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jacqueline morales p1 Muscular System - Coggle Diagram
jacqueline morales p1 Muscular System
skeletal muscles
smooth muscle
skeletal muscles
cardiac muscles
sliding filament theory of muscle contraction
impulse travels down a motor neuron axon
motor neuron relases nerotransmitters acetylcholine
muscle fiber exerts
ACh binds to ACh receptos in ms membrane
thin filaments pull towards center
sarcolemma is stimulated
the impulse reaches sarcroplasmic rectiulums
tropomrosin molecules move
calcium ions diifuse
muscle coverings
outermost connective tissue sheath surrounding muscle
muscular system disorders
muscular dystophy
despription: muscle weakness & atrophy
cause: genetic
symptoms: eyelid drooping
treatment: no known cure
fibromyalgia
description: muscle pain
cause: infection
symptoms: joint pain
treatment: physical therapy
myasthenia gravis
description: neuromuscular diorder that blocks neurotransmitter
cause: age
symptoms: double vision
treatment: medications
celebral palsy
description: paralysis causing muscle weakness
cause: head injury
symptoms: seizures
treatment: no cure
myositis
cause: muscle trauma
symptoms: rash
description: inflamation of muscle
treatment: medication
3 types of muscles & their functions
cardiac muscle
pumping action of the heart
skeletal muscle
movemnet of bones & joints
smooth muscle
movement of vscera peristals is vacoconstrition
action potential in a muscle fiber
origin
less movable end of skeletal muscle
insertion
more movable end of skeletal muscle
sarcomere
myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band
neuromuscular junction
synaptic connection between the terminal end of a motor nerve and a muscle
major functions of the muscular system
they are organs that generate force to cause all types of movement