Upgrade to remove ads
Only $35.99/year

Anatomy Chapter 20: The Heart: Assessments Multiple Choice

Terms in this set (50)

The heart lies in
a) the pleural cavity
b) the abdominopelvic cavity
c) the peritoneal cavity
d) the mediastinum
e) none of the above
d) the mediastinum
The fibrous pericardial sac around the heart is lined by the
a) epicardium
b) endocardium
c) parietal myocardium
d) parietal endocardium
e) parietal pericardium
e) parietal pericardium
The visceral pericardium is the same as the
a) mediastinum
b) endocardium
c) parietal pericardium
d) myocardium
e) epicardium
e) epicardium
Fetal development of the heart occurs in
a) 2 stages
b) 4 stages
c) 6 stages
d) none of the above
b) 4 stages
The normal heart beats approximately
a) 60 beats/min
b) 72 beats/min
c) 85 beats/min
d) 100 beats/min
b) 72 beats/min
As the heart muscle contracts and relaxes, which layer is responsible for reducing friction between the muscle and the thoracic cage?
a) parietal pericardium
b) visceral pericardium
c) endocardium
d) pericardial cavity fluid
d) pericardial cavity fluid
The largest layer of the heart consisting predominantly of cardiac myocytes is called the
a) endocardium
b) endothelium
c) myocardium
d) epicardium
c) myocardium
Cardiac muscle cells communicate through an intricate system of proteins and attachments called
a) t-tubules
b) intercalated discs
c) desmonic apertures
d) branched striation
b) intercalated discs
If you were to dissect a cadaver and cut a midsagittal section through the trunk, it would not divide the heart into equal halves because
a) the entire heart is rotated to the left around the center line
b) the center of the base lies slightly to the left of the midline
c) a line drawn between the center of the base and the apex points farther to the left
d) all of the above
e) none of the above
d) all of the above
The heart wall is composed of _____ layers of tissue.
a) 2
b) 3
c) 4
d) 5
b) 3
The myocardium is primarily composed of _____ tissue.
a) smooth muscle
b) cardiac muscle
c) elastic
d) epithelial
b) cardiac muscle
The expandable extension of the atrium is the
a) coronary sinus
b) coronary sulcus
c) auricle
d) ventricle
c) auricle
The pericardial fluid is important because it
a) reduces friction
b) acts as a lubricant
c) acts as a cushion
d) all of the above
e) none of the above
d) all of the above
The connective tissue of the epicardium at the interventricular and coronary sulci generally contains
a) veins
b) arteries
c) fat
d) b and c
e) all of the above
e) all of the above
The coronary sulcus is a groove that
a) marks the border between the atria and ventricles
b) marks the boundary line between the right and left ventricles
c) marks the boundary line between the right and left atria
d) separates the coronary arteries from the coronary veins
a) marks the border between the atria and ventricles
Which chamber has the greatest musculature?
a) left atrium
b) right atrium
c) left ventricle
d) right ventricle
c) left ventricle
The autonomic heart beats approximately
a) 60 beats/min
b) 72 beats/min
c) 85 beats/min
d) 100 beats/min
d) 100 beats/min
Blood returning from the lungs enters the
a) left atrium
b) right atrium
c) left ventricle
d) right ventricle
a) left atrium
The right ventricle pumps blood to
a) the lungs
b) the left atrium
c) the left ventricle
d) the systemic circulation
a) the lungs
The atrioventricular valve that is located on the side of the heart that receives the superior vena cava is the
a) aortic valve
b) bicuspid valve
c) mitral valve
d) tricuspid valve
d) tricuspid valve
The pulmonary valve guards the entrance to the
a) pulmonary veins
b) pulmonary trunk
c) right ventricle
d) aorta
b) pulmonary trunk
The following is a list of vessels and structures that are associated with the heart.
1. right atrium
2. left atrium
3. right ventricle
4. left ventricle
5. vena cava
6. aorta
7. pulmonary trunk
8. pulmonary veins
What is the correct order for the flow of blood entering from the systemic circulation?
a) 1,7,3,8,2,4,6,5
b) 5,3,1,7,8,4,2,6
c) 5,1,3,8,7,2,4,6
d) 5,1,3,7,8,2,4,6
e) 1,2,7,8,3,4,6,5
d) 5,1,3,7,8,2,4,6
The first blood vessels to branch from the aorta are the _____ thereby nourishing the heart muscle itself.
a) coronary arteries
b) subclavian arteries
c) pulmonary arteries
d) carotid arteries
a) coronary arteries
The cardiac veins drain blood into the _____ and back into the right atrium.
a) coronary arteries
b) coronary sinus
c) aorta
d) pulmonary trunk
b) coronary sinus
The pacemaker cells of the heart are located in the
a) AV node
b) wall of the left ventricle
c) SA node
d) Purkinje fibers
c) SA node
The following are various components of the conducting system of the heart.
1. Purkinje fibers
2. His bundle
3. AV node
4. SA node
