The Cardiovascular System

Question 1

What is the Cardiorespiratory System?

Answer 1

system of body comprised of cardiovascular and respiratory systems

Question 2

What is the purpose of the cardiorespiratory system?

Answer 2

to provide the body with adequate oxygen and remove wastes like co2.

Question 3

What is the Cardiovascular system?

Answer 3

system of the body composed of heart, blood, and blood vessels

Question 4

The Heart lies anteriorly to the sternum. T or F.

Answer 4

False. It likes posteriorly to the sternum and anteriorly to the spine

Question 5

What is the space of the chest called between the lungs that contains all internal organs nd what does it excluded

Answer 5

the Mediatstinum and it excludes the lungs

Question 6

How much does a typical heart weigh?

Answer 6

300g

Question 7

What is a cardiac muscle similar to and what do they contain?

Answer 7

similar to skeletal muscle and they contain myofibrils and sarcomeres.

Question 8

What is the function of an intercalated disc?

Answer 8

holds muscle cells together during contraction to create an electrical connection between the cells for the hearts contraction.

Question 9

Average resting heart rate is ____

Answer 9

70-80bpm

Question 10

What is the Sinotrial Node?

Answer 10

area of cardiac tissue in the right atrium which initiates the electrical impulse to determine heart rates; termed the pacemaker of the heart

Question 11

Atrioventricular Node?

Answer 11

Specialized cardiac fibers located in the wall of the right atrium of the heart that receives heart beat impulses from SA Node and directs them to the walls of the ventricles

Question 12

Where is the SA Node located?

Answer 12

the Right Atrium

Question 13

____ seperates the two atriums

Answer 13

Interatrial septum

Question 14

_____ seperates the two ventricles

Answer 14

interventricular septum

Question 15

The Pulmonic side of the heart is the right or left side? Why?

Answer 15

Right side because it receives blood low in oxygen, pumps blood to lungs, and back to the left atria.

Question 16

The Systemic side of the heart is the left or right side of the heart? Why?

Answer 16

Left side because it pumps blood high in oxygen to the rest of the body

Question 17

Does the right ventricle operate under high or lower pressure and why?

Answer 17

Low Pressure because it pumps to the heart

Question 18

Does the left ventricle operate under high or low pressure and why?

Answer 18

High Pressure because it pumps to the rest of the body.

Question 19

Amount of Blood pumped out of the heart with each contraction is referred to ____

Answer 19

stroke volume

Question 20

What is the formula for Stroke Volume?

Answer 20

EDV - ESV

Question 21

What are the 3 support mechanisms of blood?

Answer 21

Transportation (oxygen, waste, heat and Hormones), Regulation (heat), Protection (clotting and Immune cells)

Question 22

What are the main types of blood vessels?

Answer 22

Arteries, Veins, and Capillaries

Question 23

What are Capillaries?

Answer 23

Smallest blood vessel and site of exchange of chemicals and water between the blood and tissue

Question 24

How does a Cardiac Muscle differ from a skeletal muscle tissue

Answer 24

Intercalated Discs

Question 25

Is a Cardiac Muscle Voluntary or Involuntary?

Answer 25

Involuntary because you can not control the hearts function