Ex. 17 The Heart in Mastering
C. Autorhythmicity
Cardiac muscle is capable of which of the following? A. Tetanus B. Wave summation C. Autorhythmicity D. All of the above
Aortic arch
Identify the structure labeled A
Atrial conducting fibers
Identify the structure labeled A
C. Sinoatrial (SA) node
Identify the structure labeled A. A. Atrioventricular (AV) node B. Purkinje fibers C. Sinoatrial (SA) node D. Bundle branch E. AV bundle
A. Right atrium
Identify the structure labeled A. A. Right atrium B. Left ventricle C. Left atrium D. Right ventricle
Left pulmonary artery
Identify the structure labeled B
Purkinje fiber system
Identify the structure labeled B
A. Atrioventricular (AV) node
Identify the structure labeled B. A. Atrioventricular (AV) node B. Purkinje fibers C. Sinoatrial (SA) node D. Bundle branch E. AV bundle
A. Tricuspid valve
Identify the structure labeled B. A. Tricuspid valve B. Aortic semilunar valve C. Bicuspid valve D. Pulmonary semilunar valve
AV bundle
Identify the structure labeled C
Left pulmonary veins
Identify the structure labeled C
E. AV bundle
Identify the structure labeled C. A. Atrioventricular (AV) node B. Purkinje fibers C. Sinoatrial (SA) node D. Bundle branch E. AV bundle
D. Right ventricle
Identify the structure labeled C. A. Right atrium B. Left ventricle C. Left atrium D. Right ventricle
Left atrium
Identify the structure labeled D
Right bundle branch
Identify the structure labeled D
D. Bundle branch
Identify the structure labeled D. A. Atrioventricular (AV) node B. Purkinje fibers C. Sinoatrial (SA) node D. Bundle branch E. AV bundle
B. Left ventricle
Identify the structure labeled D. A. Right atrium B. Left ventricle C. Left atrium D. Right ventricle
Circumflex artery
Identify the structure labeled E
Left bundle branch
Identify the structure labeled E
B. Purkinje fibers
Identify the structure labeled E. A. Atrioventricular (AV) node B. Purkinje fibers C. Sinoatrial (SA) node D. Bundle branch E. AV bundle
B. Aortic semilunar valve
Identify the structure labeled E. A. Tricuspid valve B. Aortic semilunar valve C. Bicuspid valve D. Pulmonary semilunar valve
Coronary sinus
Identify the structure labeled F
Purkinje fibers
Identify the structure labeled F
B. Aorta
Identify the structure labeled F. A. Superior vena cava B. Aorta C. Inferior vena cava D. Right pulmonary artery
Left ventricle
Identify the structure labeled G
Sinoatrial (SA) node
Identify the structure labeled G
Atrioventricular (AV) node
Identify the structure labeled H
Superior vena cava
Identify the structure labeled H
C. Bicuspid valve
Identify the structure labeled H. A. Tricuspid valve B. Aortic semilunar valve C. Bicuspid valve D. Pulmonary semilunar valve
Right atrium
Identify the structure labeled I
action potential
Identify the structure labeled I
B. Chordae tendineae
Identify the structure labeled I. A. Apex B. Chordae tendineae C. Interventricular septum D. Papillary muscle
Inferior vena cava
Identify the structure labeled J
contractile cells
Identify the structure labeled J
D. Papillary muscle
Identify the structure labeled J. A. Apex B. Chordae tendineae C. Interventricular septum D. Papillary muscle
Right coronary artery
Identify the structure labeled K
C. Interventricular septum
Identify the structure labeled K. A. Apex B. Chordae tendineae C. Interventricular septum D. Papillary muscle
Right ventricle
Identify the structure labeled L
Posterior interventricular artery
Identify the structure labeled M
A. increases; increases
Norepinephrine _______ the rate of depolarization of the heart and _______ the frequency of action potentials. A. increases; increases B. decreases; increases C. increases; decreases D. decreases; decreases
C. plateau phase
Phase 2 of the cardiac action potential, when the calcium channels are open and the potassium channels are closed, is called: A. threshold B. relative refractory period C. plateau phase D. absolute refractory period
B. potassium
Resting cardiac cells are most permeable to: A. calcium B. potassium C. magnesium D. sodium
C. right atrium.
The SA node is located in the A. left ventricle. B. right ventricle. C. right atrium. D. left atrium.
