E109 Exam 2 Questions With Complete Solutions
"ECG" stands for
a) electrocardiogram
b) encephalocardiograph
c) endocopiogram
d) endocrinogram
e) ectocardiogram Correct Answers a (electrocardiogram)
A beta-blocker is an antagonist to NE in cardiac pacemaker cell
receptors. Therefore, administration of a beta-blocker will cause
a) an increase in the rate of action potentials in pacemaker cells
without affecting heart beat rate
b) an increase in the rate of action potentials in pacemaker cells
which will speed up heart beat rate
c) an increase in the rate of action potentials in pacemaker cells
which will slow down heart beat rate
d) a decrease in the rate of action potentials in pacemaker cells
without affecting heart beat rate
e) a decrease in the rate of action potentials in pacemaker cells
which will slow down heart beat rate Correct Answers e (a
decrease in the rate of action potentials in pacemaker cells which
will slow down heart beat rate)
A child is eating round candies and accidentally inhaled one
which got stuck down
his airway blocking his left bronchus. Which of the following
will describe the
,changes that occur? His left lung alveolar PCO2 will
_________, his left lung
alveolar PO2 will __________, and his systemic arterial PO2
will __________.
a) increase, increase, increase
b) increase, increase, decrease
c) decrease, decrease, decrease,
d) decrease, increase, decrease
e) increase, decrease, decrease Correct Answers e (increase,
decrease, decrease)
A healthy young adult stands up from a supine (lying down)
position. Which of the following sets of cardiovascular changes
is most likely to occur? A(n) _____ in heart rate and a(n) _____
in total peripheral resistance.
a) increase, increase
b) increase, decrease
c) decrease, decrease
d) decrease, increase Correct Answers a (increase, increase)
A normal heart beat rate at rest is approximately ______, while a
normal stroke
volume is about _________.
a) 70 beats/minute, 70 ml
b) 70 beats/minute, 70 liters
c) 70 beats/second, 70 quarts
d) 7 beats/minute, 7 liters
,e) 70 beats/hour, 70 gallons Correct Answers a (70
beats/minute, 70 ml)
A particular blood vessel experiences a blood flow of 10ml per
minute. If this volume flow rate does NOT change, which of the
following would lead to an increase in the speed or velocity of
the blood passing through the vessel?
a) an increase in the diameter of the blood vessel
b) a decrease in the radius of the blood vessel
c) an increase in the length of the blood vessel
d) a decrease in the length of the blood vessel
e) an increase in the viscosity of the blood Correct Answers b
(a decrease in the radius of the blood vessel)
A particular blood vessel has an endothelial layer, but no elastic
tissue, smooth muscle, fibrous tissue, or valves. This vessel is
a) an artery
b) an arteriole
c) a capillary
d) a venule
e) a vein Correct Answers c (a capillary)
A particular blood vessel has an endothelial layer, elastic tissue,
smooth muscle, fibrous tissue, and valves. This vessel is
a) an artery
b) an arteriole
c) a capillary
d) a venule
, e) a vein Correct Answers e (a vein)
A sensory neuron that sends information about a visual stimulus
to the brain is in the
a) central nervous system
b) autonomic nervous system
c) somatic motor division
d) afferent division
e) enteric nervous sytem Correct Answers d (afferent division)
Air moves into the lungs because contraction of the diaphragm
a) increases the volume of the pleural cavity, lowering the
pressure of the lungs
b) decreases the volume of the pleural cavity, lowering the
pressure of the lungs
c) increases the volume of the pleural cavity, increasing the
pressure in the lungs
d) decreases the volume of the pleural cavity, increasing the
pressure in the lungs Correct Answers a (increases the volume
of the pleural cavity, lowering the pressure of the lungs)
All of the amino acid tyrosine is reabsorbed from the final urine
(so none is excreted). The concentration of tyrosine in the blood
plasma is 10mg/100ml, the filtration rate is 100 ml/min, and the
percentage of plasma entering the glomerulus that is filtered is
50%. Therefore the clearance of tyrosine is
a) 0 ml/min
b) 5 ml/min
"ECG" stands for
a) electrocardiogram
b) encephalocardiograph
c) endocopiogram
d) endocrinogram
e) ectocardiogram Correct Answers a (electrocardiogram)
A beta-blocker is an antagonist to NE in cardiac pacemaker cell
receptors. Therefore, administration of a beta-blocker will cause
a) an increase in the rate of action potentials in pacemaker cells
without affecting heart beat rate
b) an increase in the rate of action potentials in pacemaker cells
which will speed up heart beat rate
c) an increase in the rate of action potentials in pacemaker cells
which will slow down heart beat rate
d) a decrease in the rate of action potentials in pacemaker cells
without affecting heart beat rate
e) a decrease in the rate of action potentials in pacemaker cells
which will slow down heart beat rate Correct Answers e (a
decrease in the rate of action potentials in pacemaker cells which
will slow down heart beat rate)
A child is eating round candies and accidentally inhaled one
which got stuck down
his airway blocking his left bronchus. Which of the following
will describe the
,changes that occur? His left lung alveolar PCO2 will
_________, his left lung
alveolar PO2 will __________, and his systemic arterial PO2
will __________.