5. right and left bundle branches
The sequence in which an action potential would move through this system is
a) 3,5,4,2,1
b) 4,3,2,5,1
c) 4,2,3,5,1
d) 3,2,4,5,1
b) 4,3,2,5,1
The second heart sound (dubb) is heard when
a) the AV valves open
b) the semilunar valves close
c) the atria contract
d) blood enters the aorta
b) the semilunar valves close
Relaxation of the ventricles is called
a) ventricular systole
b) ventricular diastole
c) depolarization
d) none of the above
b) ventricular diastole
The P wave of the ECG corresponds to
a) ventricular systole
b) atrial systole
c) atrial diastole
d) none of the above
b) atrial systole
The QRS wave of the ECG above is the electrical signal corresponding to which mechanical event of the cardiac cycle?
a) ventricular diastole
b) atrial systole
c) ventricular systole
d) none of the above
c) ventricular systole
The T wave of the ECG represents
a) atrial depolarization
b) ventricular depolarization
c) atrial repolarization
d) ventricular repolarization
d) ventricular repolarization
During ventricular systole,
a) the ventricles are relaxed
b) the atria are contracting
c) blood is entering the ventricles
d) the AV valves are closed
d) the AV valves are closed
The mechanical and electrical occurrences of the heart from systole to systole is the
a) cardiac cycle
b) myocardial circuit
c) bradycardia
d) blood pressure
a) cardiac cycle
The volume of blood pumped by the heart per minute is referred to as
a) cardiac output
b) stroke volume
c) cardiac cycle
d) ejection fraction
a) cardiac output
The volume of blood ejected from the heart with each contraction is called
a) tidal volume
b) stroke volume
c) cardiac volume
d) cardiac reserve
b) stroke volume
Hormones of the adrenal gland associated with "fight or flight" response act on the _____ nervous system to increase heart rate.
a) autonomic
b) none of the above
c) parasympathetic
d) sympathetic
d) sympathetic
The practice of listening to body sounds is known as
a) palpation
b) lubb-dubb harmony
c) auditory resoning
d) auscultation
d) auscultation
From what you know, drugs that block calcium channels will
a) increase stroke volume
b) increase blood pressure
c) decrease the force of cardiac contraction
d) constrict coronary arteries
c) decrease the force of cardiac contraction
Enzymes found in circulating blood following a heart attack include the following EXCEPT
a) lactate hydrogenase
b) troponin
c) CK-MB
d) CK-BB
d) CK-BB
The smallest arterial branches are called the
a) venules
b) capillaries
c) veins
d) arterioles
d) arterioles
Venoconstriction _____ the amount of blood within the venous system, which _____ the volume in the arterial and capillary systems.
a) reduces; increases
b) decreases; doubles
c) doubles; decreases
d) increases; reduces
a) reduces; increases
Venous valves are responsible for
a) channeling blood away from the heart
b) regulating blood pressure in veins
c) preventing blood from reentering a ventricle
d) channeling blood toward the heart
d) channeling blood toward the heart
What vessels hold the largest percentage of the blood supply?
a) venule
b) artery
c) capillary
d) vein
d) vein
Blood moves forward through veins because of all of the following, EXCEPT
a) valves in the veins preventing the backward flow of blood
b) muscular compression
c) pumping by the smooth muscle in the wall of the vein
d) the respiratory pump
e) the pressure in the veins is lower than in the arteries
c) pumping by the smooth muscle in the wall of the vein
Total peripheral resistance is related to all of the following, EXCEPT the
a) length of a blood vessel
b) blood vessel diameter
c) osmolarity of interstitial fluids
d) turbulence
e) blood viscosity
c) osmolarity of interstitial fluids
Clinically, the term "blood pressure" usually refers to
a) capillary hydrostatic pressure
b) arterial pressure
c) arteriovenous pressure
d) peripheral pressure
b) arterial pressure
Each of the following factors would increase peripheral resistance, EXCEPT
a) elevated levels of epinephrine
b) irregularities in the vessel walls caused by plaques
c) increased sympathetic stimulation
d) vasodilation
d) vasodilation
If a person has a blood pressure of 120/90, his mean arterial pressure would be _____ mmHg.
a) 105
b) 90
c) 100
d) 210
e) 93
c) 100
The difference between the systolic and diastolic pressures is called the _____ pressure.
a) pulse
b) blood
c) critical closing
d) mean arterial
a) pulse
Each of the following will cause an increase in blood pressure EXCEPT
a) increased levels of aldosterone
b) increased levels of ADH (antidiuretic hormone)
c) increased levels of ANP (atrial natrurietic peptide)
d) increased levels of angiotensin II
c) increased levels of ANP (atrial natrurietic peptide)
Students also viewed