Basics Pt. 1
The organ that pumps blood throughout the body
What is the heart?
The chambers of the heart
What are the R/L atrium, and the R/L ventricle?
Volume of blood pumped from the left ventricle per beat
What is stroke volume?
The percentage of the total blood volume composed of cells and formed elements
What is hematocrit?
These receptors decrease HR in PNS
What are cholinergic receptors?
The two pumps of the heart
What are the right and left pump?
This muscle controls capillary diameter
What is the pre-capillary sphincter?
Blood is composed of
What are plasma, and formed elements?
The flow of blood from the periphery back to the right atrium
What is venous return?
Cholinergic receptors of the PNS
What are the SA node, AV node, and walls of atria?
This pumps moves blood to the lungs
What is the right pump?
A mixture of blood that drains the upper and lower body
What is mixed venous blood?
The amount of blood pumped by the heart during a 1 minute period
What is cardiac output?
Resistance to blood flow in arterial circuit
What is afterload?
Receptors that increase HR in SNS
What are adrenergic receptors?
This pumps receives oxygenate blood from the lungs
What is the left pump?
Separates left and right sides of the heart
What are valves?
In this equation, Q= HR x SV, SV represents
What is stroke volume?
Myocardial oxygen consumption
What is RPP (Rate pressure product)?
Adrenergic receptors of the SNS
What are the SA node, AV node, walls of atria, and walls of ventricles?
Simultaneous contraction of both atria forces that squeezes remaining blood to ventricle
What is atrial kick?
The slamming shut of valves cause
What are heart sounds?
Blood thickness, viscosity, length of conducting tube, and blood vessel radius
What is total peripheral resistance?
Force of contraction of the cardiac muscle remains proportional to its initial resting length
What is the Frank-Starling Law?
Removing this inhibitory signal increases HR to 100 bpm
What is vagal tone?