The coronary sulcus is a groove on the outside of the heart that marks the boundary between the

A. Left and right atria

B. Left and right ventricles

C. Atria and ventricles

D. Aorta and the pulmonary trunk

In which choice are the components of the cardiac conduction system listed in the correct order in which  they conduct the cardiac impulse?

A. SA node, AV bundle, AV node, Purkinje fibers

B. SA node, AV node, AV bundle, Purkinje fibers

C. AV node, AV bundle, SA node, Purkinje fibers

D. AV node, SA node, Purkinje fibers, AV bundle

The plateau phase of the cardiac contractile cell action potential is caused by

A. Ca inflow

B. CI inflow

C. K outflow

D. Na outflow

Conduction of the cardiac impulse is slowed as it passes through the AV node. This allows time for

A. Ventricles to start contracting before the atria finish contracting

B. Atria  to contract completely before the ventricles start to contract

C. SA node to catch up

D. Last ventricular contraction to finish

The first heart sound (lubb) is due to 

A. Closing of Atrioventricular valve

B. Closing of semilunar valve

C. Opening of Atrioventricular valve

D. Opening of semilunar valve

Pressure in the ventricles would be highest during

A. Atrial diastole

B. Atrial systole

C. Ventricular diastole

D. Ventricular systole

The alternate contraction and relaxation of the atria and ventricles are referred to as the

A. Cardiac output

B. Coronary circulation

C. Cardiac conduction system

D. Cardiac cycle

Stroke volume times heart rate equals

A. Blood pressure

B. Afterload

C. End systolic volume

D. Cardiac output

D. Cardiac output

Steven's cardiac output at rest is 5 L/min. When he is exercising strenuously it is 20 L/min. What is Steven's cardiac reserve?

A. 4 L/min

B. 15 L/min

C. 25 L/min

D. 100 L/min

In response to increased activity, the heart would be called upon to ______the amount of blood pumped, and this would be caused by signals from _____fibers. 

A. increase;sympathetic

B. increase; parasympathetic

C. decrease; sympathetic

D. decrease; parasympathetic

A resting heart rate of 40 beats/min indicates the person has

A. Tachycardia

B. Bradycardia

C. Normal heart rate

D. Abnormal heart rate

The heart valves

A. Contract to pump blood through the heart

B. Separate  the left and right sides of the heart

C. Cause the heart sounds when they contract

D. Prevent blood from flowing backwards through the heart

Damage to which of the following parts of the brain would cause the body to have less control over cardiac activity?

A. Cerebral cortex

B.  Thalamus

C. Basal nuclei

D. Medulla oblongata

All cardiac veins empty into the ______, which empties into the __________. 

A. Coronary sinus; left atrium

B. Coronary sinus; right atrium

C. Great cardiac vein; right atrium

D. Great cardiac vein; superior vena cava

The right side of the heart acts as a pump for the 

A. Pulmonary circulation

B. Systemic circulation

C. Coronary circulation

D. Hepatic portal circulation

An auricle is

A. A valve located in a blood vessel

B. An extension of the atrial wall

C. Part of a heart valve

D. A blood vessel that carries blood away from the heart

The pericardial cavity is between the

A. Fibrous pericardium and parietal pericardium

B. Left atrium and left ventricle

C. Visceral pericardium and parietal pericardium

D. Endocardium and myocardium

Blood leaving the left ventricle goes through which of the following valves?

A. Bicuspid

B. Tricuspid

C. Pulmonary semilunar valve

D. Aortic semilunar valve

Fossa ovalis is a small shallow depression in the

A. Parietal pericardium

B. Interventricular septum

C. Interatrial septum

D. Atrioventricular septum

Contraction of a ventricular chamber is called

A. Diastole

B. Diastasis

C. Hypertrophy

D. Systole