a) increase, increase, increase
b) increase, increase, decrease
c) decrease, decrease, decrease,
d) decrease, increase, decrease
e) increase, decrease, decrease Correct Answers e (increase,
decrease, decrease)
A healthy young adult stands up from a supine (lying down)
position. Which of the following sets of cardiovascular changes
is most likely to occur? A(n) _____ in heart rate and a(n) _____
in total peripheral resistance.
a) increase, increase
b) increase, decrease
c) decrease, decrease
d) decrease, increase Correct Answers a (increase, increase)
A normal heart beat rate at rest is approximately ______, while a
normal stroke
volume is about _________.
a) 70 beats/minute, 70 ml
b) 70 beats/minute, 70 liters
c) 70 beats/second, 70 quarts
d) 7 beats/minute, 7 liters
,e) 70 beats/hour, 70 gallons Correct Answers a (70
beats/minute, 70 ml)
A particular blood vessel experiences a blood flow of 10ml per
minute. If this volume flow rate does NOT change, which of the
following would lead to an increase in the speed or velocity of
the blood passing through the vessel?
a) an increase in the diameter of the blood vessel
b) a decrease in the radius of the blood vessel
c) an increase in the length of the blood vessel
d) a decrease in the length of the blood vessel
e) an increase in the viscosity of the blood Correct Answers b
(a decrease in the radius of the blood vessel)
A particular blood vessel has an endothelial layer, but no elastic
tissue, smooth muscle, fibrous tissue, or valves. This vessel is
a) an artery
b) an arteriole
c) a capillary
d) a venule
e) a vein Correct Answers c (a capillary)
A particular blood vessel has an endothelial layer, elastic tissue,
smooth muscle, fibrous tissue, and valves. This vessel is
a) an artery
b) an arteriole
c) a capillary
d) a venule
, e) a vein Correct Answers e (a vein)
A sensory neuron that sends information about a visual stimulus
to the brain is in the
a) central nervous system
b) autonomic nervous system
c) somatic motor division
d) afferent division
e) enteric nervous sytem Correct Answers d (afferent division)
Air moves into the lungs because contraction of the diaphragm
a) increases the volume of the pleural cavity, lowering the
pressure of the lungs
b) decreases the volume of the pleural cavity, lowering the
pressure of the lungs
c) increases the volume of the pleural cavity, increasing the
pressure in the lungs
d) decreases the volume of the pleural cavity, increasing the
pressure in the lungs Correct Answers a (increases the volume
of the pleural cavity, lowering the pressure of the lungs)
All of the amino acid tyrosine is reabsorbed from the final urine
(so none is excreted). The concentration of tyrosine in the blood
plasma is 10mg/100ml, the filtration rate is 100 ml/min, and the
percentage of plasma entering the glomerulus that is filtered is
50%. Therefore the clearance of tyrosine is
a) 0 ml/min
b) 5 ml/min
