The main factors affecting diastolic blood pressure in normal people are []
A. Elasticity of large arteries
B. Cardiac output
Changes in the diameter of resistance vessels
D. Blood viscosity
E. Vessel length
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Which of the following substances is not directly related to the regulation of organ blood flow []
A. Lactic acid
B. Carbon dioxide
C. Renin
D. Prostaglandin
E. Adenosine
The increase in coronary blood flow is mainly due to []
A. Increased aortic systolic pressure and shortened diastolic period
B. Decreased aortic systolic pressure and shortened diastolic period
C. Increased aortic diastolic pressure and extended diastolic period
Decreased aortic diastolic pressure and shortened diastolic period
E. Increased aortic systolic blood pressure, unchanged diastolic period
What can reduce the generation of interstitial fluid is []
A. Loss of large amounts of plasma proteins
B. Increased capillary blood pressure
C. Right heart failure, blocked venous return
D. Blocked lymphatic return
E. Increased plasma colloid osmotic pressure
The reason for the decrease in blood pressure when changing from a prone position to an upright position is []
A. Relaxation of arterioles
B. Large amount of blood retained in veins
C. Decreased tonicity of sympathetic vasoconstriction center
D. Increased tonicity of cardiac vagal center
E. Decreased myocardial contractility
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