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The Circulatory System
CFD 2009 Paramedic Class
66
Medical
Professional
02/08/2009

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Cards

Term
The Cardoiovascular system consists of?
Definition
The Heart, Blood Vessels, & the Blood
Term
The area between the lungs is called?
Definition
The mediastinum
Term
The Heart is also called?
Definition
Myocardium
Term
The pericardium or pericardial sac is?
Definition
A thick fibronous membrane that surrounds the heart
Term
The visceral layer of the pericardium is also known as?
Definition
Epicardium
Term
The second layer of the pericardium is called?
Definition
The Parietal Layer
Term
The visceral layer is separated from the parietal layer by?
Definition
Pericardial fluid
Term
The normal human heart has how many chambers?
Definition
4
Term
The upper chambers of the heart are?
Definition
The Atria
Term
The lower chambers of the heart are?
Definition
Ventricles
Term
This separates the 2 atria
Definition
Interatrial Septum
Term
This separates the right & left ventricles
Definition
Interventricular septum
Term
The atrium _______ blood
Definition
receives
Term
The ventricles pump blood ______ from the heart
Definition
Away
Term
Blood enters the right atrium via?
Definition
The superior and inferior Venae Cavae and the Coronary Sinus
Term
Valve that separates right atrium from the right ventricle
Definition
Tricuspid Valve
Term
Valve that separates left atrium from the left ventricle
Definition
Mitral Valve
Term
The 2 semilunar valves are?
Definition
The Aortic Valve and the Pulmonic Valve
Term
The Pulmonic valve does what?
Definition
Regulates blood flow from the right ventricle to the pulmonary artery
Term
The Aortic Valve does what?
Definition
Regulates blood flow from the left ventricle to the Aorta
Term
The superior & inferior Vena Cava return deoxygenated blood from ______, to _______
Definition
The Body, The right atrium
Term
The bodys' largest artery is the?
Definition
Aorta
Term
Freshly oxygenated blood is returned to the left atrium through the?
Definition
Pulmonary veins
Term
Sound caused by the closure of the Mitral & Tricuspid valves
Definition
S 1
Term
S 2 is?
Definition
Closure of the Aortic & Pulmonic Valves
Term
The Cardiac Conduction System consists of how many parts?
Definition

6

Term
The 6 parts of the Cardiac conduction system are?
Definition

SA Node (sinoatrial)

AV Node (atrioventricular)

The Bundle of His

Right / Left bundle Branches

Purkinje Fibers

Term
The ability of cells to respond to electrical impulses
Definition
Excitability
Term
The ability of cells to conduct electrical impulses
Definition
Conductivity
Term
The ability of cells to contract without external nerve stimulus
Definition
Automaticity
Term
Control of the rate of contraction
Definition
Chronotropic state
Term
Control of the rate of electrical conduction
Definition
Dromotropic state
Term
Inotropic
Definition
Control of the strength of contraction
Term
Respond to changes in pressure in the heart or vessels
Definition
Baroreceptors
Term
Respond to changes in the chemical composition of the blood
Definition
Chemoreceptors
Term
The process of electrical discharge and flow of electrical activity
Definition
Depolarization
Term
The return of cells to a polarized state
Definition
Repolarization
Term
On the ECG, atrial contraction is represented by the ___ wave
Definition
P
Term
The time delay that occurs within the AV node
Definition
P R segment
Term
QRS complex represents?
Definition
Depolarization of the Ventricles
Term
Pressure created within the arteries
Definition
Systole
Term
The relaxation phase of the heart cycle
Definition
Diastole
Term
Blood Pressure Formula
Definition
BP = CO (cardiac output) X SVR (systemic vascular resistance)
Term

Vessels that carry blood AWAY from the heart

Definition
Arteries
Term
Vessels that carry blood TO the heart
Definition
Veins
Term
Tunica Intima or Endothelium
Definition
Inner lining of vessel
Term

The middle layer of a vessel is?

Definition
Tunica Media
Term
The outer layer of tissue is called the?
Definition
Tunica Adventia
Term
Characterized by deposits of calcium in the arterial walls
Definition
Arteriosclerosis
Term
Formation of lipids & cholesterol on the inner arterial walls
Definition
Atherosclerosis
Term
Circulation that carries blood from the right side of the heart to the lungs and back to the left side of the heart
Definition
Pulmonary Circulation
Term
The human adult male contains about _____ ml/kg of blood or _____ L
Definition
70, 5
Term
Red blood cells are also known as
Definition
Erythrocytes
Term
Protein that gives erythrocytes their color
Definition
hemoglobin
Term
A waste product that undergoes metabolism in the Liver
Definition
Bilirubin
Term
Antigens
Definition
Substances on the surface of erythrocytes recognized by the immune system
Term
Proteins within plasma that react with antigens
Definition
Antibodies
Term
Leukocytes
Definition
White Blood Cells
Term
_____ destroy bacteria, antigen/antibody complexes and foreign matter
Definition
Neutrophils
Term
Function in the body's allergic response
Definition
Eosinophils
Term
Play a role in both allergic and inflammatory response
Definition
Basophils
Term
What does the Spleen do within the circulatory system?
Definition
The Spleen helps to weed out old red blood cells.

Red blood cells live from 60 to 90 days.
Term
What is the term that describes "bleeding out"?
Definition
Exsanguination
Term
What are some of the signs and symptoms of hypoperfusion?
Definition
Increase in pulse, drop in blood pressure, pale cyanotic, shortness of breath
Term
What best describes Perfusion?
Definition
supplying nutrients and oxygen to body tissues due to the constant passage of blood through capillaries.
Term
Explain Poiseullie's Law
Definition
It states that blood flow through a vessel is directly proportional to the radius of the vessel to the 4th power.

Consequently, the pressue will have to increase to flow the same blood volume through a restricted vessel.
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