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Lecture

KINS 2295 Lecture Notes - Motor Neuron, Epimysium, Gluteus Maximus Muscle

by

Department
Kinesiology
Course Code
KINS 2295
Professor
N.Walsh

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SKELETAL MUSCLE
3 types of muscles
1.) Skeletal- attaches to and moves skeleton. Under voluntary control.
2.) Smooth- found in walls of hollow organs and blood vessels. Under involuntary control.
3.) Cardiac muscle- found in the walls of the heart. Under involuntary control.
The criteria used to name muscles
1. Shape deltoid(triangular)
2. Action flexor,extensor
3. Location tibialis anterior
4. Divisions-triceps brachii
5. Size relationships- gluteus maximus
6. Direction of fibers- transverses(across)
The criteria used to name muscles
1.) Shape
2.) Action
3.) Location
4.) Division
5.) Size relationship
6.) Direction of fiber
5 skeletal muscle shapes
1. unipennate
2.Bipennate
3.Multipennate
4.Longitudinal (strap)
5. Radiate
the three muscle actions
1. Prime mover: a muscles who's contraction is primarily responsible for a particular movement.
2.Antagonist: muscles that oppose one another during contraction. e.g bicep, tricep
3.Fixators/stabilizers: Muscles that immobilize a joint or bone so that the prime muscle can work
efficiently.
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