PHSL 2101 - Final Exam MC cvs Latest Update
According to the Starling Equation, which one of the following would not be a
factor in the net filtration pressure controlling the movement of water across the
capillary wall? - ANSWER The number and size of the pores in the capillary wall
A reflex increase in heart rate may be caused by - ANSWER all the above
Which one of the following would NOT result in an increase in the movement of
fluid out of capillaries? - ANSWER A decrease in the osmotic pressure of the
interstitial fluid
The major mechanism controlling the diameter of arteries in the skin is -
ANSWER sympathetic nerve activity
Starling's Law of the Heart means that when ventricular pre-load is increased,
stroke volume will - ANSWER increase
During which phase of the cardiac cycle are all four heart valves open? -
ANSWER all four are normally never open simultaneously
Cardiac stroke volume may be defined as - ANSWER end-diastolic volume (EDV)
minus end systolic volume (ESV)
The volume reflex, in which heart rate and renal blood flow are increased
following an increase in blood volume, is mediated primarily by - ANSWER atrial
and vena cava baroreceptors
The repolarisation of pacemaker cells is due in part to - ANSWER an increase in
the permeability of potassium
Simulation of the heart by parasympathetic nerves - ANSWER causes
Bradycardia
According to the Starling Equation, which one of the following would not be a
factor in the net filtration pressure controlling the movement of water across the
capillary wall? - ANSWER The number and size of the pores in the capillary wall
A reflex increase in heart rate may be caused by - ANSWER all the above
Which one of the following would NOT result in an increase in the movement of
fluid out of capillaries? - ANSWER A decrease in the osmotic pressure of the
interstitial fluid
The major mechanism controlling the diameter of arteries in the skin is -
ANSWER sympathetic nerve activity
Starling's Law of the Heart means that when ventricular pre-load is increased,
stroke volume will - ANSWER increase
During which phase of the cardiac cycle are all four heart valves open? -
ANSWER all four are normally never open simultaneously
Cardiac stroke volume may be defined as - ANSWER end-diastolic volume (EDV)
minus end systolic volume (ESV)
The volume reflex, in which heart rate and renal blood flow are increased
following an increase in blood volume, is mediated primarily by - ANSWER atrial
and vena cava baroreceptors
The repolarisation of pacemaker cells is due in part to - ANSWER an increase in
the permeability of potassium
Simulation of the heart by parasympathetic nerves - ANSWER causes
Bradycardia
