A&P Exam 2 Questions With Complete Solutions
A class I MHC protein presents an antigen. What type of cell is
likely presenting and to what type of cell would it be presented?
An antigen-presenting cell would be presented to a CD4 cell.
Any nucleated cell would be presented to a CD8 cell.
An antigen-presenting cell would be presented to a T helper
cell.
Any nucleated cell would be presented to a CD4 cell. Correct
Answers Any nucleated cell would be presented to a CD8 cell.
A drug that restricts the activity of angiotensin converting
enzyme (ACE) would like result in all of the following
physiologic changes but one. Which of the following is the least
likely to result from a drug blocking ACE activity?
lower levels of circulating aldosterone and lowered sodium
reabsorption
increased urine output due to reduction in circulating antidiuretic
hormone (ADH)
decreased peripheral resistance due to decreased vasomotor tone
increased thirst and higher blood volume Correct Answers
increased thirst and higher blood volume
A person suddenly gaining significant amounts of adipose tissue
can expect all of the following physiological changes except
one. Which of the following is least likely to occur with a
sudden and significant gain in adipose tissue?
higher peripheral resistance and higher blood pressure
,increased risk of developing atherosclerosis
increased angiogenesis and higher peripheral resistance
lower heart rate and reduced blood flow Correct Answers
lower heart rate and reduced blood flow
A person who has AIDS contracts rare and often life-threatening
infections because their helper T cell count is so low. Which of
the following components of the immune response still respond
to antigen despite the low helper T cell count?
Clonal selection of B cells
Apoptosis of infected host cells
Clonal expansion and antibody production
Activation of cytotoxic T cells Correct Answers Clonal
selection of B cells
A thrombus (blood clot) in the first branch of the arch of the
aorta would affect the flow of blood to the ________.
left side of the head and neck
left upper arm
right side of the head and neck and right upper arm
myocardium of the heart Correct Answers right side of the
head and neck and right upper arm
About 3 liters of fluid are lost to the tissue spaces every 24 hours
and are returned to the bloodstream as lymph.
True
False Correct Answers True
Activated CD8 cells become __________.
,cytotoxic T cells
B cells
NK cells
helper T cells Correct Answers cytotoxic T cells
Adaptive defenses require us to use what molecules that can
identify whether a cell is a self or nonself cell?
complement proteins
antigens
antibodies
interferons Correct Answers antibodies
Adjacent cells in lymphatic capillaries overlap each other
loosely. What is the unique structural modification that increases
their permeability?
Cellular overlap at the beginning of a lymphatic capillary.
lacteals
trabeculae
minivalves
fibroblasts Correct Answers minivalves
After surgical removal of the spleen (i.e., a splenectomy), some
other organs take over most of its functions. Which of the
following spleen functions in the adult can not be performed by
bone marrow?
immune surveillance
, erythropoiesis
removal of aged and damaged red blood cells from the blood
storage of platelets Correct Answers removal of aged and
damaged red blood cells from the blood
Arteries always carry oxygenated blood away from the heart.
True
False Correct Answers False
Arteries that are closer to the heart _______.
must be able to withstand pressure changes
have more elastic tissue and must be able to withstand pressure
changes
have less elastic tissue and must be able to withstand pressure
changes
have more elastic tissue
have less elastic tissue Correct Answers have more elastic
tissue and must be able to withstand pressure changes
Besides lymph nodes, where would you expect to find
proliferating (dividing) B cells?
in the brain
in the spleen
in the thyroid
in the skin Correct Answers in the spleen
Binding of an eosinophil to an antibody-coated parasitic worm
involves binding of the antibody's stem region to a(n) ______.
A class I MHC protein presents an antigen. What type of cell is
likely presenting and to what type of cell would it be presented?
An antigen-presenting cell would be presented to a CD4 cell.
Any nucleated cell would be presented to a CD8 cell.
An antigen-presenting cell would be presented to a T helper
cell.
Any nucleated cell would be presented to a CD4 cell. Correct
Answers Any nucleated cell would be presented to a CD8 cell.
A drug that restricts the activity of angiotensin converting
enzyme (ACE) would like result in all of the following
physiologic changes but one. Which of the following is the least
likely to result from a drug blocking ACE activity?
lower levels of circulating aldosterone and lowered sodium
reabsorption
increased urine output due to reduction in circulating antidiuretic
hormone (ADH)
decreased peripheral resistance due to decreased vasomotor tone
increased thirst and higher blood volume Correct Answers
increased thirst and higher blood volume
A person suddenly gaining significant amounts of adipose tissue
can expect all of the following physiological changes except
one. Which of the following is least likely to occur with a
sudden and significant gain in adipose tissue?
higher peripheral resistance and higher blood pressure
,increased risk of developing atherosclerosis
increased angiogenesis and higher peripheral resistance
lower heart rate and reduced blood flow Correct Answers
lower heart rate and reduced blood flow
A person who has AIDS contracts rare and often life-threatening
infections because their helper T cell count is so low. Which of
the following components of the immune response still respond
to antigen despite the low helper T cell count?
Clonal selection of B cells
Apoptosis of infected host cells
Clonal expansion and antibody production
Activation of cytotoxic T cells Correct Answers Clonal
selection of B cells
A thrombus (blood clot) in the first branch of the arch of the
aorta would affect the flow of blood to the ________.
left side of the head and neck
left upper arm
right side of the head and neck and right upper arm
myocardium of the heart Correct Answers right side of the
head and neck and right upper arm
About 3 liters of fluid are lost to the tissue spaces every 24 hours
and are returned to the bloodstream as lymph.
True
False Correct Answers True
Activated CD8 cells become __________.
,cytotoxic T cells
B cells
NK cells
helper T cells Correct Answers cytotoxic T cells
Adaptive defenses require us to use what molecules that can
identify whether a cell is a self or nonself cell?
complement proteins
antigens
antibodies
interferons Correct Answers antibodies
Adjacent cells in lymphatic capillaries overlap each other
loosely. What is the unique structural modification that increases
their permeability?
Cellular overlap at the beginning of a lymphatic capillary.
lacteals
trabeculae
minivalves
fibroblasts Correct Answers minivalves
After surgical removal of the spleen (i.e., a splenectomy), some
other organs take over most of its functions. Which of the
following spleen functions in the adult can not be performed by
bone marrow?
immune surveillance
, erythropoiesis
removal of aged and damaged red blood cells from the blood
storage of platelets Correct Answers removal of aged and
damaged red blood cells from the blood
Arteries always carry oxygenated blood away from the heart.
True
False Correct Answers False
Arteries that are closer to the heart _______.
must be able to withstand pressure changes
have more elastic tissue and must be able to withstand pressure
changes
have less elastic tissue and must be able to withstand pressure
changes
have more elastic tissue
have less elastic tissue Correct Answers have more elastic
tissue and must be able to withstand pressure changes
Besides lymph nodes, where would you expect to find
proliferating (dividing) B cells?
in the brain
in the spleen
in the thyroid
in the skin Correct Answers in the spleen
Binding of an eosinophil to an antibody-coated parasitic worm
involves binding of the antibody's stem region to a(n) ______.
