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What type of current flow through the axolemma during the steep phase of repolarization?

Assume that an EPSP is being generated on the dendritic membrane. Which will occur?

The velocity of nerve impulse conduction is greates in

Chemical synapses are characterized by all of the following expet

Biogenic anine neurotransmitter's include all but

The neuropeptides that act as natural opiates are

inhibition of acetylcholinesteras by poisoning blocks neurotransmission at the neuromuscular juction because

The anatomical region of a multipolar neuron that has the lowest threshold for generating an AP is the







The secretions of the adrenal medulla act to supplement the effects of ________

sympathetic stimulatio

In contrast to the somatic nervous system, the autonomic nervous system ________

has two efferent neuron

Preparing the body for the ʺfight-or-flightʺ response is the role of the ________

A) sympathetic nervous syste

The parasympathetic nervous system is characterized by peripheral ganglia near the ________

organs and by short postganglionic fiber

5)  A drug that might be used specifically to reduce heart rate in cardiac patients could be ________

a beta-blocker

The parasympathetic ganglion that serves the eye is the ________

ciliary ganglion

Cardiovascular effects of the sympathetic division include all except ________

dilation of the blood vessels serving the skin and digestive viscera

Over 90% of all parasympathetic fibers are derived from cranial nerve number ________.


The ʺresting and digestingʺ division of the autonomic nervous system is the ________

parasympathetic division

Control of temperature, endocrine activity, and thirst are functions associated with the ________.


Which of these effectors is not directly controlled by the autonomic nervous system

skeletal muscl

Which of the following is not a result of parasympathetic stimulation

dilation of the pupil

The site of origin of the preganglionic fibers of the parasympathetic nervous system is the ________.

brain stem and the sacral region of the cor

Sympathetic nerves may leave the spinal cord at which vertebrae

first thoraci

Sympathetic responses generally are widespread because ________

 single preganglionic axons make multiple synapses with ganglionic neuron

Autonomic ganglia contain ________

the cell bodies of motor neurons

Longitudinal fissure

Separates the two hemispheres

Transverse cerebral fissure

Separates the cerebrum and the cerebellum 

Central sulcus

Separates the precentral gyrus of the frontal lobe and the postcentral gyrus of the parietal lobe

The parasympathetic fibers of the ________ nerves innervate smooth muscles of the lens of the eye, the
muscles that cause the eye to bulge to accommodate close vision.


Fibers that enter and leave the sympathetic chain without synapsing form structures called ________

splanchnic nerve

Which is not a plexus of the vagus nerve


Gateway to the cerebral cortex