BSNC 2000 Midterm Quiz Questions with Correct Answers
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Course
BSNC 2000
Institution
BSNC 2000
BSNC 2000 Midterm Quiz Questions with Correct Answers
As blood passes through pulmonary capillaries:
a) it delivers oxygen to be used by cells of the lungs.
b) hemoglobin saturation drops to 75%.
c) hemoglobin affinity for oxygen decreases.
d) carbon dioxide enters red blood cells.
e) h...
BSNC 2000 Midterm Quiz Questions
with Correct Answers
As blood passes through pulmonary capillaries:
a) it delivers oxygen to be used by cells of the lungs.
b) hemoglobin saturation drops to 75%.
c) hemoglobin affinity for oxygen decreases.
d) carbon dioxide enters red blood cells.
e) high PO2drives the loading of hemoglobin with oxygen. - Answer-e) high PO2drives
the loading of hemoglobin with oxygen.
How is the majority of oxygen transported in the blood?
a) dissolved in the plasma
b) as bicarbonate ion
c) bound to globin
d) bound to heme
e) in white blood cells - Answer-d) bound to heme
Central chemoreceptors:
a) are located in the aortic arch and carotid sinuses.
b) are located in the hypothalamus.
c) carry information about blood chemistry to the brain via the vagus and
glossopharyngeal nerves.
d) detect changes in blood oxygen levels.
e) detect increases in hydrogen ion levels in the CSF. - Answer-e) detect increases in
hydrogen ion levels in the CSF.
Cardiac output in a healthy adult ranges from 3.5 to 8.0 L/minute under resting
conditions.
True/ False - Answer-True
The volume of blood in the heart at the end of filling is called the:
stroke volume
afterload
end diastolic volume
end systolic volume - Answer-afterload
An increase in total blood volume will increase preload.
, True/ False - Answer-True
An increase in afterload will increase stroke volume.
True/ False - Answer-False
An increase in heart rate shortens the duration of systole more than diastole.
True/ False - Answer-False
Which of the following will increase myocardial contractility?
A drug that stimulates the entry of calcium into cardiac muscle fibres:
is a negative inotropic agent
is a positive inotropic agent
will decrease contractility
will decrease stroke volume - Answer-is a positive inotropic agent
The _____________ nervous system contains voluntary motor neurons that innervate
skeletal muscles.
a) somatic
b) central
c) autonomic
d) parasympathetic
e) sympathetic - Answer-a) somatic
The two divisions of the autonomic nervous system are the sympathetic and
parasympathetic.
True/ False - Answer-True
Sensory neurons:
a) are classified as upper or lower.
b) conduct nerve impulses to muscles and glands.
c) contain dendrites with specialized sensory receptors.
d) are also called efferent neurons.
e) are not myelinated. - Answer-c) contain dendrites with specialized sensory receptors.
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