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55 Cards in this Set
- Front
- Back
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What are the two points of attachment? |
The origin- which is moveable The insertion- which is immovable |
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What is the prime mover? |
Muscle with the major responsibility for a certain movement |
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What is the synergist? |
Muscle that aids a prime mover in a movement and helps prevent rotation |
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What does the pectoralis major do? |
Adducts and flexes humerus |
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What does the rectus abdominis do? |
Flexes vertebral column |
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What does the External Oblique do? |
Flexes and rotates vertebral column |
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What does the Biceps Brachii do? |
Flexes elbow and supinates forearm |
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What do the Brachialis do? |
Flexes elbow |
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What does the deltoid do? |
Abducts arm |
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What does the iliopsoas do? |
Flexes hip |
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What does the Sartorius do? |
Flexes thigh on hip |
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What does the tibialis anterior do? |
Dorsiflexes and inverts foot |
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What does the Extensor digitorum longus do? |
Extends toes and dorsiflexes foot |
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Neck/trunk/ shoulder muscles: What does the Trapezius do? |
Extends neck and adducts scapula |
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What does the latissimus dorsi do? |
Extends and adducts humerus |
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What does the erector spinae do? |
Extends back |
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What does the quadratus lumborum do? |
Flexes spine laterally and extends spine |
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Hip/thigh/leg muscles What does the Gluteus Medius do? |
Abducts thigh; steadies pelvis during walking |
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What does the Gastrocnemius do? |
Plantar flexes foot and flexes knee |
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What does the soleus do? |
Plantar flexes foot |
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Some examples of how muscles are named? |
Direction of muscle fibers Relative size of the muscle Location Number of origins Location of the muscles origin and insertion Shape And what the muscle does |
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What movement is flexion? |
Bending of the joint - where your arm is bent |
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What movement is extension? |
Straightening of the joint -where your arm is straight |
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What is Dorsiflexion? |
Bending the ankle upward |
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What is plantarflexion? |
Straightening out the ankle -pointing the toes |
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What is elevation? |
Moving a body part up -raising your shoulder |
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What is depression? |
Moving the body part down -shrugging shoulders |
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What is eversion? |
Rotating the ankle -turning ankle to the side |
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What is inversion? |
Bringing the ankle back into place |
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What is abduction? |
Moving a limb away from the body- reaching out |
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What is adduction? |
Moving a limb back towards the body |
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What is lateral rotation? |
Turning a limb outwards |
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What is medial rotation |
Turning a limb inwards |
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What is pronation |
Palm facing downward |
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What is supination |
Palm facing upward - like holding a bowl of soup |
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What is retraction |
Bending back the shoulders |
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What is protraction |
Moving shoulders back to normal resting state |
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What is lateral flexion |
Bending spine to the side |
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What is the area between nerve and muscle filled with? |
Interstitial fluid |
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What is a neurotransmitter? |
The chemical released by nerve upon arrival of nerve impulse |
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What is the antagonist? |
The muscle that opposes or reverse of a prime mover |
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What are the thick filaments? |
Myosin filaments |
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What are the thin filaments? |
Actin filaments |
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What is excitability? |
Ability to receive and respond to a stimulus |
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What is contractibility? |
Ability to shorten when an adequate stimulus is received |
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What is elasticity? |
Ability to recoil and resume resting length after stretching |
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What are the functions of the skeletal muscle? |
Produce movement Maintain posture Stabilize joints Generate heat |
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What are I bands? |
The light bands |
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What are A bands? |
The dark bands |
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What do the frontal muscles do? |
Raise the eyebrows |
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What is the neurotransmitter for skeletal muscle? |
Acetylcholine |
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Do nerves and muscles ever make contact? |
No, they never touch |
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What is the gap between nerve and muscle |
Synaptic celf |
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What is a neuromuscular junction? |
Association site of axon terminal of the motor neuron and muscle |
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What does skeletal muscle have to be stimulated from |
A motor neuron |
