origin
insertion
belly
mechanical advantage
mechanical disadvantage
what is most closely related to range of motion? (fiber
length or cross-sectional area of muscle?)
what is most closely related to power? (fiber
length or cross-sectional area of muscle?)
agonist or prime mover
antagonist
synergist
fixator
compartment
deltoid
O=clavicle, scapula (acromion, spine)
I=humerus
(deltoid tuberosity)
A=flexion, extension, abduction
(of arm)
coracobrachialis
O=scapula (coracoid
process)
I=humerus
(mid medial shaft)
A=flexion, adduction (of arm)
latissimus dorsi
O=T vertebrae, L vertebrae, inf.
4 ribs, ilium (crest)
I=humerus
(intertubercular sulcus)
A=extension, adduction (of arm)
teres major
O=scapula (inf. angle)
I=humerus
(intertubercular sulcus)
A=extension, adduction (of arm)
supraspinatus
O=scapula (supraspinous
fossa)
I=humerus
(greater tubercle)
A=abduction (of arm)
pectoralis major
O=clavicle, sternum, ribcage
I=humerus
(greater tubercle, intertubercular sulcus)
A=adduction (of arm)
triceps brachii
O=scapula (below glenoid), humerus (posterior)
I=ulna (olecranon)
A=extension (of forearm)
brachialis
O=humerus
(distal anterior)
I=ulna (coronoid
process & tuberosity)
A=flexion (of forearm)
biceps brachii
O=scapula (above glenoid, coracoid process)
I=radius (radial tuberosity)
A=flexion (of forearm)
supinator
O=humerus
(lateral epicondyle), ulna
I=radius (lateral proximal 1/3rd)
A=supination
(of forearm)
pronator teres
O=humerus
(medial epicondyle), ulna (coronoid
process)
I=radius (mid lateral surface)
A=pronation
(of forearm)
pronator quadratus
O=ulna (distal)
I=radius (distal)
A=pronation
(of forearm)
gluteus maximus
O=ilium,
sacrum, coccyx
I=femur
A=extension (of thigh/leg at
hip)
psoas major
O=L vertebrae
I=femur (lesser trochanter)
A=flexion (of thigh/leg at hip)
iliacus
O=ilium
(iliac fossa), sacrum
I=femur (lesser trochanter)
A=flexion (of thigh/leg at hip)
adductor longus
O=pubis
I=femur (linea
aspera)
A=adduction (of thigh/leg at
hip)
gluteus medius
O=ilium
I=femur (greater trochanter)
A=abduction (of thigh/leg at
hip)
HAMSTRINGS
semimembranosus
O=ischium
(ischial tuberosity)
I=tibia (medial condyle)
A=flexion (of lower leg at knee)
semitendinosus
O=ischium
(ischial tuberosity)
I=tibia (proximal medial shaft)
A=flexion (of lower leg at knee)
biceps femoris
O=ischium
(ischial tuberosity), femur
(linea aspera)
I=fibula (head), tibia (lateral condyle)
A=flexion (of lower leg at knee)
QUADRICEPS
FEMORIS
rectus femoris
O=ilium
I=patella (tibial
tuberosity)
A=extension (of lower leg at
knee)
vastus medialis
O=femur (anteromedial)
I=patella (tibial
tuberosity)
A=extension (of lower leg at
knee)
vastus lateralis
O=femur (anterolateral)
I=patella (tibial
tuberosity)
A=extension (of lower leg at
knee)
vastus intermedius
O=femur (anterolateral)
I=patella (tibial
tuberosity)
A=extension (of lower leg at
knee)