NASM CPT Chapter 3 Flashcards
What is the cardiorespiratory system?
A system of the body composed of the cardiovascular and respiratory systems.
What is the cardiovascular system?
A system of the body composed of the heart, blood, and blood vessels.
What is the heart?
A hollow muscular organ that pumps a circulation of blood through the body by means of rhythmic contraction.
Where is the heart located?
The mediastinum.
Sinoatrial (SA) Node is considered the:
&
Is one of the _____ heart beats.
Pace maker of the heart.
&
Two.
Atrioventricular (AV) Node receives:
Heartbeat impulses from sinoatrial node & directs them to ventricles. Creates a stall in heart beat, delays signal to lower portion of heart.
(A)trium:
Superior chamber of heart, receives veins and forces it into ventricles. 1st contraction.
(V)entricle:
Inferior chamber of heart that receives blood from atrium & forces blood into arteries. 2nd contraction.
**Stroke Volume
The amount of blood pumped out of the heart with each contraction.
Heart Rate (HR)
The rate at which the heart pumps.
Cardiac Output (Q)
Heart rate X stroke volume = cardiac output. Is the volume of blood pumped by the heart per minute. The overall performance of the heart.
Which is a product of multiplying the amount of BPM x the volume per beat of the heart?
Cardiac Output.
Radial pulse is best taken with what strategy and when?
Light pressure on the thumb side when waking in am. Do 3 mornings to get average.
Blood:
Fluid that circulates in the heart, arteries, capillaries, and veins. Transports nutrients & oxygen to all parts of the body and also rids the body of waste products. Transports hormones, carries heat through body, regulates acid balance, protects by clotting, contains immune cells.
Blue blood=
Deoxygenated blood.