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Physiology Test 18-19 Questions and Answers
(100% Correct Answers)
When viewing a dissected heart, it is easy to visually discern the right and left
ventricles by
Ans: noticing the thickness of the ventricle walls
Select the correct statement about the structure of the heart wall.
Ans: The myocardium is the layer of the heart that actually contracts.
Blood within the pulmonary veins returns to the
Ans: left atrium
Auricles slightly increase blood volume in the ventricles.
Ans: False
Select the correct statement about the heart valves.
Ans: The atrioventricular (AV) valves prevent backflow of blood into the atria during
ventricular contraction.
Which vessel(s) of the heart receive(s) blood from the right ventricle?
Ans: pulmonary trunk
Which of the following transports oxygen-rich blood?
Ans: pulmonary vein
If the aorta and pulmonary trunk were switched, oxygen rich blood would be pumped
from the left ventricle to the lungs.
Ans: True
The left ventricular wall of the heart is thicker than the right wall in order to
Ans: pump blood with greater pressure
The term for pain associated with deficient blood delivery to the heart that may be
caused by the transient spasm of coronary arteries is
Ans: angina pectoris
The myocardium receives its blood supply from the coronary arteries.
The myocardium receives its blood supply from the coronary arteries.
True
False
Ans: False
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Anastomoses among coronary arterial branches provide collateral routes for blood
delivery to the heart muscle
Ans: True
Tissues damaged by myocardial infarction are replaced by connective tissue.
Ans: True
The left side of the heart pumps the same volume of blood as the right.
Ans: True
Arterial blood supply to heart muscle is continuous whether the heart is in systole or
diastole.
Ans: False
During contraction of heart muscle cells
Ans: some calcium enters the cell from the extracellular space and triggers the
release of larger amounts of calcium from intracellular stores
If cardiac muscle is deprived of its normal blood supply, damage would primarily
result from
Ans: decreased delivery of oxygen
Compared to skeletal muscle, cardiac muscle
Ans: has gap junctions that allow it to act as a functional syncytium
Cardiac muscle has more mitochondria and depends less on a continual supply of
oxygen than does skeletal muscle.
Ans: False
Which of the following is NOT part of the intrinsic conduction system of the heart
Ans: atrioventricular (AV) valve
An electrocardiogram (ECG) provides direct information about valve function.
Ans: False
The P wave of a normal electrocardiogram indicates
Ans: atrial depolarization
Autonomic regulation of heart rate is via two reflex centers found in the pons.
Ans: False
Normal heart sounds are caused by which of the following events?
Ans: closure of the heart valves
Which of the events below does NOT occur when the semilunar valves are open
Ans: Ventricles are in diastole.
Physiology Test 18-19 Questions and Answers
(100% Correct Answers)
When viewing a dissected heart, it is easy to visually discern the right and left
ventricles by
Ans: noticing the thickness of the ventricle walls
Select the correct statement about the structure of the heart wall.
Ans: The myocardium is the layer of the heart that actually contracts.
Blood within the pulmonary veins returns to the
Ans: left atrium
Auricles slightly increase blood volume in the ventricles.
Ans: False
Select the correct statement about the heart valves.
Ans: The atrioventricular (AV) valves prevent backflow of blood into the atria during
ventricular contraction.
Which vessel(s) of the heart receive(s) blood from the right ventricle?
Ans: pulmonary trunk
Which of the following transports oxygen-rich blood?
Ans: pulmonary vein
If the aorta and pulmonary trunk were switched, oxygen rich blood would be pumped
from the left ventricle to the lungs.
Ans: True
The left ventricular wall of the heart is thicker than the right wall in order to
Ans: pump blood with greater pressure
The term for pain associated with deficient blood delivery to the heart that may be
caused by the transient spasm of coronary arteries is
Ans: angina pectoris
The myocardium receives its blood supply from the coronary arteries.
The myocardium receives its blood supply from the coronary arteries.
True
False
Ans: False
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Anastomoses among coronary arterial branches provide collateral routes for blood
delivery to the heart muscle
Ans: True
Tissues damaged by myocardial infarction are replaced by connective tissue.
Ans: True
The left side of the heart pumps the same volume of blood as the right.
Ans: True
Arterial blood supply to heart muscle is continuous whether the heart is in systole or
diastole.
Ans: False
During contraction of heart muscle cells
Ans: some calcium enters the cell from the extracellular space and triggers the
release of larger amounts of calcium from intracellular stores
If cardiac muscle is deprived of its normal blood supply, damage would primarily
result from
Ans: decreased delivery of oxygen
Compared to skeletal muscle, cardiac muscle
Ans: has gap junctions that allow it to act as a functional syncytium
Cardiac muscle has more mitochondria and depends less on a continual supply of
oxygen than does skeletal muscle.
Ans: False
Which of the following is NOT part of the intrinsic conduction system of the heart
Ans: atrioventricular (AV) valve
An electrocardiogram (ECG) provides direct information about valve function.
Ans: False
The P wave of a normal electrocardiogram indicates
Ans: atrial depolarization
Autonomic regulation of heart rate is via two reflex centers found in the pons.
Ans: False
Normal heart sounds are caused by which of the following events?
Ans: closure of the heart valves
Which of the events below does NOT occur when the semilunar valves are open
Ans: Ventricles are in diastole.
