A neuron that carries action potentials from one neuron to another is called a(n

Question

A neuron that carries action potentials from one neuron to another is called a(n)_______. A motor neuron B sensory neuron C. afferent neuron D. efferent neuron E interneuron Microglia A. are part of the blood-twain homer. B. are phagocytic cells in the CSS. C. produce cerebrospinal fluid. D. form myelin sheaths. E. are part of the choroid plexus. The plasma membrane of a neuron is more permeable to potassium ions because A. of its positive electrical charge. B. there are more non-gated channels for K+ than Na+. C. protein molecules cannot exit through the cell membrane. D. calcium ions block Na+ and Cl- channels. E. there are more non-gated channels for Na+ than K+. Which of the following situations occurs in electrically excitable cells? A. When Na+ ion channels open. K+ ion channels close. B. The sodium-potassium exchange pump moves sodium into the cell. C. Depolarization causes voltage-gated sodium ion channels to open. D. Ligand-gated sodium ion channe

Explanation / Answer

6.E is the right choice

7.B is the right answer as microglia are the phagocytic cell derived from the monocytes and enter the tissues of nervous system from blood,engulf and destroy the microorganisms and cellular debris by means of phagocytosis.

8.D is the correct choice

9.C is the correct answer as at first when stimulus is given only few sodium channels open so depolarisation begins

which stimulates the further opening of sodium channel.

10.A is right answer.

11.D is the right answer as there is reversal of polarity.

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