2026 BMS 300 exam 3 Actual Exam |Questions and
Correct Detailed Answers |Latest Version!!! Already
Graded A+
The Ca2+ influx to balance the K+ efflux is responsible for ______
Depolarization of action potential, plateau phase
The threshold for rapid depolarization in autorhythmic cardiac cells is
reached by the activity of the___________
HCN channels
The rapid depolarization of the pacemaker cells is due to _______
Ca²⁺ channels
Abnormal T waves in the EKG can by MOST LIKELY indicative of
defects in _______
atrial diastole
Decreased blood being brought to the myocardium is a direct
consequence of a ______
Heart attack
During isovolumetric contraction there is no change in volume
because the ventricular pressure is_________ than aortic pressure but
_________ than atrial pressure
Lower; higher
pg. 1
,Ventricular filling is complete immediately after the ______
P wave
The slope constructed using the End Systolic volume in the PV loop
indicates ____
Contractility
In the pressure-volume loop, a decrease in the end-diastolic volume is
most directly indicative of a decrease in _______
Preload
The cardiac output is inversely associated with _____
End systolic volume (ESV)
The cardiac muscle can exhibit the Frank-Starling mechanism, where
the muscle length determines the force generated. The reason for this
is that physiologically the cardiac muscle is present in the
__________ of the force-length relationship
Ascending limb
The autonomic nervous system can _________ heart rate by causing
_________ of the membrane potential of pacemaker cells
Decrease; greater hyperpolarization
Which among the following slows blood flow to the greatest extent?
Arterioles
pg. 2
,When you spin down/centrifuge a sample of whole blood, you will
most likely find proteins and solutes in the _______
Plasma
The liver takes up __________, produced by the breakdown of heme,
and excretes it into bile
Bilirubin
_______ are white blood cells (WBC) with a multilobed nucleus
which stain with an acidic dye.They are involved in dealing with
parasites and allergic reactions
Eosinophils
The _________ muscle is more sensitive to changes in muscle length
than the _________ muscle because it functions in the __________ of
the force-length relationship.
Cardiac; skeletal; ascending limb
A stimuli from the CNS is not required for _____
Force-length relationship
Glycogen would be used as a fuel by _________ fibers, whereas fats
would be used as a fuel by_________ fibers
Fast; Slow
Muscles with predominantly __________ fibers are most resistant to
lactic acid buildup
pg. 3
, Slow
_________ receives oxygenated blood
Left atrium
As the heart __________, the __________ valves open, causing blood
to flow into the left and right ventricles whereas the __________
valves close
Relaxes left and right AV; aortic and pulmonary
_______ triggers the synthesis of the eosinophils, monocytes,
platelets, and red blood cells
Multi-CSF
If you want to study how lymphocytes are formed and mature, then
you would most likely harvest cells from the _______
Thymus
Which type of the following connective tissues are tendons composed
of?
Dense regular connective tissue
A mutation in TnC decreases its capacity to bind Ca2+. Consequently,
which state of the thin filament does this mutant TnC promote?
Blocked
Which ion has a higher intracellular concentration than extracellular?
pg. 4
Correct Detailed Answers |Latest Version!!! Already
Graded A+
The Ca2+ influx to balance the K+ efflux is responsible for ______
Depolarization of action potential, plateau phase
The threshold for rapid depolarization in autorhythmic cardiac cells is
reached by the activity of the___________
HCN channels
The rapid depolarization of the pacemaker cells is due to _______
Ca²⁺ channels
Abnormal T waves in the EKG can by MOST LIKELY indicative of
defects in _______
atrial diastole
Decreased blood being brought to the myocardium is a direct
consequence of a ______
Heart attack
During isovolumetric contraction there is no change in volume
because the ventricular pressure is_________ than aortic pressure but
_________ than atrial pressure
Lower; higher
pg. 1
,Ventricular filling is complete immediately after the ______
P wave
The slope constructed using the End Systolic volume in the PV loop
indicates ____
Contractility
In the pressure-volume loop, a decrease in the end-diastolic volume is
most directly indicative of a decrease in _______
Preload
The cardiac output is inversely associated with _____
End systolic volume (ESV)
The cardiac muscle can exhibit the Frank-Starling mechanism, where
the muscle length determines the force generated. The reason for this
is that physiologically the cardiac muscle is present in the
__________ of the force-length relationship
Ascending limb
The autonomic nervous system can _________ heart rate by causing
_________ of the membrane potential of pacemaker cells
Decrease; greater hyperpolarization
Which among the following slows blood flow to the greatest extent?
Arterioles
pg. 2
,When you spin down/centrifuge a sample of whole blood, you will
most likely find proteins and solutes in the _______
Plasma
The liver takes up __________, produced by the breakdown of heme,
and excretes it into bile
Bilirubin
_______ are white blood cells (WBC) with a multilobed nucleus
which stain with an acidic dye.They are involved in dealing with
parasites and allergic reactions
Eosinophils
The _________ muscle is more sensitive to changes in muscle length
than the _________ muscle because it functions in the __________ of
the force-length relationship.
Cardiac; skeletal; ascending limb
A stimuli from the CNS is not required for _____
Force-length relationship
Glycogen would be used as a fuel by _________ fibers, whereas fats
would be used as a fuel by_________ fibers
Fast; Slow
Muscles with predominantly __________ fibers are most resistant to
lactic acid buildup
pg. 3
, Slow
_________ receives oxygenated blood
Left atrium
As the heart __________, the __________ valves open, causing blood
to flow into the left and right ventricles whereas the __________
valves close
Relaxes left and right AV; aortic and pulmonary
_______ triggers the synthesis of the eosinophils, monocytes,
platelets, and red blood cells
Multi-CSF
If you want to study how lymphocytes are formed and mature, then
you would most likely harvest cells from the _______
Thymus
Which type of the following connective tissues are tendons composed
of?
Dense regular connective tissue
A mutation in TnC decreases its capacity to bind Ca2+. Consequently,
which state of the thin filament does this mutant TnC promote?
Blocked
Which ion has a higher intracellular concentration than extracellular?
pg. 4
