Anatomy
Only artery in the body that carries deoxygenated blood
What is the pulmonary artery
Causes heart valves to open and close
What are pressure gradients
Travels beside the coronary arteries in the opposite direction
What are the cardiac veins
Carries electrical impulses to the left atrium
What is Bachmann's Bundle
A protein found in actin
What is Troponin
Feeds the left atrium, posterior and lateral walls of the left ventricle
What is the Left Circumflex artery
Creates the "lub" heart sound when closed
What is the Atrial/Ventricular Valves
Forms a crown around the heart and sends branches into the myocardium
What is the coronary circulation
Ability to pace at a rate of 40-60 and prevent impulses from conducting through to the Ventricles
What is the AV node
Muscle fibers in the heart that can transmit electrical impulses from the AV Node to the Purkinje fibers
What are bundle branches
Carries the systemic circulation to the right atrium
Open during ventricular systole
What are the semilunar valves
Enlarges and becomes functional to overcome occlusions over time
What is Collateral Circulation
Is the ability of the cell to spontaneously generate and discharge an electrical pulse
What is Automaticity
An unusual sound heard between heartbeats and sometimes sound like a whooshing or swishing noise.
What is a heart murmur
Layer of the heart that supports the heart & great vessels in the thorax
What is the Pericardium
Located between the left atrium and ventricle and has leaflets
What is the Mitral Valve
The term used when the RCA primarily feeds the Posteriorlateral artery
What is Right-Dominant
During this phase of the cardiac action potential potassium is rushing in
What is phase 3 during late repolarization
Serous fluid secreted by the serous layer of the pericardium into the pericardial cavity.
What is pericardial fluid
Attach the valve leaflets to the papillary muscles of the atrioventricular valves
What are the chordae tendonae
Creates incomplete closure of valves and regurgitation into the atria when damaged
What are the papillary muscles
Respond to the Autonomic Nervous System, chemical stimulation and temperature
What are Arteries and Arterioles
Responsible for muscular contraction and relaxation of the heart
What are Myocardial Cells
Represents the governing principals of blood flow and its behavior in the blood vessels.
What is hemodynamics