Exam 9: Cardiac Physiology

Match the characteristic with the appropriate term(s). a.tricuspid valve b.bicuspid valve c.mitral valve d.pulmonary valve e.aortic valve f.all heart valves g.aortic valve; pulmonary valve h.bicuspid valve; mitral valve i.tricuspid valve; bicuspid valve j.tricuspid valve; pulmonary valve k.mitral valve; aortic valve l.fibrous skeleton m.chordae tendineae n.oxygenated blood o.deoxygenated blood -Blood passes out of the right ventricle through this valve

Match the characteristic with the appropriate term(s). a.tricuspid valve b.bicuspid valve c.mitral valve d.pulmonary valve e.aortic valve f.all heart valves g.aortic valve; pulmonary valve h.bicuspid valve; mitral valve i.tricuspid valve; bicuspid valve j.tricuspid valve; pulmonary valve k.mitral valve; aortic valve l.fibrous skeleton m.chordae tendineae n.oxygenated blood o.deoxygenated blood -Allow blood to move in only one direction

Use the answer code below to complete the following statements. a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity g.stroke volume and heart rate h.end-diastolic volume and end-systolic volume i.end-diastolic volume and sympathetic activity -Stroke volume can be increased by increasing _____ and _____.

An increase in venous return ____________________ the end-diastolic volume.

____-type calcium channels are present only in the pacemaker cells of the heart.

An increased heart rate can result due to a decrease in parasympathetic stimulation or an increase in sympathetic stimulation of the heart.

Diastole refers to the period of cardiac repolarization.

Use the following answer code to compare the magnitude of the items in question. a.A is greater than b.b.B is greater than a.c.A and B are equal or nearly equal. -a.Rate of depolarization of the SA node during parasympathetic stimulation B.Rate of depolarization of the SA node during sympathetic stimulation

Norepinephrine ____________________ the SA node's permeability to Ca2⁺, which then ____________________ the length of time between subsequent heart beats.

The ____________________ volume is the blood in the ventricle when ejection is complete, whereas the ____________________ volume is the blood in the ventricle just before ejection begins.

Use the answer code below to complete the following statements. a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity g.stroke volume and heart rate h.end-diastolic volume and end-systolic volume i.end-diastolic volume and sympathetic activity -The volume of blood ejected by each ventricle each minute is known as the _____.

Use this figure to answer the corresponding questions. -Identify the location(s) where fast calcium channels are open. a.1 and 2 b.1 and 3 c.2 and 3 d.3 and 4 e.4 only

The refractory period of cardiac muscle

A metabolic predictor of heart disease that is independent of one's cholesterol/lipid profile is

Match the characteristic with the appropriate term(s). a.tricuspid valve b.bicuspid valve c.mitral valve d.pulmonary valve e.aortic valve f.all heart valves g.aortic valve; pulmonary valve h.bicuspid valve; mitral valve i.tricuspid valve; bicuspid valve j.tricuspid valve; pulmonary valve k.mitral valve; aortic valve l.fibrous skeleton m.chordae tendineae n.oxygenated blood o.deoxygenated blood -Blood passes out of ventricles through these valves

Decreasing preload ____________________ contractility, which then ____________________ stroke volume.

The chordae tendineae

Increasing the afterload ____________________ the length of time the heart is in isovolumetric contraction.

Match the characteristic with the appropriate term(s). a.tricuspid valve b.bicuspid valve c.mitral valve d.pulmonary valve e.aortic valve f.all heart valves g.aortic valve; pulmonary valve h.bicuspid valve; mitral valve i.tricuspid valve; bicuspid valve j.tricuspid valve; pulmonary valve k.mitral valve; aortic valve l.fibrous skeleton m.chordae tendineae n.oxygenated blood o.deoxygenated blood -Prevents blood from entering a ventricle from an artery

Match cardiovascular feature with correct characteristic. a.angina pectoris b.embolus c.atherosclerosis d.thrombus -Consists of abnormal smooth muscle cells, cholesterol deposits, scar tissue, and possible calcium deposits plaque