Stephanie's Review

Neuroglia (or glial cells) perform a number of functions. Which of the following is NOT a function of

these cells?

• Segregate and insulate neurons

• Provide supportive for neurons

• Promote health and growth of neuron

• Generate action potentials that communicate with other neurons

***Which of following is correct?

• Cholinergic fibers respond to NE (norepinephrine

• . Cholinergic fibers release ACH (acetylcholine)

• Cholinergic fibers release NE (norepinephrine)

• Cholinergic fibers respond to ACH (acetylcholine)

*Regeneration of damaged axons in the PNS involves the coordinated activity of the following:

• Microglia, oligodendrocytes, axon filaments

• Macrophages, Schwann cells, astrocytes

• Macrophages, satellite cells, neutral tube

• Macrophages, Schwann cells, axon filament

* The cranial nerve that stands out by not supplying structures in the head and neck but instead

extends its innervation to the thoracic and abdominal viscera is the ____.

• Olfactory nerve

• Vagus nerve

• Median nerve

• Sciatic nerve

***The “jumping” of action potentials along a myelinated axon is called:)

• ) electrical conduction

• b) Myelinated conduction

• Multiple Sclerosis

• d) Saltatory conduction

*The type of membrane ion channel that opens is response to release of a neurotransmitter is called is

called a

• Voltage gated channel

• ) Mechanically gated channel

• Chemically gated channel

• Passive (leakage) channe

**Synapses are:

• Locations where neurons communicate with one another

• Found on the dendrites, cell body and axons of neurons

• Locations where neurotransmitter are a secretion

• All of the above.

*Which of the following neurotransmitters serves to stimulate skeletal muscle contraction?

• a) Endorphins

• Norepinephrin

• ) Epinephrine

• ) Acetylcholine

Which of the following is TRUE of neurotransmitters

• They are found ONLY in the CNS

• The same neurotransmitter may be stimulatory or inhibitory depending on its targe

• . They all share a common size and shape

• They are released from the dendrites

*The term lateralization refers to the situation where

• . each side of our brain (the hemispheres) is found laterally to the brain stem

• . each side of our brains takes a leading role in certain functions

• nerve signals run laterally between the left and right hemispheres of the brain nerve

• each cerebral hemisphere controls sensory and motor functions on the opposite side of the body