Exam 9: Cardiac Physiology

Using the following answer code, indicate which pressure relationship exists during the time in question. a.aortic pressure > ventricular pressure > atrial pressure b.aortic pressure > ventricular pressure < atrial pressure c.aortic pressure < ventricular pressure > atrial pressure d.aortic pressure < ventricular pressure < atrial pressure -When the aortic valve opens

Use the following answer code to indicate which factor involved in the initiation and spread of cardiac excitation is being identified a.SA node b.AV node c.bundle of His and Purkinje system d.gap junctions -Only point of electrical contact between the atria and ventricles

The only veins in an adult that contain highly oxygenated blood are the ______ veins.

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 -Type of blood in a pulmonary vein

Depolarization occurs at the AV node

Indicate which valve abnormality is being described using the answer code below. a.valvular stenosis b.valvular insufficiency -Produces a "whistling" murmur

Why can't tetanus occur in the heart?

Using the following answer code, indicate which pressure relationship exists during the time in question. a.aortic pressure > ventricular pressure > atrial pressure b.aortic pressure > ventricular pressure < atrial pressure c.aortic pressure < ventricular pressure > atrial pressure d.aortic pressure < ventricular pressure < atrial pressure -During isovolumetric ventricular contraction

Using the following answer code, indicate which pressure relationship exists during the time in question. a.aortic pressure > ventricular pressure > atrial pressure b.aortic pressure > ventricular pressure < atrial pressure c.aortic pressure < ventricular pressure > atrial pressure d.aortic pressure < ventricular pressure < atrial pressure -Moment when the atrioventricular valve closes

Choose a correct sequence of blood flow during one pass through the heart and lungs (some steps may have been omitted):

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 number of times the heart contracts each minute is the _____.

A whistling murmur heard between the second and first heart sound would be indicative of

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 the right ventricle during isovolumetric relaxation

The right ventricle pumps deoxygenated blood through the tricuspid valve and into the pulmonary arteries.

Isovolumetric contraction appears on the ECG as part of the QRS complex.

Vitamins ____________________ and ____________________ have been shown to slow plaque deposition in coronary arteries.

A condition in which the heart is contracting in an uncontrolled, rapid, and irregular manner

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 -Name is based on the resemblance to a hat

The amount of blood pumped out of the heart during each beat is known as the cardiac output.

An insufficient AV valve