Today and Wednesday – muscles! • how muscles work – in general • muscles that move the mandible • abdominal wall muscles • anterior and posterior • inferior and superior • inguinal hernia’s • muscles that move the humerus and scapula • rotator cuff tears, impingement syndrome • muscles that move the femur • sprains, strains and “Charley horse” • muscles that move the foot • shin splints, anterior compartment syndrome • Achilles tendon injuries
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Today and Wednesday – muscles! how muscles work – in general muscles that move the mandible abdominal wall muscles anterior and posterior inferior and.
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Today and Wednesday – muscles!
• how muscles work – in general• muscles that move the mandible• abdominal wall muscles
• anterior and posterior• inferior and superior• inguinal hernia’s
• muscles that move the humerus and scapula• rotator cuff tears, impingement syndrome
• muscles that move the femur• sprains, strains and “Charley horse”
• muscles that move the foot• shin splints, anterior compartment syndrome• Achilles tendon injuries
skeletal cardiac smooth
Tendon
Deep fascia
EpimysiumEpi = upon, above
PerimysiumPeri = around
EndomysiumEndo = within
Connective tissue wrappings of skeletal muscle
Myo, mys = muscle
1 muscle fiber = 1 muscle cellMuscle cells are multinucleated
Working outAtrophy & agingSteroids
Bellies
Insertion
Insertion
Origins Origins
Muscle attachments
Ligaments: bone to boneTendons: muscle to bone
Direct vs Indirect attachment
Aponeurosis
Muscle to skinMuscle to muscle via tendon sheet
Synaptic vesiclescontaining Ach (acetylcholine)
Motor endplate
Calcium + ATP = muscle contractionLow blood Ca and muscle