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Muscle Tension

Total Muscle Tension

What 2 factors affect Total Muscle Tension? 1. number of CONTRACTING Fibers; 2. TENSION per Fiber
What is the definition of Recruitment? VOLUNTARY increasing the number of ACTIVE Motor Units as necessary
Which Motor Units are "Recruited" first? smaller, SLOW-Oxidative units
What is the number of contracting Fibers determined by? 1. NUMBER of Fibers per Motor Unit; 2. number of ACTIVE Motor Units
What is the tension per Fiber determined by? 1. PROTEIN Content of Actin/Myosin; 2. DURATION of Activity; 3. FREQUENCY of Motor AP's; 4. Muscle Fiber LENGTH
What factor determine the control of Muscle Tension? SIZE and NUMBER of Motor Units
What are the 2 types of Muscle Tension Control? Course control, Fine, Delicate control
What determines Course Control and where is it located? FEW Motor Units with MANY Cells/unit - Legs, Back
What determines Fine Control and where is it located? MANY Motor Units with FEW Cells/unit - Fingers, Hand, Tongue
What is meant by Total Tension? Lifting Power
Created by: Kristel