EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ |
CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam
OBJECTIVE ASSESSMENT - EXAM
EXAM 2 ANATOMY & PHYSIOLOGY II
EXAM 2026/2027 GUIDE GRADED A+ |
CHAMBERLAIN **2026/2027** --
2026/2027 Official Exam
75 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Cardiovascular System Urinary System
Respiratory System Reproductive System
Digestive System
COVER PAGE - 1
, SECTION 1 | Cardiovascular System | Q1-Q15 | EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027
GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam
Q1 Question 1 of 75
A 68-year-old patient undergoing cardiac surgery has his pericardial sac opened by the surgeon. The
surgeon notes a thick, fibrous outer layer and a thin, serous inner layer. The inner serous layer is
itself divided into two parts that are normally separated by a small volume of lubricating fluid. Which
structural arrangement characterizes these two serous layers?
A. Both layers line the inner surface of the fibrous pericardium directly
B. One layer lines the inner surface of the fibrous pericardium while the other adheres to the heart
surface
C. Both layers adhere directly to the myocardium without any intervening space
D. One layer covers the fibrous pericardium externally and the other covers the lungs
Correct Answer: B
Rationale:
The serous pericardium consists of a parietal layer that lines the inner surface of the fibrous pericardium and a
visceral layer (epicardium) that adheres directly to the heart surface, with the pericardial cavity between them
containing lubricating fluid. Both layers do not line the fibrous pericardium, they are not both on the myocardium,
and the pericardium is not associated with the lungs.
Q2 Question 2 of 75
A cardiologist explains to a patient that deoxygenated blood returning from the body enters the right
atrium, passes through a specific valve into the right ventricle, and is then pumped through the
pulmonary valve into the pulmonary trunk toward the lungs. Which valve separates the right atrium
from the right ventricle?
A. The aortic semilunar valve, which prevents backflow from the aorta into the left ventricle
B. The mitral (bicuspid) valve, which guards the opening between the left atrium and left ventricle
C. The pulmonary semilunar valve, which prevents backflow from the pulmonary trunk into the right
ventricle
D. The tricuspid valve, which consists of three cusps and guards the right atrioventricular opening
Correct Answer: D
Rationale:
The tricuspid valve, located between the right atrium and right ventricle, has three cusps and prevents backflow
of blood from the right ventricle into the right atrium during ventricular contraction. The aortic and pulmonary
semilunar valves are located at the exits of the left and right ventricles respectively, and the mitral valve is on the
left side of the heart.
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 2 of 40
, Q3 Question 3 of 75
An electrocardiogram technician places electrodes on a patient's chest and observes a regular
rhythm originating from the sinoatrial node at 72 beats per minute. The SA node depolarizes before
the atrial muscle contracts, and this electrical event precedes the atrial contraction that pushes blood
into the ventricles. Why is the SA node referred to as the heart's natural pacemaker?
A. It has the fastest inherent rate of depolarization among all cardiac pacemaker cells
B. It is the only structure in the heart capable of generating action potentials
C. It receives direct neural innervation from the vagus nerve that sets the heart rate
D. It is located in the left ventricle where the strongest contractions originate
Correct Answer: A
Rationale:
The SA node has the fastest intrinsic depolarization rate (60-100 bpm) of all cardiac pacemaker cells, which
allows it to override slower latent pacemakers in the AV node and Purkinje fibers and set the normal heart
rhythm. Other cardiac cells can generate action potentials but at slower rates, the vagus nerve modulates rather
than initiates the rate, and the SA node is located in the right atrium not the left ventricle.
Q4 Question 4 of 75
A medical student reviewing an ECG tracing identifies the P wave as representing atrial
depolarization, the QRS complex as ventricular depolarization, and the T wave as ventricular
repolarization. The student notices that the T wave appears much later than the QRS complex. In a
healthy heart at rest, what is the approximate duration of one complete cardiac cycle from the
beginning of one P wave to the beginning of the next?
A. Approximately 0.2 seconds, corresponding to a heart rate of 300 beats per minute
B. Approximately 0.5 seconds, corresponding to a heart rate of 120 beats per minute
C. Approximately 0.83 seconds, corresponding to a heart rate of 72 beats per minute
D. Approximately 1.5 seconds, corresponding to a heart rate of 40 beats per minute
Correct Answer: C
Rationale:
At a normal resting heart rate of 72 bpm, one cardiac cycle lasts approximately 60/72 = 0.83 seconds, measured
from the onset of one P wave to the onset of the next. A 0.2-second cycle would produce 300 bpm which is
physiologically impossible for the human heart, 0.5 seconds corresponds to 120 bpm which is tachycardia, and
1.5 seconds corresponds to 40 bpm which is bradycardia.
