Heart Anatomy
Location of the heart
Mediastinum
Blood enters from the Head and Neck into this structure
Superior vena cava
Change in Heart Rate
Chronotropic effect
Period during which the chamber is contracting, and blood is being ejected
Systole
This artery feeds the right atrium and ventricle
Right coronary artery (RCA)
Base of the Heart
Posterior
This atrioventricular valves separates the Right atrium from the Right ventricle
Tricuspid
Epinepherine and Norepinepherine
Primary Neurotransmitters of the Sympathetic nervous system
Cardiac output x peripheral vascular resistance
Blood Pressure
Also known as the "Widow Maker"
Left main
Formed by the tip of the left ventricle
Apex
Blood enters the left atrium via what veins
Pulmonary
Dilation of smooth bronchial muscle
Beta2 receptors
Blood pumped into the aorta each minute by the heart
Cardiac Output
Chronic disease of the arterial system by abnormal thickening, hardening of vessel walls
Arteriosclerosis
Middle layer of the heart
Myocardium
Blood leaves the Left Atrium through this valve into the Left Ventricle
Mitral
Neurotransmitter of the Parasympathetic nervous system
Acetylcholine
Ventricles begin to passively fill with blood
Ventricular diastole
Lack of oxygenated blood flow to the heart
Ischemia
Base of the heart lies at this rib
Blood is ejected from the semi-lunar valve in to the Aorta
Aortic
Peripheral vasoconstriction
Alpha1 receptor site
Acute changes in blood pressure, cold, clammy skin, dysrhythmias.
S/S of decreased cardiac output
Left main, Left anterior descending, circumflex
Left coronary artery (LCA