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muscle origins, etc
origin, insertion, action
muscle | origin | insertion | action |
---|---|---|---|
zygomaticus major | zygomatic bone | skin at corners of mouth | smiling |
buccinator | mandible | orbicularis oris | compresses cheeks |
masseter | zygomatic arch | mandible | elevates mandible |
platysma | pectoralis major | mandible | depresses mandible |
sternocleidmastoid | sternum | mastoid process | bows head |
external intercostals | inferior border of rib above | superior border of rib below | inspiration |
internal intercostals | superior border of rib below | inferior border of rib above | expiration |
diaphragm | sternum | central tendon | inspiration |
pectoralis major | clavicle | humerus | adducts arm |
serratus anterior | outer surface of ribs 1-8 | scapula | rotates scapula forward |
trapezius | scapula | occipital bone | shrugs shoulders |
latissimus dorsi | last 4 ribs | humerus | adducts arms |
external oblique | last 8 ribs | linea alba | compresses abdominal contents |
internal oblique | iliac crest | last 3 or 4 ribs | compresses abdominal contents |
transversus abdominis | iliac crest | xiphoid process | compresses abdominal contents |
rectus abdominis | pubic crest | xiphoid process | compresses abdominal contents |
deltoid | clavicle | humerus | abducts arm |
biceps brachii | LH: above scapula | humerus | supinates arm |
triceps brachii | LoH: scapula | ulna | extends forearm |
flexor digitorum superficialis | radius | phalanges 2-5 | flexes fingers |
flexor carpi radialis | humerus | metacarpals 1-2 | flexes wrist |
flexor carpi ulnaris | humerus | 5th metacarpal | flexes wrist |
extensor carpi radialis | humerus | metacarpals 2-3 | extends wrist |
extensor carpi ulnaris | humerus | 5th metacarpal | adducts little finger |
extensor digitorum | humerus | metacarpals 2-5 | extends wrist |
gluteus maximus | coccyx | femur | extends thigh |
gracilis | pubis | tibia | adducts thigh |
tensor fascia latae | iliac crest | tibia | abducts thigh |
soleus | tibia | calcaneus | plantar flexion |
gastrocnemius | knee capsule | calcaneus | plantar flexion |
sartorius | iliac spine | tibia | flexes thigh |
biceps femoris | LH: ischial tuberosity | tibia | flexes leg |
semitendinosus | ischial tuberosity | tibia | flexes leg |
semimembranosus | ischial tuberosity | tibia | flexes leg |
rectus femorus | iliac spine | tibial tuberosity | flexes leg |
vastus latralis | femur | tibial tuberosity | flexes leg |
vastus medialis | femur | tibial tuberosity | flexes leg |
vastus intermedius | femur | ischial tuberosity | flexes leg |
tibialis anterior | tibia | metatarsal 1 | dorsiflexion |
extensor digitorum longus | tibia | phalanges 2-5 | dorsiflexion |
fibularis [peroneus] longus | fibula | metatarsal 1 | plantar flexion |
orbicularis oculi | frontal bone | eyelids | blinking |
orbicularis oris | mandible | skin at corners of mouth | puckers lips |