Chapter 9 The Muscular System
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| muscular system | show 🗑
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| show | provides mobility, provides movement, and produces heat
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| show | delicate connective tissue covering each muscle fiber
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| show | bundles of muscle fiber
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| show | surrounded by perimysiium and bundled into the muscle
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| epimysium | show 🗑
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| show | what muscle cells are specialized for
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| muscle fibers | show 🗑
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| tendons | show 🗑
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| show | made of dense fibrous connective tissue and a continuation of deep fascia
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| show | merge with the periosteum to anchor to bone
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| show | special name for the cell membrane of the muscle cell
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| show | special name for cytoplasm of muscle cell
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| sarcoplasm | show 🗑
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| sarcomeres | show 🗑
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| show | long protein bundles that fill the sarcoplasm of a muscle fiber
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| muscle fiber | show 🗑
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| show | fine protein fibers that make up a myofibril
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| z-disc | show 🗑
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| actin filaments | show 🗑
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| myosin filaments | show 🗑
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| tintin filaments | show 🗑
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| actin | show 🗑
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| troponin and tropomyosin | show 🗑
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| show | attach to actin and block myosin from forming a cross bridge
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| motor nerve | show 🗑
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| show | enlarged end of the motor neuron and contains sacs of neurotransmitter acetylcholine
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| show | chemical messenger released from the end of a motor neuron
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| synapse | show 🗑
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| exocytosis | show 🗑
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| show | ACh attaches to this in the sarcolemma
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| show | ACH causes this in the sarcolemma
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| cholinesterase | show 🗑
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| T-Tubules | show 🗑
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| sarcoplasmic reticulum | show 🗑
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| contraction | show 🗑
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| show | where the muscle originates, usually the more stationary of the two ends
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| belly | show 🗑
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| show | opposite end of the origin, crosses at least one joint from the origin
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| show | determines what the action of the muscle is
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| heads | show 🗑
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| action | show 🗑
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| show | the primary muscle that brings about the desired movement
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| antagonist | show 🗑
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| show | secondary muscles that bring about the desired movement. assists the prime mover
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| show | heat production from normal muscle metabolism
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| show | is due to friction and chemical reactions, increased with increased activity
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| show | largest
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| minimus | show 🗑
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| show | large
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| minor | show 🗑
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| show | long
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| show | short
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| show | triangular
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| rhomboid | show 🗑
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| show | sawtoothed
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| show | trapezoidal
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| show | chest
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| show | upper arm
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| show | radius bone
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| show | buttock
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| femoris | show 🗑
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| sterno | show 🗑
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| show | clavicle
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| mastoid | show 🗑
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| show | fingers or toes
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| pollicis | show 🗑
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| show | big toe
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| show | lateral
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| show | medial
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| intermedium | show 🗑
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| profundus | show 🗑
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| show | superficial
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| biceps | show 🗑
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| show | 3 heads
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| quadriceps | show 🗑
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| rectus | show 🗑
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| show | sideways/across
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| show | diagonal
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| show | adducts
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| show | abducts
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| flexor | show 🗑
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| extensor | show 🗑
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| show | elevates
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| show | frontalis, orbicularis oculi, masseter, temporalis, sternocleidomastoid and orbicularis oris
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| abdominal wall | show 🗑
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| show | deltoid, pectoralis major, serratus anterior, latissimus dorsi, and trapezius
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| show | brachialis, biceps brachii, triceps brachii, brachioradialis, hand and digit extensors, and hand and digit flexors
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| show | rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis
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| glutes | show 🗑
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| hamstrings | show 🗑
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| show | gastrocnemeus, soleus and plantaris
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| show | tibalis anterior
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| show | 25% of population does not have one
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