Anatomy - Muscles and Nerves Flashcards
limb/appendicular muscles
attach from trunk to limb bones or only to limb bones
trunk/axial muscles
attach only to the trunk
tendons are made of…
fibrous, dense regular connective tissue
the origin of a muscle
the proximal /superior /medial attachment
the insertion of a muscle
the distal/ inferior/ lateral attachment
attachment of tendon to bone
tendon fibres are embedded in the periosteum
aponeurosis
thin, broad, flat tendons. e.g. anterior tendons of the abdominal oblique muscles
a diaphragm
a muscle that crosses the medial sagittal plane
action of the diaphragm
descends on contraction. ascends on relaxation
action of anterior fibres of the deltoid
flexion
action of middle fibres of the deltoid
abduction
action of posterior fibres of the deltoid
extension
main action of the deltoid
abduction
location of smooth muscle
organs and blood vessels
location of cardiac muscle
the heart wall
synergistic muscles
stabilise muscle movements to keep them even, assists the movement of a joint
fixator /stabilising muscles
stabilise a joint so it can move efficiently without risk of dislocation. e.g. rotator cuff muscles around a shoulder joint
intramuscular septa
separate muscles into muscle compartments. extends from the periosteum of the bone to the deep fascia surrounding the muscles