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Human Anatomy 72616
Muscle | Origin | Insertion | Action |
---|---|---|---|
Buccinator (cheek) | Mandible, maxilla | Orbicularis oris | Pulls cheeks inward |
Depressor labii inferioris (lip) | Body of mandible lateral to midline | Skin and muscle of lower lip | Pulls lower lip inferiorly |
Levator labii superioris (lip) | Zygomatic bone and infraorbital margin of maxilla | Skin and muscle of upper lip | Opens lips, raises upper lip |
Medial pterygoids | Medial surface of lateral pterygoid plate of sphenoid bone, maxilla, palatine bone | Medial surface of mandible near its angle | Protract mandible and grinding movements |
Lateral pterygoids | Greater wing and lateral ptyregoid plate of sphenoid bone | Condylar process of mandible and capsule of temporomandibular joint | Protract mandible, grinding movements |
Temporalis | Temporal, parietal bones | Coronoid process of mandible | Elevates the mandible |
Masseter (Zygomatic) | Zygomatic bone | Ramus & angle of mandible | Elevates the mandible |
Sternocleidomastoid | Sternum, clavicle | Mastoid process | Flexes and rotates the neck |
External abdominal oblique (Iliac crest) | Lower rib | Iliac crest | Flexion, rotation of trunk |
Internal abdominal oblique (Lower rib) | Iliac crest | Lower rib | Flexion, rotation of trunk |
Rectus abdominis (pubis) | Pubis | Xiphoid process, costal cartilages 5 to 7 | Flexes, rotates trunk |
Pectoralis major (1-7) | Clavicle, sternum, ribs 1 to 7, external oblique aponeurosis | Intertubercular sulcus or groove | Flexion, medial rotation, adduction at the shoulder |
Pectoralis minor (3-5) | Ribs 3 to 5 | Coracoid process of scapula | Depression of the scapula |
Trapezius spinous process of c7 | Occipital bone, ligamentum nuchae, spinous process of C7 and all of thoracic vertebrae | Acromion, spine, and lateral third of clavicle | Elevation, depression, and adduction of the scapula |
Latissimus dorsi, | Latissimus dorsi: Lumbodorsal fascia to spines of lower 3 to 4 ribs, iliac crest | Latissimus dorsi: Intertubercular sulcus of humerus insertion tendon fused with latissimus dorsi | Extension and adduction of the shoulder |
Rhomboideus major C7 to T5 | Spinous process of C7 to T5 | Medial surface of scapula | Adduction of the scapula |
Rhomboideus minor C7 to T5 | Spinous process of C7 to T5 | Medial surface of scapula | Adduction of the scapula |
Biceps brachii long head | Superior lip of glenoid fossa | Radial tuberosity | Weak flexion at elbow |
Biceps brachii short head | Coracoid process of scapula | Radial tuberosity | Supernation of forearm |
Brachialis | Distal humerus | Coronoid process of ulna and joint capsule of elbow | Flex the elbow |
Brachioradialis | Distal humerus | Radial styloid process | Flex the elbow |
Triceps brachii lateral head | Proximal humerus | olecranon | Extend the elbow |
Triceps brachii long head | Inferior lip of the glenoid fossa | olecranon | Extend the elbow |
Triceps brachii medial head | Proximal & medial humerus | olecranon | Extend the elbow |
Supraspinatus, teres major | Supraspinous fossa | Greater tubercle | Abduction at the shoulder |
Infraspinatus, teres minor | Infraspinous fossa | Greater tubercle | Lateral rotation at the shoulder |
Extensor carpi radialis longus | Epicondyle of humerus | metacarpals | Extension of the wrist |
Extensor carpi radialis brevis | Epicondyle of humerus | metacarpals | Extension of the wrist |
Extensor carpi ulnaris | Epicondyle of humerus | metacarpals | Extension of the wrist |
Extensor digitorum | Epicondyle of humerus | phalanges | Extension of wrist & fingers |
Pronator teres | Epicondyle of humerus, coronoid process of ulna | Lateral radius | Pronates forearm |
Supinator | Epicondyle of humerus epicondyle | Proximal end of radius | Supinates forearm |
Flexor carpi ulnaris | Medial epicondyle of humerus | Metacarpals | Flexion of wrist |
Flexor carpi radialis | Medial epicondyle of humerus | Metacarpals | Flexion of wrist |
palmaris longus | Medial epicondyle of humerus | Metacarpals | Flexion of wrist |
Gluteus maximus | Posterior ilium, sacrum, coccyx | Gluteal tuberosity of femur, iliotibial tract | Extension & lateral rotation of hip |
Gluteus medius | Posterior ilium, sacrum, coccyx | Gluteal tuberosity of femur, iliotibial tract | Extension & lateral rotation of hip |
Gracilis | Inferior ramus and body of pubis and ischial ramus | Tibia inferior to medial condyle | Adduction at hip, flexion at knee |
Adductor magnus | pubis | Linea aspera | Adduction at hip |
Sartorius | Anterior superior iliac spine | Medial surface of proximal tibia | Flexion at hip and knee, lateral rotation at hip |
Rectus femoris | Anterior inferior iliac spine | Patella, tibial tuberosity | Flexion at hip, extension at knee |
Vastus intermedius | Anterior & lateral diaphysis of femur | Patella, tibial tuberosity | Extends knee |
Vastus lateralis | Greater trochanter, intertrochanteric line | Patella, tibial tuberosity | Extends knee |
Vastus medialis | Intertrochanteric line, linea aspera | Patella, tibial tuberosity | Extends knee |
Biceps femoris long head | Ischial tuberosity | Lateral tibial condyle, head of fibula | Flexion at knee, extension at hip |
Biceps femoris short head | Linea aspera | Only flexion at knee | |
Semimembranosus | Ischial tuberosity | Medial tibial condyle | Extension of hip, flexion of knee |
Tibialis anterior | Lateral condyle of tibia, interosseous membrane | Medial cuneiform and first metatarsal bone | Dorsiflexion at ankle, inversion of foot |
Extensor digitorum longus | Interosseous membrane | toes | Dorsiflexion at ankle, extension of toes |
Fibularis (peroneus) longus | fibula | metatarsals | Eversion of foot |
Fibularis (peroneus) brevis | fibula | metatarsals | Eversion of foot |
Gastrocnemius | Medial and lateral condyle of femur | calcaneus | Plantarflexion at ankle and flexion at knee |
Teres major | Teres major: Inferior angle of scapula | Teres major: Lesser tubercle of humerus; insertion tendon fused with latissimus dorsi | Extension and adduction of the shoulder |