Which of the following described ependymal cells?
a. holding the neurons together in proper spatial relationship
b. lining the internal cavities of the brain and spinal cord
c. inducing the formation of the blood-brain barrier
d. take up excess K+ to help maintain proper brain ECF ion concentration.
e. forming neural scar tissue
B
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Bell's palsy is ________
A) characterized by paralysis of facial muscles B) often caused by inflammation of the trigeminal nerve C) characterized by loss of vision D) characterized by partial paralysis of diaphragm muscles
Old erythrocytes are phagocytized in the
A. spleen. B. spleen and lung. C. liver. D. liver and spleen. E. lung.
Ischemic heart disease causes ________ on the ECG.
A. no QRS complex B. inverted P waves C. S-T depression D. no P wave
When the sciatic nerve was chilled with iced Ringer's solution, ________
A) the compound action potential was unchanged B) it became very excitable, generating large compound action potentials to small stimuli C) it became inexcitable or required a stimulus much greater than normal to produce a compound action potential