Ex2L4 CVS

Question 1

Main function of respiratory system

Answer 1

Oxygenate blood

Vehicle for eliminating CO2

Question 2

Reason of oxygenating blood

Answer 2

Metabolism/ATP/producing heat

Question 3

Purpose of CVS system

Answer 3

Carry oxygen to cells in body, clear CO2/waste

Question 4

Renal system primary function

Answer 4

Maintain healthy parameter of bloodstream

Question 5

Cardio part of CVS

Answer 5

Pump

Question 6

Vascular portion of CVS

Answer 6

Blood transportation

Question 7

CVS system is a _____ system

Answer 7

Closed

Question 8

Right side of heart handles

Answer 8

Deoxygenated blood

Question 9

Left side of heart handles

Answer 9

Oxygenated blood

Question 10

Gas exchange occurs in

Answer 10

Pulmonary capillaries

Question 11

Gases exchanged in pulmonary circulation

Answer 11

Oxygen

Carbon dioxide

Question 12

Arteries and veins are named solely based on direction of flow with respect to ______

Answer 12

Heart

Question 13

Pulmonary arteries and veins are ______ with regards to oxygenation status of systemic veins/arteries

Answer 13

Opposite

Question 14

Reason LV muscle is thicker than RV

Answer 14

Left side has higher force (body vessels) vs. pulmonary vessels

Question 15

Each cardiac cycle consists of

Answer 15

Atria pushes blood into ventricle, ventricle contracts - pushes blood out

Question 16

Time it takes for blood to move from RA->LV->aorta

Answer 16

2 cardiac cycles

Question 17

Heart pumps entire body blood volume

Answer 17

Every minute at rest

Question 18

Blood supply that maintains heart tissue

Answer 18

Coronary circulation

*canNOT pull O2 from Atria/ventricles

Question 19

Valves are located

Answer 19

• between A->V

- between V—> arteries

Question 20

Reason AV valves are structured heavily

Answer 20

Manage workload of heart - ensures one way flow of blood

Question 21

Structures of AV valves

Answer 21

1. Leaflets

2. Chordae tendonae - connects leaflets to papillary muscles

Question 22

Semilunar valves characteristic

Answer 22

Self-sealing to prevent back flow

*pathology=unable to pass blood thru —> stenosis

Question 23

Pericardial sac

Answer 23

Serous membrane surrounding heart

Question 24

Serous membrane covering heart muscle

Answer 24

Epicardium

Question 25

Serous membrane that is separated from heart by another membrane and pericardial fluid

Answer 25

Pericardium

Question 26

Purpose of pericardial sac

Answer 26

Parasympathetic ganglia that innervated heart located here

Protects heart from friction while pumping

Question 27

Two types of cardiac tissue

Answer 27

Contractile cells

Autorhytmic cells

Question 28

1% of cardiac tissue

Answer 28

Autorhythmic cells

Question 29

99% of cardiac tissue

Answer 29

Contractile cells

Question 30

Unique to cardiac muscle cell

Answer 30

Intercalated discs

Question 31

Intercalated discs

Answer 31

Electrical + physical connection between cells

Question 32

Connection via intercalated discs occurs via

Answer 32

1. Desmosome (physical anchors between each other)

2. Gap junctions spanning both membranes (electrical coupling)