O2 — and CO2 —- blood to lungs

Answer 16

O2 poor CO2 rich blood to lungs

Question 17

Veins .. In pulmonary circuit carries O2 rich CO2 — blood back to — atria

Answer 17

Veins O2 rich CO2 poor blood to left atria

Question 18

Cardiac muscle cells – what does Purkinje fibers do?

Answer 18

This signal cardiac muscles to contract - part of electrical conduction

Question 19

Gap junctions are ?

Answer 19

Is where electrical connects 2 cardiac muscles cells

Question 20

Syncitium is where many ?

Answer 20

Many cells work together as a single unit

Question 21

Cardiac muscles cells are auto-rhythmic ?

Answer 21

One contracts all contract

Question 22

Cardiac muscle cells metabolize —— ?

Answer 22

Aerobically - extract 70% of O2 from coronary arteries

Question 23

Cardiac muscle cells use — for fuel source not —?

Answer 23

Lipid fuel source - do not glucose

Question 24

Intermittent blood supply ?

Answer 24

24 hours

Question 25

Cardiac AP this is ?

Answer 25

The electrical activity of AP in a heart cell

Question 26

Phase 0- Na+?

Answer 26

Sodium enters the cardiac cell and DEPLORIZES the cell (rising phase)

Sodium is mostly flowing thru GAO junctions