Internal respiration is（）
A. gas exchange between the cells and the blood in the capillary
B. gas exchange between alveoli and blood in the capillary surrounding the alveoli
C. gas exchange between mitochondria and intracellular fluid
D. gas change between the cells in the tissue
E. gas exchange between alveoli and skeletal muscle cells
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The major factor that cause the alveoli to collapse is（）
A. alveolar surface tension
B. contraction of smooth muscle in the bronchia
C. pleural pressure
D. atmosphere pressure
E. pulmonary pressure
The elasticity of the Windkessel vessel mainly influence（）
A. pulse pressure
B. Systolic pressure （Ps）
C. Diastole pressure （Pd）
D. peripheral venous pressure
Which of the following is most likely to cause the heart to go into spastic contraction（）
A. Excess extracellular fluid calcium ions
B. Increased sympathetic activity
C. Increased body temperature
Decreased extracellular fluid potassium ions
A 70-year-old man enters the hospital emergency department and has been experiencing severe diarrhea（腹泻）. He has pallor, tachycardia, and an arterial pressure of 80/50, and has trouble walking. Which
A. Infusion of a balanced electrolyte solution
Blood infusion
C. Administration of an antihistamine（抗组胺药）
D. Infusion of a sympathomimetic drug （拟交感神经药）
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