HESI A2 Exam
V1 With
A&P.pdf
HESI A2
Exam V1 With
A&P.pdf
Have you ever wondered why the whistle of a traveling, distant
locomotive predicts its approach several yards before anyone actually
sees it? Or why an oncoming ambulance’s screaming siren is heard
momentarily several feet before the ambulance comes into full view,
before it passes you, and why its siren is still heard faintly well after
the ambulance is out of sight?
What you are witnessing is a scientific phenomenon known as the
Doppler Effect. What takes place is truly remarkable. In both of these
instances, when the train or ambulance moves toward the sound
waves in front of it, the sound waves are pulled closer together and
have a higher frequency. In either instance, the listener positioned in
front of the moving object hears a higher pitch. The ambulance and
locomotive are progressively moving away from the sound waves
behind them, causing the waves to be farther apart and to have a
lower frequency. These fast- approaching modes of transportation
distance themselves past the listener, who hears a lower pitch.
, HESI A2 Exam
V1 With
A&P.pdf
1. What is the best summary of this passage?
A. The body’s pump, the heart, regulates the flow of oxygen to
all cells of the body and discards waste products that include
carbon dioxide. The kidneys help in this process by absorbing
salts and water.
B. There are several systems to maintain the natural functions and
processes of the body. One system is the cardiovascular system,
which regulates blood pressure through baroreceptors,
chemoreceptors, and the kidneys.
C. Baroreceptors help regulate blood pressure and are found
along the wall of the arteries. Baroreceptors send out impulses to
the heart, arteries, and veins, resulting in the lowering or raising of
blood pressure.
D. Chemoreceptors monitor changes in oxygen level that affect
blood pressure.
2. What is a major difference in the way baroreceptors and
chemoreceptors work from the way the kidneys work?
A. Baroreceptors and chemoreceptors both work within the wall of
the arteries sending out impulses to raise or lower blood pressure,
whereas the kidneys help control blood volume.
B. Baroreceptors and chemoreceptors both work to help maintain
blood volume, whereas the kidneys take care of salts, water, and
waste removal.
C. Baroreceptors and chemoreceptors must work together to
control blood pressure, whereas the kidneys work with the
adrenal cortex.
D. Baroreceptors and chemoreceptors are both located near the
adrenal cortex, whereas the kidneys are located near the heart.
Questions 19 to 24 pertain to the following passage:
The immune system is a network of cells, tissues, and organs that
, HESI A2 Exam
V1 With
A&P.pdf
defends the body against attacks by foreign invaders. These invaders
are primarily microbes—tiny organisms such as bacteria, parasites,
and fungi—that can cause infections. Viruses also cause infections,
but are too primitive to be classified as living organisms. The human
body provides an ideal environment for many microbes. It is the
immune system’s job to keep the microbes out or destroy them.
The immune system is amazingly complex. It can recognize and
remember millions of different enemies, and it can secrete fluids and
cells to wipe out nearly all of them. The secret to its success is an
elaborate and dynamic communications network. Millions of cells,
organized into sets and subsets, gather and transfer information in
response to an infection. Once immune cells receive the alarm, they
produce powerful chemicals that help to regulate their own growth
and behavior, enlist other immune cells, and direct the new recruits
to trouble spots.
, HESI A2 Exam
V1 With
A&P.pdf
Although scientists have learned much about the immune system,
they continue to puzzle over how the body destroys invading
microbes, infected cells, and tumors without harming healthy
V1 With
A&P.pdf
HESI A2
Exam V1 With
A&P.pdf
Have you ever wondered why the whistle of a traveling, distant
locomotive predicts its approach several yards before anyone actually
sees it? Or why an oncoming ambulance’s screaming siren is heard
momentarily several feet before the ambulance comes into full view,
before it passes you, and why its siren is still heard faintly well after
the ambulance is out of sight?
What you are witnessing is a scientific phenomenon known as the
Doppler Effect. What takes place is truly remarkable. In both of these
instances, when the train or ambulance moves toward the sound
waves in front of it, the sound waves are pulled closer together and
have a higher frequency. In either instance, the listener positioned in
front of the moving object hears a higher pitch. The ambulance and
locomotive are progressively moving away from the sound waves
behind them, causing the waves to be farther apart and to have a
lower frequency. These fast- approaching modes of transportation
distance themselves past the listener, who hears a lower pitch.
, HESI A2 Exam
V1 With
A&P.pdf
1. What is the best summary of this passage?
A. The body’s pump, the heart, regulates the flow of oxygen to
all cells of the body and discards waste products that include
carbon dioxide. The kidneys help in this process by absorbing
salts and water.
B. There are several systems to maintain the natural functions and
processes of the body. One system is the cardiovascular system,
which regulates blood pressure through baroreceptors,
chemoreceptors, and the kidneys.
C. Baroreceptors help regulate blood pressure and are found
along the wall of the arteries. Baroreceptors send out impulses to
the heart, arteries, and veins, resulting in the lowering or raising of
blood pressure.
D. Chemoreceptors monitor changes in oxygen level that affect
blood pressure.
2. What is a major difference in the way baroreceptors and
chemoreceptors work from the way the kidneys work?
A. Baroreceptors and chemoreceptors both work within the wall of
the arteries sending out impulses to raise or lower blood pressure,
whereas the kidneys help control blood volume.
B. Baroreceptors and chemoreceptors both work to help maintain
blood volume, whereas the kidneys take care of salts, water, and
waste removal.
C. Baroreceptors and chemoreceptors must work together to
control blood pressure, whereas the kidneys work with the
adrenal cortex.
D. Baroreceptors and chemoreceptors are both located near the
adrenal cortex, whereas the kidneys are located near the heart.
Questions 19 to 24 pertain to the following passage:
The immune system is a network of cells, tissues, and organs that
, HESI A2 Exam
V1 With
A&P.pdf
defends the body against attacks by foreign invaders. These invaders
are primarily microbes—tiny organisms such as bacteria, parasites,
and fungi—that can cause infections. Viruses also cause infections,
but are too primitive to be classified as living organisms. The human
body provides an ideal environment for many microbes. It is the
immune system’s job to keep the microbes out or destroy them.
The immune system is amazingly complex. It can recognize and
remember millions of different enemies, and it can secrete fluids and
cells to wipe out nearly all of them. The secret to its success is an
elaborate and dynamic communications network. Millions of cells,
organized into sets and subsets, gather and transfer information in
response to an infection. Once immune cells receive the alarm, they
produce powerful chemicals that help to regulate their own growth
and behavior, enlist other immune cells, and direct the new recruits
to trouble spots.
, HESI A2 Exam
V1 With
A&P.pdf
Although scientists have learned much about the immune system,
they continue to puzzle over how the body destroys invading
microbes, infected cells, and tumors without harming healthy
