Chap 31- Function of Cardiac System

Question 1

Primary Function of Cardiovascular System

Answer 1

• Transport O2 to tissues and organs
• Transpot Nutrients to tissues & organs
  -Deliver waste products to organs for excretion

Question 2

All organs need constant supply of ____ & ______

Answer 2

Blood and oxygen

Question 3

The heart is a double pump. T or F

Answer 3

True
Pulmonary & System Circulation

Question 4

Right side of heart is what ….

Answer 4

Pulmonary Circulation (pumps to lungs)

Question 5

Left side of hear is what type of circulation

Answer 5

Systemic Circulation (pumps to left side of body)

Question 6

Why is L side of heart more muscular?

Answer 6

It has to pump blood to all tissues and organs of the body

Question 7

3 Layers of Heart (In to Out)

Answer 7

Endocardium
Myocardium (muscular layer)
Epicardium

Question 8

Which system controls the heart?

Answer 8

ANS- Heart has its own automaticity

Question 9

pacemaker of heart that shoots impulse that start contraction of the heart

Answer 9

SA node (in R Atria)

Question 10

Purpose of valves in the heart

Answer 10

-Opens and closes in response to blood pressure changes
-Pushes blood in one direction to increase efficiency
-Helps prevent back flow of

Question 11

back flow of blood in heart is called

Answer 11

regurgitation (makes heart work harder)

Question 12

4 valves in heart

Answer 12

Tricuspid
Mitral
Pulmonic semi lunar
Aortic Semi Lunar

Question 13

Reasons for Faulty Heart Valves

Answer 13

Inflammation
Infection
Trauma
Congenital Defect

Question 14

flow of blood through body’s tissues

Answer 14

perfusion

Question 15

a blood vessel that carries blood FROM the heart to tissues and organs in the body

Answer 15

arteries

Question 16

A blood vessel that carries blood TO the heart from tissues and organs in the bod

Answer 16

veins

Question 17

a very small blood vessel that branches off from your artery and carries blood away from your heart to your tissues and organs.

Answer 17

arterioles

Question 18

smallest blood vessel in body that T transport blood, nutrients and oxygen to cells in your organs and body systems; gas exchange takes place here

Answer 18

capillaries

Question 19

Difference between alveoli and capillaries

Answer 19

Alveoli are tiny air sacs in lungs where gas exchange occurs, capillaries surround alveoli and facilitate the exchange

Question 20

Gas exchange in lungs takes place…
Gas exchange in vascular system take place

Answer 20

lungs-alveoli theyre just in lungs
vascular- capillaries *theyre all throughout body

Question 21

Normal Cardiac System Depends on

Answer 21

• Ability to generate & conduct electrical impulses (SA node works)
• Ability to fill and empty properly (Valves work)
• Contractility of the heart (heart is a muscle, should be strong)

Question 22

Major cause of low/lack blood flow

Answer 22

Faulty valves (blood is not getting where it should

Question 23

inherent firing rate of 60-100 bpm

Answer 23

Sinoatrial Node

Question 24

able to inherently fires at 40-60 BPM

Answer 24

AV node (Atrioventricular)

Question 25

able to inherently fire at a rate of 30-40 BPM

Answer 25

L&R Bundle of His

Question 26

able to inherently fire at a rate of 20-30 BPM

Answer 26

Purkinje Fibers *Pt will need a pacemaker *