Neurology test 1

What structures are part of the CNS?

Brain and Spinal Cord

What are the 3 primitive embryological differentiations of the CNS?

what are the lobes of the cerebral hemispheres?

Frontal, Temporal, Parietal, Occipital

Define anterior

toward the front of the body

Define contralateral

on the opposite side of the body

What are the structural features of a typical neuron?

1. Soma or cell body

2. axons

3. dendrites

4. presynaptic terminal

what forms a barrier between the extracellular environment and the intracellular cytoplasm of the neuron?

cell membrane

what are the 3 types of ion gated channels?

1. ligand

2.voltage

3 mechnical

How does myelin play a role in the electrical impulse propagation along the axon?

The myelin sheaths and nodes enhance rapid propagation of the electrical impulse along the nerve fiber

Where are AP generated?

axon hillock

what is grey matter

neural tissue that consists of the somas (cell bodies)

what is white matter

the axon, transmits info to the grey matter

axons

the output site, transmits electrical signals away from the cell body

dendrites

input site, receive incoming signal from other neurons

General Somatic Efferent

carry motor impulses to the skeletal muscle