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Of the following muscle types, which has only one nucleus, no sarcomeres, and rare gap junctions?

Multiunit smooth muscle

The sheath of Schwann is also called the __________.


Bipolar neurons are commonly ___________.

found in the retina of the eye

When a sensory neuron is excited by some form of energy, the resulting graded potential is called _______.

generator potential.

Collections of nerve cell bodies outside the central nervous system are called __________.


The term central nervous system refers to the __________.

brain and spinal cord.

The primary auditory cortex is located in the _______.

temporal lobe

Which of the following is false or incorrect?

A nerve impulse occurs if the excitatory and inhibitory effects are equal.

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

chiefly a potassium current

Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane?

A single type of channel will open, permitting simultaneous flow of sodium and potassium.

Select the correct statement regarding synapses.

The synaptic cleft prevents an impulse from being transmitted directly from one neuron to another.

The brain stem consists of the ________.

midbrain, medulla, and pons.

Which of the following is not a function of astrocytes?

Provide the defense for the CNS

Which of the choices below describes the ANS?

Motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac muscle and glands.

Which of the following is not a chemical class of neurotransmitters?

nucleic acid

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