Nervous tissue

1-The glial cell that forms perivascular feet is:

Degeneration of myelin sheat results in:

Loss of signal or impulse.

A disease called multiple sclerosis

Inability of the affected person to execute movements or thinking.

All of the listed are correct.

Non of the listed

Regarding the histology of CNS, Which is Wrong:

Formed of gray and white matters.

Gray matter is the outer layer in the brain.

White matter is the inner layer in the spinal cord.

Neurons cell bodies are present within the CNS and ganglia.

Concerning the process of myelination, one of the followings is true:

One oligodendrocyte makes myeline sheath of one internode of one axon only.

One Schwan cell makes myeline sheath of one internode of one axon only.

One Schwan cell ensheathes one unmelinated axon only

Unmyelinated axons may have nodes of Ranvier.

Regarding the ganglia, one of the followings is not correct:

Most of the sensory ganglia are formed of bipolar nerve cells.

The sensory ganglia contain no synapses

The sensory ganglia contain large number of stellate cells around their neurons.

The autonomic ganglia are formed of multipolar neurons..

Regarding the neurons, one of the followings is not correct:

The axons maintain their diameter along their length.

The dendrites maintain their diameter along their length.

Any part of neuron (cell body, dendrite or axon) may receive synapses.

One axon may give-rise to some axon terminals.

Structurally the sites responsible for action potential initiation and salutatory conduction in the neurons are:

Dendrites and Axon hillock.

Dendrites and Nodes of Ranvier.

Axon hillock and nodes of Ranvier.

Myelin sheat and nodes of Ranvier.

Dendrites and myelin sheat.

Sensory ganglion neurons are:

Multipolar neurons.

Bipolar neurons.

Unipolar neurons.

Pseudopolar neurons.

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