Muscles- Physiology Flashcards
functions (7)
movement, stability, control of openings and passages, thermogenesis, hormone secretion, glycemic control
study of skeletal muscles
myology
endomysium
thin sleeve of loose connective tissue surrounding each muscle fiber
perimysium
thicker connective tissue sheath wraps muscle fibers together in bundles called fascicles
epimysium
fibrous sheath that surrounds the entire muscle
fascia
sheet of connective tissue that separates muscles from each other and SQ tissue
fusiform
biceps brachii
parallel
rectus abdominus
triangular
pectoralis major
unipennate
palmar interosseous
bipennate
rectus femoris
multipennate
deltoid
circular
orbicularis oculi
direct attachment
no visible tendon to naked eye, muscle seems to emerge from bone
indirect attachment
gap bridged by visible and palpable tendons
aponeurosis
broad sheath of tendon
retinaculum
band of thickened deep fascia around a tendon to hold it in place
intrinsic muscle
fully contained within a specific organ or region
extrinsic muscle
not fully contained within specified organ or region but acting on it
muscle action
movement produced by contraction of a particular muscle, or its role in preventing an unwanted movement; the function of a muscle
prime mover
muscle that produces the most force in a given joint action (agonist)
synergist
muscle that works with prime mover
antagonist
muscle that opposes the prime mover
fixator
prevents bone from moving
