Chapter 3 - The Cardiorespiratory System

Question 1

The cardiorespiratory system

Answer 1

Composed of the respiratory and cardiovascular system

Question 2

The cardiovascular system

Answer 2

Blood vessels, blood, and the heart

Question 3

Arteries

Answer 3

Carry blood away from the heart to the rest of the body

Question 4

Veins

Answer 4

Return blood to the heart from the rest of the body

Question 5

Stroke volume

Answer 5

The amount of blood pumped out the heart with each contraction

Question 6

Cardiac output

Answer 6

Heart rate × stroke volume

Question 7

Sinoatrial (SA) node

Answer 7

The “pacemaker” of the heart because it initiates the heartbeat

Question 8

Typical heart rate for an adult

Answer 8

70-80 BPM

Question 9

The heart has two pairs of different chambers. what are they called?

Answer 9

atriums and ventricles

Question 10

Function of the right atrium

Answer 10

Receives blood coming from the body.

Question 11

Function of the right ventricle

Answer 11

Has thinner walls because it only needs to pump blood a short distance back to the heart and the lungs.

Question 12

Function of left ventricle

Answer 12

as much thicker walls and is a much higher pressure pump because it is required to push blood to the rest of the body.

Question 13

Function of the left atrium

Answer 13

The left atrium receives the blood (oxygen-rich) that comes from the lungs and the heart.

Question 14

The Functions of Blood

Answer 14

Protection, Regulation, Transportation

Question 15

Blood : Protection

Answer 15

The white blood cells help to protect your body against diseases and blood clotting helps with fluid loss

Question 16

Blood : Regulation

Answer 16

Blood helps keep a stable body temperature, electrolyte, and water level as well as pH.

Question 17

Blood : Transportation

Answer 17

The primary function of blood is to transport nutrients and oxygen to the cells of the body. It also takes away CO2 and various wastes from the cells and delivers hormones to specific tissues

Question 18

What is respiratory pump

Answer 18

These are the thoracic and abdominal structures that help with the contraction and expansion of the lungs.

Question 19

The muscles that comprise the respiratory pump are:

Answer 19

For inhalation: The Scalene muscles, the pack minor, sternocleidomastoid, and the diaphragm.

For exhalation: The internal intercostals and the abdominal muscles

Question 20

Is the cycle of the respiratory pump

Answer 20

Inhalation:

1) The thoracic cavity expands new
2) The pressure within the pleural cavities drop
3) This pulls air to the lungs
4) It also brings blood into the IVC and the right atrium from the smaller veins that exist in the abdominal cavity

Exhalation:

1) The pressure in the pleural cavities rise
2) This forces blood into the right atrium
3) This is important especially for heavy exercises