WorksheetsCVS 04/10/22 (special circulations)
Total questions: 8
Worksheet time: 4mins
What is the usual systolic pressure in the pulmonary artery (in mmHg)?
0-8
15-30
60-90
100-140
Which factors increase the rate of diffusion of gases e.g. oxygen or carbon dioxide between the alveolar gas and capillary blood?
Small capillary surface area + long diffusion distance
Large capillary surface area + short diffusion distance
Small capillary surface area + short diffusion distance
Large capillary surface area + long diffusion distance
Which factors is most important in minimising the formation of tissue fluid (extracellular fluid in the tissues) in the lungs?
Low plasma oncotic pressure
Low interstitial oncotic pressure
Low capillary hydrostatic pressure
Low interstitial hydrostatic pressure
Which of the following is a mechanism of adaptation to reduced pressure in the CEREBRAL arterioles?
Vasoconstriction via the action of the sympathetic nervous system
Vasodilation via the action of the parasympathetic nervous system
Vasodilation via myogenic autoregulation
Vasoconstriction via myogenic autoregulation
How does increase arterial pCO2 affect cerebral blood vessels...
Vasodilation
Vasoconstriction
No change
Stimulation of which of these receptors results in vasodilation in the skeletal muscles?
Alpha 1
Alpha 2
Beta 1
Beta 2
Which of the agents below are NOT vasodilators in skeletal muscle?
H+ ions
K+ ions
Adenosine
Inorganic phosphae
None of the above
HPV is seen in which special circulation?
Cerebral blood vessels
Pulmonary blood vessels
Skeletal muscle blood vessels
Coronary blood vessels
