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cardiology of heart

ANATOMY CHAPTER 13

QuestionAnswer
what encloses the heart, holds it in place pericardium
where is the fibrous pericardium outer layer
where is the parietal pericardium and visceral pericardium inner/ double layer
what is the outer layer. this is the visceral pericardium epicardium
what is the middle layer cardiac muscle (pumps) myocardium
what is the inner layer. squamous epithelium lines and covers valves endocardium
what is the upper chambers. separated by the interatrail septum atria aka: atrium
what is the lower chambers. separated by the inerventricular septum ventricles
what prevents blood from flowing backwards valves
what is found between atria and ventricles atriocentricular
what had 3 cusps (flaps) found b/w r. atrium and r. ventricle tricuspid valve
what has 2 cusps. found b/w l. atrium and l. ventricle bicuspid valve
what is found b/w ventricle and vessel leaving it semilunar
what is b/w r. ventricle and pulmonary truck pulmonary valve
what is b/w l. ventricle and aorta aortic valve
what is a threadlike structure that attaches the cusps chordae tendineae
what is arteries, capiliaries, veins that provide the myocardium w/ o2 and nutrients. blood drains back into the coronary sinus in the r. atrium coronary circulation
systole stands for what contraction
diastole stands for what relaxation
what is this atria contract while ventricles relax then ventricles contract while atria relax coordination
what is when ventricles contract, AV valves closing lubb
what is when ventricles relax, semilunars close dubb
what beats independently but CNS controls the rate intrinsic
what is behind r. atrium, acts like the human pacemaker sinoatrial (SA node)
what is near septum b/w atrium and ventricles atriocentricular (AV node)
what is inside top ventricular septum bundle branches
what is found throughout the ventricles purkinje fibers
what records changes in the cardiac cycle electrocardiogram aka: ECK or EKG
what wave SA node initiating systole of atria p waves
what wave Contraction of ventricles QRS wave
what wave Diastole (repolarization) of ventricles T wave
what is via spinal cord that stimulates by norepinophrine increase heart rate, strengthens contractions sympathetic
what is via vagus nerve that inhibited by acetylcholine, decreases heart rate, weakens contractions parasympathetic
what increase contractions epinephrine
what decreases contractions high k+ or na+
what increase contractions- high body temp
what decreased contractions-older age
what decreased contractions-male gender
what lead away from arteries
what are small vessels arterioles
what are walls a single-cell-layer thick allow molecular exchange with cells capillaries
what collects blood from capillaries venules
what leads toward veins
what is normal blood pressure 120/180
Created by: katercheers