WCU PHYS 261 Final Exam Review
The volume of blood pumped out of the heart from one ventricle during one contraction -
✔️✔️Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile cells is
due to which ion(s)? - ✔️✔️Na+ only
The volume of blood in the ventricle available to be pumped out of the heart during one
contraction - ✔️✔️End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts - ✔️✔️End- systolic volume
(ESV)
The volume of blood ejected from each ventricle during a contraction - ✔️✔️Stroke
volume (SV)
What happens when calcium binds to troponin? - ✔️✔️Tropomyosin is pulled away
from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. - ✔️✔️pressure
Which would NOT cause an increase in blood pressure? - ✔️✔️a decrease in cardiac
output
Match the name of the wave with the correlated event:
ventricular depolarization - ✔️✔️QRS complex
The function of transverse tubules is to - ✔️✔️rapidly conduct action potentials to the
interior of the muscle fiber.
Which is greater:
A) blood pressure when the peripheral vessels constrict
B) blood pressure when the peripheral vessels dilate - ✔️✔️A) blood pressure when
the peripheral vessels constrict
The P wave of an ECG corresponds to - ✔️✔️depolarization of the atria
The reflex that compliments a withdrawal reflex by making compensatory adjustments
on the opposite side of the body receiving the stimulus is the - ✔️✔️crossed extensor
reflex
, Your instructor announces a pop quiz. Which would you expect? - ✔️✔️Increased
sympathetic signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin
light chain protein. - ✔️✔️myosin light chain kinase
In which situation would end- systolic volume (ESV) be the greatest? - ✔️✔️when
parasympathetic stimulation of the heart is increased
Striated muscles are so- called because of a repeating pattern of light and dark bands.
One repeating unit of the banding pattern is called a - ✔️✔️Sarcomere
The contraction cycle is initiated by the rise in _______ released from the sarcoplasmic
reticulum (SR). - ✔️✔️Ca2+
The cardiac output is equal to the - ✔️✔️product of heart rate and stroke volume
The importance of the plateau phase of the action potential of myocardial cells is in -
✔️✔️preventing tetanus
If cardiac output increases and resistance in arterioles does NOT change, what
happens to arterial blood pressure? - ✔️✔️increases
The action potential traveling along the t-tubule changes the conformation of the -
✔️✔️dihydropyridine (DHP) receptor (L- type calcium channel)
Restoring lost fluid from the capillaries back to the circulatory system is one of the major
functions of the ________ system. - ✔️✔️lymphatic
An increase in plasma potassium levels is properly called - ✔️✔️hyperkalemia
Chief cells secrete - ✔️✔️pepsinogen
The hormone vasopressin - ✔️✔️stimulates kidneys to retain water
The enzyme renin is responsible for the production of - ✔️✔️Angiotensin I
A glomerulus is - ✔️✔️a "ball" of capillaries within Bowman's capsule
Dehydration leads to ________ blood volume, ________ blood pressure, and ________
osmolarity. - ✔️✔️decreased, decreased, increased
G cells of the stomach secrete - ✔️✔️gastrin
The volume of blood pumped out of the heart from one ventricle during one contraction -
✔️✔️Stroke Volume (SV)
The rapid depolarization phase of the action potentials of myocardial contractile cells is
due to which ion(s)? - ✔️✔️Na+ only
The volume of blood in the ventricle available to be pumped out of the heart during one
contraction - ✔️✔️End- diastolic volume (EDV)
The volume of blood left in the ventricle after it contracts - ✔️✔️End- systolic volume
(ESV)
The volume of blood ejected from each ventricle during a contraction - ✔️✔️Stroke
volume (SV)
What happens when calcium binds to troponin? - ✔️✔️Tropomyosin is pulled away
from the myosin-binding site on actin.
The driving force for blood flow is a(n) ________ gradient. - ✔️✔️pressure
Which would NOT cause an increase in blood pressure? - ✔️✔️a decrease in cardiac
output
Match the name of the wave with the correlated event:
ventricular depolarization - ✔️✔️QRS complex
The function of transverse tubules is to - ✔️✔️rapidly conduct action potentials to the
interior of the muscle fiber.
Which is greater:
A) blood pressure when the peripheral vessels constrict
B) blood pressure when the peripheral vessels dilate - ✔️✔️A) blood pressure when
the peripheral vessels constrict
The P wave of an ECG corresponds to - ✔️✔️depolarization of the atria
The reflex that compliments a withdrawal reflex by making compensatory adjustments
on the opposite side of the body receiving the stimulus is the - ✔️✔️crossed extensor
reflex
, Your instructor announces a pop quiz. Which would you expect? - ✔️✔️Increased
sympathetic signaling and increased cardiac output
This protein is activated by the Ca2+-calmodulin complex to phosphorylate the myosin
light chain protein. - ✔️✔️myosin light chain kinase
In which situation would end- systolic volume (ESV) be the greatest? - ✔️✔️when
parasympathetic stimulation of the heart is increased
Striated muscles are so- called because of a repeating pattern of light and dark bands.
One repeating unit of the banding pattern is called a - ✔️✔️Sarcomere
The contraction cycle is initiated by the rise in _______ released from the sarcoplasmic
reticulum (SR). - ✔️✔️Ca2+
The cardiac output is equal to the - ✔️✔️product of heart rate and stroke volume
The importance of the plateau phase of the action potential of myocardial cells is in -
✔️✔️preventing tetanus
If cardiac output increases and resistance in arterioles does NOT change, what
happens to arterial blood pressure? - ✔️✔️increases
The action potential traveling along the t-tubule changes the conformation of the -
✔️✔️dihydropyridine (DHP) receptor (L- type calcium channel)
Restoring lost fluid from the capillaries back to the circulatory system is one of the major
functions of the ________ system. - ✔️✔️lymphatic
An increase in plasma potassium levels is properly called - ✔️✔️hyperkalemia
Chief cells secrete - ✔️✔️pepsinogen
The hormone vasopressin - ✔️✔️stimulates kidneys to retain water
The enzyme renin is responsible for the production of - ✔️✔️Angiotensin I
A glomerulus is - ✔️✔️a "ball" of capillaries within Bowman's capsule
Dehydration leads to ________ blood volume, ________ blood pressure, and ________
osmolarity. - ✔️✔️decreased, decreased, increased
G cells of the stomach secrete - ✔️✔️gastrin
