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Bio 669 Exam 2 Questions and Answers 100% Solved | Graded A+ $9.49   Add to cart

Exam (elaborations)

Bio 669 Exam 2 Questions and Answers 100% Solved | Graded A+

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  • BIO 669
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  • 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...

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  • October 30, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIO 669
  • BIO 669
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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 neuron; receives

information

What do axons do? - ✔✔Carry impulses away from the cell body

is membrane potential about the inside of the cell or the outside? -

✔✔inside of the cell

what is an electrochemical gradient? - ✔✔describes the forces affect on ion

movement if allowed to become permeable a membrane

when does action potential start? - ✔✔when a membrane is depolarized

enough that it triggers voltage-gated ion channels

What is a graded potential? - ✔✔changes in membrane potential that

decreases over distance

, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
what Is a refectory period? - ✔✔a period immediately following stimulation

that is unresponsive for some time.

Reduced sensitivity

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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