Ch.6 Muscle
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| The ability of skeletal muscle to shorten with force. | What is Contractility.
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| The capacity of skeletal muscle to respond to a stimulus. | What is Excitability.
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| The ability to be stretched. | What is extensibility.
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| Ability to recoil to their original resting length after they have been stretched. | What is elasticity.
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| Each skeletal muscle is surrounded by a connective tissue sheath called. | What is Epimysium.
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| Another connective tissue located outside the epimysium. It surrounds and separates muscles. | What is fascia.
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| Muscle composed of numerous visible bundles | What is muscle fascicle.
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| Muscle surrounded by loose connective tissue | What is Perimysium.
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| The fascicle are composed of single muscle cells | What is Fibers.
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| Muscle Cells | What is Muscle Fibers.
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| Buttocks | What is Gluteus Maximus.
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| Chest Muscle | What is Pectoral Muscle.
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| Anterior thigh muscle | What is Quadriceps Femoris.
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| Posterior thigh muscle | What is Hamstrings.
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| Top arm muscle | What is Bicep
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| Bottom arm muscle | What is Tricep
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| ATP | What is Adenosine Triphosphate
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| ADP | What is Adenosine Diphosphate
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| Creatine Phosphate | What is High-energy molecule
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| Anaerobic respiration | Without oxygen
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| Aerobic respiration | With oxygen (more efficient)
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| Isometric | (Equal Distance) - Amount of tension increases during the contraction process
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| Isotonic | (Equal Tension) - But the length of the muscle changes
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| Muscle tone | Keeps head up and back straight
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| Fast twitch fibers | Contract quickly and fatigue quickly
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| Slow twitch fibers | Contract more slowly and are more resistant to fatigue
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| Origin | Most stationary end of the muscle
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| Insertion | Muscle undergoing the greatest movement
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| Belly | Portion of muscle between the origin and insertion
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| Synergists | Muscles that work together to accomplish specific movements
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| Antagonists | Muscles that work in opposition
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| Occipitofrontalis | Raises the eyebrows
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| Prime Mover | Muscle that plays a major role among a group of synergists
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| Orbicularis oculi | Closes the eyelids and causes "crows feet"
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| Orbicularis oris | Puckers the lips
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| Buccinator | Flattens the cheeks
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| Orbicularis oris/ Buccinator | Kissing muscles
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| Zygomaticus | Smiling muscle
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| Levator labii superioris | sneering
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| Depressor anguli oris | frowning
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| Mastication | Chewing
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| Intrinsic tongue muscles | change the shape of the tongue
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| Extrinsic tongue muscles | move the tongue
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| Trapezius | Rotates scapula
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| Serratus anterior | pulls scapula anteriorly
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| Pectoralis major | Adducts and flexes the arm
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| Latissimus dorsi | Medially rotates, adducts, and powerfully extends the arm
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| Deltoid | Attaches the humerous to the scapula and clavicle
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| Triceps brachii | extends the forearm
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| Biceps brachii | Flexes the forearm, Occupies the anterior compartment of the arm
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| Brachialis | Flexes forearm
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| Brachioradialis | Flexes and supinates the forearm
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| Flexor carpi | Flexes the wrist
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| Extensor carpi | Extends the wrist
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| Flexor digitorum | flexes the fingers
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| Extensor digitorum | Extends the fingers
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| Sartorius | Flexes the thigh
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| Sliding filament mechanism | the sliding of actin myofilaments past myosin myofilaments during contraction
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| Muscle twitch | Contraction of an entire muscle in response to a stimulus
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| Threshold | muscle fiber will not respond to stimulus until that stimulus reaches a level
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| Lag phase | time between application of a stimulus to a motor neuron and the beginning of a contraction
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| contraction phase | time of contraction
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| Relaxation phase | time during which the muscle relaxes
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| Tetany | muscle remains contracted without relaxing
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| recuitment | increase in number of motor unit being activated
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Created by:
Dalton Willis
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