Bio 669 Exam 2 Questions and Answers 100% Solved | Graded A+
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Course
BIO 669
Institution
BIO 669
Bio 669 Exam 2 Questions and Answers
100% Solved | Graded A+
Neuron is composed of - cell body, dendrites, axon
densely packed cell bodies in the CNS are called _____ - nuclei
densely packed cell bodies in the PNS are called _____ - Ganglia
What are dendrites? - Receptive portions of the neuro...
What is myelin? - ✔✔A segmented layer of lipid material, acts as insulation.
what is myelin called in the PNS? - ✔✔Schwann cells
What are the nodes of Ranvier? - ✔✔gaps/regular interruptions in the
myelin sheath
What is saltatory conduction? - ✔✔The flow of ions between segments of
myelin rather than alone the entire length of the axon. Like playing leap
frog.
What is divergence? - ✔✔ability of branching axons to influence many
neurons
What is convergence? - ✔✔Branches of numerous neurons converging on
one or a few neurons
Central Nervous System (CNS) is made up of - ✔✔brain and spinal cord
Peripheral Nervous System (PNS) is made up of - ✔✔cranial nerves and
spinal nerves
afferent pathways are_____ - ✔✔ascending
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