B. right atrium
The SA node is located in the: A. right ventricle B. right atrium C. left ventricle D. left atrium
D. decrease the heart rate.
The effect of the parasympathetic nervous system on the heart is to A. decrease the heart rate and decrease the force of contraction. B. increase the heart rate and increase the force of contraction. C. increase the heart rate. D. decrease the heart rate.
A. decrease the heart rate
The effect of the parasympathetic nervous system on the heart is to: A. decrease the heart rate B. increase the heart rate C. increase the heart rate and increase the force of contraction D. decrease the heart rate and decrease the force of contraction
A. sinoatrial node
The usual pacemaker of the heart is the: A. sinoatrial node B. Purkinje fibers C. atrioventricular node D. coronary sinus
E. Aorta
What blood vessel carries oxygenated blood out of the heart to the systemic circuit? A. Superior or inferior vena cava B. Pulmonary veins C. Pulmonary trunk D. Pulmonary arteries E. Aorta
D. Right ventricle
What chamber pumps deoxygenated blood out of the heart to the lungs? A. Left atrium B. Left ventricle C. Right atrium D. Right ventricle
C. Auricle of the right atrium
What is the structure labeled A? A. Right ventricle B. Left ventricle C. Auricle of the right atrium D. Auricle of the left atrium
A. Right ventricle
What is the structure labeled B? A. Right ventricle B. Left ventricle C. Auricle of the right atrium D. Auricle of the left atrium
B. Apex of the heart
What is the structure labeled C? A. Base of the heart B. Apex of the heart C. Aorta D. Aortic semilunar valve
C. Aorta
What is the structure labeled D? A. Base of the heart B. Apex of the heart C. Aorta D. Aortic semilunar valve
D. Aortic semilunar valve
What is the structure labeled E? A. Base of the heart B. Apex of the heart C. Aorta D. Aortic semilunar valve
D. Auricle of the left atrium
What is the structure labeled F? A. Right ventricle B. Left ventricle C. Auricle of the right atrium D. Auricle of the left atrium
B. Left ventricle
What is the structure labeled G? A. Right ventricle B. Left ventricle C. Auricle of the right atrium D. Auricle of the left atrium
D. Aortic semilunar (SL) valve
What valve prevents backflow of blood after it exits the heart when going to the systemic circuit? A. Tricuspid valve B. Bicuspid (mitral) valve C. Pulmonary semilunar (SL) valve D. Aortic semilunar (SL) valve
A. Bicuspid
Which atrioventricular valve is found on the left side of the heart? A. Bicuspid B. Aortic C. Tricuspid D. Pulmonary
D. bicuspid
Which atrioventricular valve is found on the left side of the heart? A. tricuspid B. aortic C. pulmonary D. bicuspid
C. pulmonary SL
Blood traveling through the pulmonary trunk has just passed through the _____ valve. A. tricuspid B. bicuspid C. pulmonary SL D. aortic SL
B. aortic SL
After leaving the left ventricle, blood travels through the _____ valve. A. tricuspid B. aortic SL C. pulmonary SL D. bicuspid
A. tricuspid
After leaving the right atrium, blood passes through the _____ valve. A. tricuspid B. aortic SL C. pulmonary SL D. bicuspid
D. hyperthermia
An internal body temperature that is above normal is called: A. hypothermia B. homeopathic C. homeothermic D. hyperthermia
B. superior vena cava
Blood from the head and neck will travel to the right atrium through the _____. A. inferior vena cava B. superior vena cava C. aorta D. coronary sinus
B. oxygen poor
Blood on the right side of the heart is mostly____. A. oxygen rich B. oxygen poor
C. right atrium
From the vena cavae, blood flows to the ______. A. coronary sinus B. right ventricle C. right atrium D. left ventricle
C. Left atrium
Identify the chamber labeled G. A. Right atrium B. Left ventricle C. Left atrium D. Right ventricle
Atrial depolarization
In the cardiac cycle, what does the P wave indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole
Atrial systole
In the cardiac cycle, what does the P-R interval indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole
Ventricular depolarization
In the cardiac cycle, what does the QRS complex indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole
Ventricular systole
In the cardiac cycle, what does the R-T interval indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole
Ventricular repolarization
In the cardiac cycle, what does the T wave indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole
Ventricular diastole
In the cardiac cycle, what does the T-R interval indicate? Ventricular depolarization Ventricular diastole Ventricular repolarization Ventricular systole Atrial depolarization Atrial systole