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【多选题】
What is true about the description of humoral regulation（ ）
A.
Quick and accurate
B.
Slow action
C.
Low sensitivity
D.
Large scope of action
E.
Long duration of action
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参考解析：
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举一反三
【单选题】During the cardiac cycle, the left ventricular pressure increased sharply in（ ）
A.
Rapid ejection phase
B.
Atrial systole
C.
Isovolumetric systole
D.
Slow ejection phase
E.
Rapid filling period
【单选题】The physiological function of renal parabulbar cells is（ ）
A.
Secretion of angiotensin
B.
Secretion of prostaglandins
C.
Secretion of aldosterone
D.
Secretion of erythropoietin
E.
Secrete renin
【单选题】The outflow of K+ during an action potential is called（ ）
A.
Polarization
B.
Hyperpolarization
C.
Depolarization
D.
Reverse polarization
E.
Repolarization
【多选题】Which is correct in the following description about gastric acid（ ）
A.
Denature protein in food and decompose it easily
B.
Sterilization
C.
Promote the absorption of vitamin B12
D.
Activate pepsinogen
E.
Promote the secretion of digestive juices
【单选题】The basic center of the stretch reflex is located at（ ）
A.
The medulla oblongata
B.
The spinal cord
C.
The midbrain
D.
Cerebral cortex
E.
The hypothalamus
【多选题】About the description of physiological hemostasis mechanism, Which of the following is correct（ ）
A.
Prolonged bleeding time with thrombocytopenia
B.
Short duration of local vasoconstriction reaction
C.
Platelets are involved in the formation of thrombosis and blood clots
D.
Including local vasoconstriction, preventing thrombosis and blood coagulation
E.
Coagulation time is significantly shortened with thrombocytopenia
【单选题】The most important hormone affecting nervous system development is（ ）
A.
Adrenaline
B.
insulin
C.
Thyroid hormone
D.
aldosterone
E.
Growth hormone
【单选题】The heart index is equal to（ ）
A.
Heart rate × body surface area/cardiac output
B.
Cardiac output/body surface area
C.
Stroke output/body surface area
D.
Heart rate × stroke output/body weight
E.
Returned blood volume/body surface area
【单选题】Under normal circumstances, pulmonary ventilation resistance mainly comes from （ ）
A.
Viscous resistance
B.
Lung retraction force
C.
Airway resistance
D.
Inertial resistance
E.
Alveolar surface tension
【单选题】The Nucleic acid will get maximum UV absorbance at wavelength_____（ ）
A.
230nm
B.
260nm
C.
280nm
D.
270nm