Normal Size Small Size show me how
EKG Quiz 1- heart
anatomy of heart, conduction system, properties of myocardial cells
|Where is the heart located?
|2/3 of the heart on the ________ side; 1/3 of the heart on the __________ side.
|The base of heart is made up of ___________ called ______ and ____________.
|Vessels; aorta and apex
|Four chambers of the heart
|R/L atrium; R/L ventricle
|Apex is made up of
|5th intercostal rib
|Receive blood from lungs and body
|Pump blood to lungs and body
|Which artery is only one w/ deoxygenated blood?
|Valves purpose is to
|Prevent back flow
|The common wall between right and left side of the heart
|What type of blood is found on right side of the heart?
|What type of blood is in left side of the heart?
|What is the function is the coronary arteries?
|Supply blood to the heart muscle
|Condition where lack of blood supply, partially blocked and considered and injury is
|Complete lack of blood supply to the heart
|What causes heart sounds?
|The opening and closing of the valves
|Middle muscular of the heart, most important
|Innermost layer of the sac lining the heart surface w thin tight covering (visceral pericardium)
|Double walled membranous sac; parietal peri. Fluid between layers protects
|Layer responsible for contraction and relaxation action of the heart
|Layer that lines the vessels, valves and ventricles
|Tricuspid valve is located
|Between R atrium and R ventricle
|Bicuspid Vale aka Mitral is located
|Between L atrium and L ventricle
|Pulmonary Semilunar Valve is located
|Between R ventricle and pulmonary artery
|Aortic Semilunar Valve is located
|Between aorta and L Ventricle
|The system of the heart is called
|Primary pacemaker of the heart that sets speed and rhythm, located upper side of R atrium
|HR below 60
|HR above 100
|Starts working when SA node stops; aka gatekeeper
|Small fibers located in ventricular walls
|NOrmal inherent rate of SA Node
|Inherent rate of AV Node
|Inherent rate of Purkinjie fibers
|How the impulses travel through the heart is called the
|How long is the delay when impulse reaches AV node
|1/10 of a second
|Responsible for conduction system
|Responsible for contraction and relaxation
|Ability of myo.card cells to generate and maintain heart rhythm w/o external stimuli
|Ability of myo.card. Cells to respond to an impulse
|Ability of myo.card. Cells to respond to an impulse by pumping action
|Ability of myo.card. Cells to relay an impulse to neighboring cells
|The junction all escape rhythm
|Difference of the charge across the cell membrane results in depolarization and depolarization
|Resting state of myocardial cells
|The electrical current state ions move across cell membrane more positive inside. Results in contraction of cell
|Ions return back to their original charge, results in relaxation of the cell
|SA node is working it is called
|NOrmal Sinus rhythm (NSR)
|SA fails and AV or PF take over it is called
|fluid within sac of pericardium
|heart contracts in which phase?
|heart rests in which phase?
|SA node is located
|upper side of R atrium
|largest veins in body are
|two upper chambers are __________________ and function as ______________ chambers
|R & L atrium; receiving
|two lower chambers are called _______________ and function as _________________ chambers
|outer layer of heart
|heart has how many layers?