Which one of the following nerves is the branches of the brachial plexus? ()
A. axillary nerve
B. median nerve
C. radial nerve
D. ulnar nerve
E. musculocutaneous nerve
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Which types of trans-membrane transportation of substances do not consume energy? ()
A. secretion of H+ in renal tubule through H+ pump
B. trans-membrane transportation of O2
CO2 transportation across RBC membrane
D. H2O go through cell membrane
E. Ca2+ reabsorption in sarcoplasmic reticulum
Which are correct in the following descriptions about the properties of action potential? ()
A. all or none
B. several action potentials can be summation
C. several action potentials can not be summation
D. The conduction velocity of action potential in a myelinated nerve fiber is faster than in unmyelinated nerve fiber
E. The amplitude of the action potential decreases with the increase of the conduction distance
Passive transport includes ()
A. simple diffusion
B. facilitated diffusion
C. active transport
D. endocytosis
E. exocytosis
Which one of the following nerves connected with medulla oblongata? ()
A. abducent nerve
B. facial nerve
C. optic nerve
D. vagus nerve
E. trochlear nerve
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