Q5 Question 5 of 75
A 55-year-old man is told by his physician that his left ventricular wall is abnormally thick, causing
increased stiffness and reduced filling during diastole. The physician explains that the heart goes
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 3 of 40
, through two main phases in each cycle: a period of relaxation and filling followed by a period of
contraction and ejection. During which phase does the majority of ventricular filling occur passively?
A. During ventricular systole when the AV valves are open and semilunar valves are closed
B. During early ventricular diastole when the AV valves open and blood flows passively from atria to
ventricles
C. During atrial systole when the atria contract and push the remaining 25 to 30 percent of blood into
the ventricles
D. During isovolumetric contraction when both sets of valves are closed and ventricular pressure rises
Correct Answer: B
Rationale:
The majority of ventricular filling (approximately 70-75%) occurs passively during early diastole when the AV
valves open and blood flows from the higher-pressure atria into the relaxed ventricles. Systole is the contraction
phase, atrial systole contributes only the final 25-30%, and isovolumetric contraction involves no blood flow
because all valves are closed.
Q6 Question 6 of 75
A nurse measures a patient's blood pressure at 118/76 mmHg. The patient asks what the two
numbers represent, and the nurse explains that blood pressure fluctuates throughout the cardiac
cycle. What does the lower number (76 mmHg) specifically indicate about the arterial pressure?
A. The peak pressure in the aorta during ventricular ejection
B. The pressure remaining in the arteries when the semilunar valves snap shut
C. The average arterial pressure throughout the entire cardiac cycle
D. The minimum arterial pressure that occurs just before ventricular ejection begins
Correct Answer: D
Rationale:
The diastolic pressure (76 mmHg) represents the minimum arterial pressure, occurring during ventricular
diastole just before the next ventricular ejection when arterial pressure is at its lowest. The systolic pressure is
the peak during ejection, mean arterial pressure is a calculated average, and the pressure when semilunar
valves close is the dicrotic notch which is a brief event not the sustained minimum.
Q7 Question 7 of 75
A vascular surgeon compares the structure of an artery and a vein removed from the same patient
during a bypass procedure. She notes that the artery has a much thicker wall relative to its lumen,
with a prominent middle layer of smooth muscle and elastic tissue. The vein has a thinner wall, a
larger lumen, and contains valves. Which structural component is most responsible for the artery's
ability to withstand and buffer the high pressures generated by ventricular ejection?
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 4 of 40
CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam
OBJECTIVE ASSESSMENT - EXAM
EXAM 2 ANATOMY & PHYSIOLOGY II
EXAM 2026/2027 GUIDE GRADED A+ |
CHAMBERLAIN **2026/2027** --
2026/2027 Official Exam
75 100%
QUESTIONS VERIFIED ANSWERS EDITION
TOPICS COVERED
Cardiovascular System Urinary System
Respiratory System Reproductive System
Digestive System
COVER PAGE - 1
, SECTION 1 | Cardiovascular System | Q1-Q15 | EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027
GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam
Q1 Question 1 of 75
A 68-year-old patient undergoing cardiac surgery has his pericardial sac opened by the surgeon. The
surgeon notes a thick, fibrous outer layer and a thin, serous inner layer. The inner serous layer is
itself divided into two parts that are normally separated by a small volume of lubricating fluid. Which
structural arrangement characterizes these two serous layers?
A. Both layers line the inner surface of the fibrous pericardium directly
B. One layer lines the inner surface of the fibrous pericardium while the other adheres to the heart
surface
C. Both layers adhere directly to the myocardium without any intervening space
D. One layer covers the fibrous pericardium externally and the other covers the lungs
Correct Answer: B
Rationale:
The serous pericardium consists of a parietal layer that lines the inner surface of the fibrous pericardium and a
visceral layer (epicardium) that adheres directly to the heart surface, with the pericardial cavity between them
containing lubricating fluid. Both layers do not line the fibrous pericardium, they are not both on the myocardium,
and the pericardium is not associated with the lungs.
Q2 Question 2 of 75
A cardiologist explains to a patient that deoxygenated blood returning from the body enters the right
atrium, passes through a specific valve into the right ventricle, and is then pumped through the
pulmonary valve into the pulmonary trunk toward the lungs. Which valve separates the right atrium
from the right ventricle?
A. The aortic semilunar valve, which prevents backflow from the aorta into the left ventricle
B. The mitral (bicuspid) valve, which guards the opening between the left atrium and left ventricle
C. The pulmonary semilunar valve, which prevents backflow from the pulmonary trunk into the right
ventricle
D. The tricuspid valve, which consists of three cusps and guards the right atrioventricular opening
Correct Answer: D
Rationale:
The tricuspid valve, located between the right atrium and right ventricle, has three cusps and prevents backflow
of blood from the right ventricle into the right atrium during ventricular contraction. The aortic and pulmonary
semilunar valves are located at the exits of the left and right ventricles respectively, and the mitral valve is on the
left side of the heart.
