Answer These Fundamental of Nervous System Flashcards

Direct-acting neurotransmitters ____________. a. require cyclic AMP b. mediate very slow responses c. open ion channels to provoke rapid responses d. act through second messengers

Which of the following is correct relative to Ohm's Law? a. I = R / V b. Current is directly proportional to the voltage c. R = V + 1 d. The more intense the stimulus, the more voltage changes

Ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid are called _____. a. ependymal cells b. Schwann cells c. oligodendrocytes d. astrocytes

The sheath of Schwann is also called the ____. a. myelin sheath b. axolemma c. neurilemma d. white matter

Bipolar neurons are commonly ________. a. motor neurons b. called neuroglial cells c. found in ganglia d. found in the retina of the eye

An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is _____. a. cholinesterase b. norepinephrine c. acetylcholine d. gamma aminobutyric acid (GABA)

A neural circuit in which a single impulse is transmitted over and over is a _____. a. diverging circuit b. converging circuit c. reverberating circuit d. repetitive circuit