Exam 7: The Peripheral Nervous System: Efferent Division

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity -The minimum volume of blood that the ventricle contains after emptying is complete is the _____.

Match the pressure relationships, labelled e., with the times in question. (Options may be used more than once or not at all.)a. through a.aortic pressure > ventricular pressure > atrial pressure b.ventricular pressure > aortic pressure > atrial pressure c.aortic pressure > atrial pressure > ventricular pressure d.ventricular pressure > atrial pressure > aortic pressure e.atrial pressure > ventricular pressure > aortic pressure -when the atrioventricular valve closes

Match the EKG features, labelled f., with their correct characteristic.a. through a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -time during which impulse is travelling through the AV node

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity -The volume of blood ejected by each ventricle each minute is known as the _____.

Match the terms, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.stroke volume b.end-diastolic volume c.cardiac output d.heart rate e.end-systolic volume f.sympathetic activity -Heart rate can be increased by increasing _____.

Match the effects with sympathetic or parasympathetic stimulation (or neither) of the heart. (Options may be used more than once or not at all.) a.effect caused by sympathetic stimulation b.effect caused by parasympathetic stimulation c.not brought about by either sympathetic or parasympathetic stimulation -increases the contractility of the atrial and ventricular muscle

Cardiac output is equal to which of the following?

The ECG is an actual recording of cardiac electrical activity.

A swishy murmur heard between the second and first heart sounds is indicative of a(n) ____________________ (stenotic or insufficient) ____________________ (AV or semilunar) valve.

The heart undergoes tetanic contraction during sympathetic stimulation to squeeze out more blood.

Match the cardiovascular features, labelled a. through d., with their correct characteristic. a.angina pectoris b.embolus c.atherosclerosis d.thrombus -freely floating clot

Match the effects with sympathetic or parasympathetic stimulation (or neither) of the heart. (Options may be used more than once or not at all.) a.effect caused by sympathetic stimulation b.effect caused by parasympathetic stimulation c.not brought about by either sympathetic or parasympathetic stimulation -decreases the contractility of the ventricular muscle

The stroke volume is the total volume of blood ejected by both ventricles per minute.

The average resting heart rate is normally established by the rhythm of the AV node.

Ventricular ejection occurs once the afterload has been overcome.

Match the ions, labelled a. through c., with the events being described. (Options may be used more than once or not at all.) a.K⁺ b.Na⁺ c.Ca²⁺ -Inactivation of _____ channels brings about the slow drift of membrane potential to threshold in the cardiac autorhythmic cells.

What is the function of the atrioventricular node?

Stroke volume can vary by alterations in both intrinsic and extrinsic control mechanisms.

When does electrical activity occur at the AV node?

Match the EKG features, labelled f., with their correct characteristic.a. through a.P wave b.QRS complex c.T wave d.PR interval e.TP interval f.ST segment -time during which atria are repolarizing