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Study Guide

[KINE 1P90] - Final Exam Guide - Comprehensive Notes for the exam (22 pages long!)


Department
Physical Education and Kinesiology
Course Code
KINE 1P90
Professor
David Ditor
Study Guide
Final

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Brock U
KINE 1P90
FINAL EXAM
STUDY GUIDE

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Kine1P90
September 21
Muscle Activation and Motor Control
Anatomy of a nerve
dendrites- reach out and make
contact with nerves
Axon hillock is the most
important part
Myelin insulates the axon and allows for faster nerve conduction
Not all neurons are myelinated
In the CNS:
myelin = obligodendrocytes (cells wrapped around the axon)
In the peripheral nervous system:
myelin = schawnn cells
**myelin allows for faster action potential**
The electrical signal that travels along the nerve is called an action potential
Potential a cell has an electrical charge inside and outside of the cell and both charges are
different. Potential is the difference
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Membrane Potential
Plasma membranes have a membrane potential
Electric charge inside the cell is different than the electric charge outside the cell (electrically
polarized)
this is cause by a difference in the relative number of cations (+) and anions (-) in the
intracellular fluid (ICF) and extracellular fluid (ECF)
The ions responsible for producing the membrane potential are:
-sodium (Na+)
-potassium (K+)
-Anions (A-) large intracellular proteins
Resting Membrane Potential
How is the resting membrane potential created?
Passive diffusion of Na+ and K+ across the plasma membrane (80%)
Active transport of Na+ and K+ across the membrane via the Na+-K+ ATPase (Na+-K+ pump)
(20%)
**pump is an enzyme that lives on the membrane wall that works to correct the movement of
Na+ and K+**
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