BIO 322 Lecture Exam 1 Questions With Complete
Solutions
A patient comes to the emergency room with numbness on 1
side of her face, has trouble speaking, and 1 eyelid is drooping.
She is about 60 years old. She is immediately treated for stroke
and given thrombolytic therapy. This therapy will attempt to
dissolve blood clots, and prevent more clotting. What do you
predict will be done to her blood?
A. The parasympathetic nervous system will be inhibited to
reduce stress.
B. The concentrations of vitamin K and Ca2+, key components
in clotting, will be reduced in plasma.
C. The extrinsic pathway will be inhibited by blocking
conversion of fibrin to fibrinogen.
D. The intrinsic pathway will be inhibited using TPA, tissue
plasminogen activator. Correct Answers B. The concentrations
of vitamin K and Ca2+, key components in clotting, will be
reduced in plasma.
A transfusion of serum would differ from a transfusion of saline
in that
A. the hematocrit would increase after serum transfusion
because formed elements are a component of serum.
B. the oncotic pressure of the blood would not change after
serum transfusion, because serum has many proteins and saline
does not. (Oncotic pressure is the osmotic pressure that results
from plasma proteins)
C. the number of red blood cells in the blood would decrease
less with serum compared to interstitial fluid.
,D. Blood clotting would be enhanced with serum because it
contains fibrinogen. Correct Answers B. the oncotic pressure of
the blood would not change after serum transfusion, because
serum has many proteins and saline does not. (Oncotic pressure
is the osmotic pressure that results from plasma proteins.)
Albumins
A. Account for ~30% of the plasma proteins. They function as
immunoglobulins which attack foreign proteins, and also
transport hormones.
B.Account for ~70% of the plasma proteins. Some function as
immunoglobulins which attack foreign proteins, and others may
transport apolipoproteins.
C. Account for ~70% of the plasma proteins. They function as
immunoglobulins which attack foreign proteins, and also
transport heme during red blood cell recycling.
D. Are the most abundant plasma protein and may be the major
contributor of the osmotic pressure of plasma. Correct Answers
D. Are the most abundant plasma protein and may be the major
contributor of the osmotic pressure of plasma
Autonomic innervation of the heart modulates rate. Select the
true statement.
A. the sympathetic nervous system use the neurotransmitter
ACh which hyper polarizes the SA node, slowing the heart rate
B. the parasympathetic nervous system uses the neurotransmitter
epinephrine which hyperpolarizes the SA node and slows heart
rate
C. the sympathetic nervous system uses the transmitter
epinephrine which depolarizes the SA node and increases heart
rate
, D. the parasympathetic nervous system uses the transmitter
epinephrine which depolarizes the SA node and increases heart
rate Correct Answers C. the sympathetic nervous system uses
the transmitter epinephrine which depolarizes the SA node and
increases heart rate
Cardiac muscle cells and skeletal muscle cells are both
contractile, but there are differences as well. Select the one
FALSE statement.
A. Cardiac and skeletal muscle cells contract when intracellular
calcium rises
B. Cardiac muscle cells, but not skeletal muscle cells, are
interconnected by intercalated discs
C. Skeletal muscle cells usually have sustained contractions but
cardiac muscle cells have brief twitches Correct Answers C.
Skeletal muscle cells usually have sustained contractions but
cardiac muscle cells have brief twitches.
Comparing plasma and interstitial fluid,
A. That concentration of small solutes, like Na+, Ca2+, and K+
is identical
B. The O2 concentration is identical because oxygen is small
and diffuses easily across blood vessels.
C. The total amount of Na+ is identical.
D. They are identical in most aspects except for endocrine
substances which stay in the vascular space. Correct Answers
A. That concentration of small solutes, like Na+, Ca2+, and K+
is identical
Comparing plasma to interstitial fluid:
Solutions
A patient comes to the emergency room with numbness on 1
side of her face, has trouble speaking, and 1 eyelid is drooping.
She is about 60 years old. She is immediately treated for stroke
and given thrombolytic therapy. This therapy will attempt to
dissolve blood clots, and prevent more clotting. What do you
predict will be done to her blood?
A. The parasympathetic nervous system will be inhibited to
reduce stress.
B. The concentrations of vitamin K and Ca2+, key components
in clotting, will be reduced in plasma.
C. The extrinsic pathway will be inhibited by blocking
conversion of fibrin to fibrinogen.
D. The intrinsic pathway will be inhibited using TPA, tissue
plasminogen activator. Correct Answers B. The concentrations
of vitamin K and Ca2+, key components in clotting, will be
reduced in plasma.
A transfusion of serum would differ from a transfusion of saline
in that
A. the hematocrit would increase after serum transfusion
because formed elements are a component of serum.
B. the oncotic pressure of the blood would not change after
serum transfusion, because serum has many proteins and saline
does not. (Oncotic pressure is the osmotic pressure that results
from plasma proteins)
C. the number of red blood cells in the blood would decrease
less with serum compared to interstitial fluid.
,D. Blood clotting would be enhanced with serum because it
contains fibrinogen. Correct Answers B. the oncotic pressure of
the blood would not change after serum transfusion, because
serum has many proteins and saline does not. (Oncotic pressure
is the osmotic pressure that results from plasma proteins.)
Albumins
A. Account for ~30% of the plasma proteins. They function as
immunoglobulins which attack foreign proteins, and also
transport hormones.
B.Account for ~70% of the plasma proteins. Some function as
immunoglobulins which attack foreign proteins, and others may
transport apolipoproteins.
C. Account for ~70% of the plasma proteins. They function as
immunoglobulins which attack foreign proteins, and also
transport heme during red blood cell recycling.
D. Are the most abundant plasma protein and may be the major
contributor of the osmotic pressure of plasma. Correct Answers
D. Are the most abundant plasma protein and may be the major
contributor of the osmotic pressure of plasma
Autonomic innervation of the heart modulates rate. Select the
true statement.
A. the sympathetic nervous system use the neurotransmitter
ACh which hyper polarizes the SA node, slowing the heart rate
B. the parasympathetic nervous system uses the neurotransmitter
epinephrine which hyperpolarizes the SA node and slows heart
rate
C. the sympathetic nervous system uses the transmitter
epinephrine which depolarizes the SA node and increases heart
rate
, D. the parasympathetic nervous system uses the transmitter
epinephrine which depolarizes the SA node and increases heart
rate Correct Answers C. the sympathetic nervous system uses
the transmitter epinephrine which depolarizes the SA node and
increases heart rate
Cardiac muscle cells and skeletal muscle cells are both
contractile, but there are differences as well. Select the one
FALSE statement.
A. Cardiac and skeletal muscle cells contract when intracellular
calcium rises
B. Cardiac muscle cells, but not skeletal muscle cells, are
interconnected by intercalated discs
C. Skeletal muscle cells usually have sustained contractions but
cardiac muscle cells have brief twitches Correct Answers C.
Skeletal muscle cells usually have sustained contractions but
cardiac muscle cells have brief twitches.
Comparing plasma and interstitial fluid,
A. That concentration of small solutes, like Na+, Ca2+, and K+
is identical
B. The O2 concentration is identical because oxygen is small
and diffuses easily across blood vessels.
C. The total amount of Na+ is identical.
D. They are identical in most aspects except for endocrine
substances which stay in the vascular space. Correct Answers
A. That concentration of small solutes, like Na+, Ca2+, and K+
is identical
Comparing plasma to interstitial fluid:
