What is NOT accurate about axonal projections? carries nerve impulses that can be graded in nature carry nerve impulses along the axoplasm carries nerve impulses from the soma and is maintained by the cytoskeleton leak and voltage-gated channels are on the axolemma
What is NOT accurate about axonal projections? carries nerve impulses that can be graded in nature carry nerve impulses along the axoplasm carries nerve impulses from the soma and is maintained by the cytoskeleton leak and voltage-gated channels are on the axolemma
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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There are a few important points that should be kept in mind.
Axonal projections: It is basically concerned with neurons. It helps in the transmission of nerve impulses
Neurons:
- They are the basic structural and functional unit of the nervous system.
- It possesses electrical excitability, the ability to respond to stimulus and convert it into an action potential.
Neurons consist of three parts: Cell body, dendrites, and axon.
Cell body:
- It contains a nucleus surrounded by cytoplasm.
Dendrites:
- They are the receiving portion of neurons.
- They are usually short, tapering, and branched.
Axon:
- It is a long and thin projection that joins the cell body.
- It conducts the nerve impulses away from the cell body towards other neurons.
- Covered by the protective myelin sheath.
- It contains mitochondria, microtubules, and neurofibrils.
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