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 2 of 40
, Q3 Question 3 of 75
An electrocardiogram technician places electrodes on a patient's chest and observes a regular
rhythm originating from the sinoatrial node at 72 beats per minute. The SA node depolarizes before
the atrial muscle contracts, and this electrical event precedes the atrial contraction that pushes blood
into the ventricles. Why is the SA node referred to as the heart's natural pacemaker?
A. It has the fastest inherent rate of depolarization among all cardiac pacemaker cells
B. It is the only structure in the heart capable of generating action potentials
C. It receives direct neural innervation from the vagus nerve that sets the heart rate
D. It is located in the left ventricle where the strongest contractions originate
Correct Answer: A
Rationale:
The SA node has the fastest intrinsic depolarization rate (60-100 bpm) of all cardiac pacemaker cells, which
allows it to override slower latent pacemakers in the AV node and Purkinje fibers and set the normal heart
rhythm. Other cardiac cells can generate action potentials but at slower rates, the vagus nerve modulates rather
than initiates the rate, and the SA node is located in the right atrium not the left ventricle.
Q4 Question 4 of 75
A medical student reviewing an ECG tracing identifies the P wave as representing atrial
depolarization, the QRS complex as ventricular depolarization, and the T wave as ventricular
repolarization. The student notices that the T wave appears much later than the QRS complex. In a
healthy heart at rest, what is the approximate duration of one complete cardiac cycle from the
beginning of one P wave to the beginning of the next?
A. Approximately 0.2 seconds, corresponding to a heart rate of 300 beats per minute
B. Approximately 0.5 seconds, corresponding to a heart rate of 120 beats per minute
C. Approximately 0.83 seconds, corresponding to a heart rate of 72 beats per minute
D. Approximately 1.5 seconds, corresponding to a heart rate of 40 beats per minute
Correct Answer: C
Rationale:
At a normal resting heart rate of 72 bpm, one cardiac cycle lasts approximately 60/72 = 0.83 seconds, measured
from the onset of one P wave to the onset of the next. A 0.2-second cycle would produce 300 bpm which is
physiologically impossible for the human heart, 0.5 seconds corresponds to 120 bpm which is tachycardia, and
1.5 seconds corresponds to 40 bpm which is bradycardia.
Q5 Question 5 of 75
A 55-year-old man is told by his physician that his left ventricular wall is abnormally thick, causing
increased stiffness and reduced filling during diastole. The physician explains that the heart goes
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 3 of 40
, through two main phases in each cycle: a period of relaxation and filling followed by a period of
contraction and ejection. During which phase does the majority of ventricular filling occur passively?
A. During ventricular systole when the AV valves are open and semilunar valves are closed
B. During early ventricular diastole when the AV valves open and blood flows passively from atria to
ventricles
C. During atrial systole when the atria contract and push the remaining 25 to 30 percent of blood into
the ventricles
D. During isovolumetric contraction when both sets of valves are closed and ventricular pressure rises
Correct Answer: B
Rationale:
The majority of ventricular filling (approximately 70-75%) occurs passively during early diastole when the AV
valves open and blood flows from the higher-pressure atria into the relaxed ventricles. Systole is the contraction
phase, atrial systole contributes only the final 25-30%, and isovolumetric contraction involves no blood flow
because all valves are closed.
Q6 Question 6 of 75
A nurse measures a patient's blood pressure at 118/76 mmHg. The patient asks what the two
numbers represent, and the nurse explains that blood pressure fluctuates throughout the cardiac
cycle. What does the lower number (76 mmHg) specifically indicate about the arterial pressure?
A. The peak pressure in the aorta during ventricular ejection
B. The pressure remaining in the arteries when the semilunar valves snap shut
C. The average arterial pressure throughout the entire cardiac cycle
D. The minimum arterial pressure that occurs just before ventricular ejection begins
Correct Answer: D
Rationale:
The diastolic pressure (76 mmHg) represents the minimum arterial pressure, occurring during ventricular
diastole just before the next ventricular ejection when arterial pressure is at its lowest. The systolic pressure is
the peak during ejection, mean arterial pressure is a calculated average, and the pressure when semilunar
valves close is the dicrotic notch which is a brief event not the sustained minimum.
Q7 Question 7 of 75
A vascular surgeon compares the structure of an artery and a vein removed from the same patient
during a bypass procedure. She notes that the artery has a much thicker wall relative to its lumen,
with a prominent middle layer of smooth muscle and elastic tissue. The vein has a thinner wall, a
larger lumen, and contains valves. Which structural component is most responsible for the artery's
ability to withstand and buffer the high pressures generated by ventricular ejection?
EXAM 2 ANATOMY & PHYSIOLOGY II EXAM 2026/2027 GUIDE GRADED A+ | CHAMBERLAIN **2026/2027** -- 2026/2027 Official Exam | 2026/2027 | Passing Score: 80% | Page 4 of 40
