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Physiology

Skeletal Muscle Motor Control - Test 4

QuestionAnswer
True or False, Agonists muscles provide a concentric contraction True
True or False, antagonist muscles provide a contraction in which the muscle lengthens True, AKA Eccentric Contraction
During repeated exercises what type of reflexes are initiated? Reverberatory Spinal Reflexes
What did the studies of Ruffini, Golgi, and Sherrington show regarding muscle control? Skeletal muscle is richly endowed with a large variety of sensory receptors
List the receptors involved in muscle control: 1. Muscle Spindles 2. Golgi Tendon Organ 3. Secondary Spindle Endings 4. Nonspecific Endings 5. Free Nerve Endings
List the types of efferent nerve fibers 1. Alpha Motor Neuron 2. Beta Fibers 3. Gamma Fibers
What is another name for Beta Fibers? Skeletofusimotor fibers
What is another name for Gamma Fibers? Fusimotor fibers
Primary spindle endings detect what? Muscle length and the rate of change in length
Golgi Tendon Organs detect what? Muscle Tension
Secondary Spindle Endings detect what? Muscle Length
Nonspindle Endings detect what? Deep Pressure
What do Free nerve Endings detect? Pain, Chemical Stimuli, and Temperature
What do Alpha motor neurons innervate? Extrafusal Muscle Fibers
What do Beta motor neurons innervate? Intrafusal Muscle Fibers
What do Gamma motor neurons innervate? Intrafusal Fibers
What is the function of Alpha Motor Neurons? Controls tension, strength, and rate of pull on skeleton
What is the function of Beta Motor Neurons? Controls sensitivity of muscle spindles
What is the function of Gamma Motor Neurons? Controls sensitivity of muscle spindles
True or False, Beta Fibers are independent of Alpha motor neurons? False, Gamma Motor Neurons are independent of Alph Motor Neurons
Which type of receptor is encapsulated? Muscle Spindles and Golgi Tendons
Which type of receptor is the most complex? Muscle Spindles
True or False, the rectus femoris contains a high number of muscle spindles? False, only muscle involved in fine delicate control contain a high number of muscle spindles
True or False, the muscle spindle capsule is attached to both extrafusal and intrafusal muscle fibers? True
True or False, Intrafusal fibers are embedded within the capsule? True
Created by: Tri 2
 

 



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