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Musculoanatonomical2
Anatomy
| Muscle | Action | Attachment (Origin) | Attachment (Insertion) | Innervation |
|---|---|---|---|---|
| Epicranius:Frontalis | raises eyebrows | aponeurosis | Skin of eyebrows | Facial |
| Epicranius:Occipitalis | Pulls scalp post | Occipital bone | aponeurosis | Facial |
| Orbicularis Oculi | Close eye lids | Frontal and maxillary bones | Skin of eyelid | Facial |
| Orbicularis Oris | Close lips | Maxilla and mandible | Skin of mouth | Facial |
| Zygomaticus | Elevates corners of mouth | Zygomatic bone | Skin and muscle at corners of mouth | Facial |
| Buccinator | Draws corner of lips laterally | Molar region of mandible and maxillae | Orbicularis oris | Facial |
| Mentalis | Protrudes lower lip | Anterior mandible | Skin of chin | Facial |
| Masseter | Elevate mandible | Zygomatic arch and maxilla | Angle and ramus of mandible | Trigeminal |
| Temporalis | Elevate and retract mandible | Temporal fossa | Coronoid process of mandible | Trigeminal |
| Platysma | Depress mandible | Fascia of chest | Mandible | Facial |
| Sternocleidomastoid | Flex neck and rotate head | Manubrium of sternum and clavicle | Mastoid process of temporal bone | Accessory |
| Scalenes | Flex and rotate neck, elevate ribs | Transverse process of cervical vertebrae | Ribs 1 and 2 | Cervical & brachial plexuses |
| Levator Scapulae | Raises scapula | Transverse process of cervical vertebr | Sup border Scapula | Cervical & brachial plexuses |
| Rhomboids | Pulls scapula medially | Spinous processes of C7-T3 | Medial border of scapula | Scapular |
| Pectoralis major | Flexes and adducts arm | Clavicle, sternum, ribs 1-6 | Humerus | Pectoral |
| Pectoralis minor | Moves scapula forward | Ribs 3-5 | Coracoid process | Pectoral |
| Deltoid | Abduct Humerus | Clavicle, acromion and spine of scapula | Deltoid tuberosity | Axillary |
| Teres major | Extend, rotate, adduct humerus | Scapula | Humerus | Scapular |
| Teres minor | Rotate humerus | Scapula | Humerus | Axillary |
| Supraspinatus | Abduct humerus | Supraspinous fossa | Humerus | Suprascapular |
| Infraspinatus | Rotate humerus | Infraspinous fossa | Humerus | Suprascapular |
| Subscapularis | Rotate humerus | Subscapular fossa | Humerus | Subscapularis |
| Trapezius | Extends head, moves scapula | Occiput, spinous process C7-T12 | Scapular spine and acromion | Accessory |
| Latissimus Dorsi | Extend, abduct and rotate arm | Spinous process T6-L5 | Humerus | Scapular |
| Triceps Brachii | Forearm extension | Glenoid cavity, radial groove of humerus | Olecranon process of ulna | Radial |
| Biceps Brachii | Flexion of elbow and supination of forearm | Coracoid process | Radial tuberosity | Musculocutaneous |
| Coracobrachialis | Adduction and flexion at shoulder | Coracoid process | Shaft of humerus | Musculocutaneous |
| Brachialis | Flexor of elbow | Humerus | Coronoid process | Musculocutaneous |
| Brachioradialis | Synergist of elbow flexion | Humerus | Styloid process of radius | Radial |
| Pronator teres | Pronation of forearm | M epicondyle of humerus, coronoid process of ulna | Radius | Median |
| Flexor carpi radialis | Flexor of wrist | M epicondyle of humerus | Base of metacarpals 2 and 3 | Median |
| Palmaris longus | Flexor of wrist | M epicondyle of humerus | Palmar aponeurosis | Median |
| Flexor carpi ulnaris | Flexion and adduction of wrist | M epicondyle of humerus and Olecranon of ulna | Pisiform, hamate, and 5th metacarpal | Ulnar |
| Extensor carpi radialis: brevis & longus | Extend and abduct wrist | L epicondyle of humerus | Base of metacarpals 2 and 3 | Radial |
| Extensor digitorum | Finger extension | L epicondyle of humerus | Distal phalanges | Radial |
| Extensor carpi ulnaris | Extend and adduct wrist | L epicondyle of humerus | Base of metacarpal 5 | Radial |
| Supinator | Supinate arm | L | epicondyle of humerus; proximal ulna | Proximal end of radius |
| Anconeus | Extend elbow | epicondyle of humerus | Lateral aspect of Olecranon | Radial |
| Sartorius | Flex knee, abduct, laterally rotate thigh | Iliac spine | Tibia | Femoral |
| Iliacus | Flexion at hip | Iliac fossa | Just inferior to lesser trochanter | Femoral |
| Psoas major | Flexion at hip, lumbar intervertebrals | Transverse process of T12-L5 | Lesser trochanter of femur | Anterior rami L1-L3 |
| Adductors- magnus, longus, and brevis | Adduct, medially rotate, flex thigh | Ischium, pubis | Femur | Obturator |
| Gracilis | Adduct thigh, medially rotate and flex knee | Pubis | Tibia | Obturator |
| Quadriceps femoris | Extend knee (all) | Femoral | ||
| Rectus femoris (Quadriceps femoris) | flex hip, extend knee | Iliac spine and acetabulum | Tibial tuberosity and patella | Femoral |
| Vastus lateralis (Quadriceps femoris) | extend knee | Greater trochanter | Tibial tuberosity and patella | Femoral |
| Vastus medialis (Quadriceps femoris) | extend knee | Femur | Tibial tuberosity and patella | Femoral |
| Vastus intermedius (Quadriceps femoris) | extend knee | Femur | Tibial tuberosity and patella | Femoral |
| Tensor Fasciae Latae | Flex, abduct thigh and medial rotation | Ilium | Iliotibial tract | Gluteal |
| Gluteus Maximus | Thigh extensor | Ilium, sacrum, coccyx | Gluteal tuberosity of femur | Gluteal |
| Gluteus medius | Abduct and medially rotate thigh | Ilium | Greater trochanter of femur | Gluteal |
| Gluteus minimus | Abduct and medially rotate thigh | Ilium | Greater trochanter of femur | Gluteal |
| Piriformis | Lateral rotation, abduction of hip | Sacrum | Greater trochanter | Piriformis |
| Fibularis (peroneus) longus | Plantar flexion | Proximal fibula | Metatarsal 1 and medial cuneiform | Fibular (Peroneal) |
| Fibularis (peroneus) brevis | Plantar flexion | Distal fibula | Metatarsal 5 | Fibular (Peroneal) |
| Tibialis Anterior | Dorsiflexion and inversion | Tibia | Tarsals and metatarsal 1 | Fibular (Peroneal) |
| Extensor digitorum longus | Toe extension, dorsiflexion | Lateral condyle of tibia, proximal fibula | Middle and distal phalanges 2-5 | Fibular (Peroneal) |
| Gastrocnemius | Plantar flexion | Femur | Calcaneus | Tibial |
| Soleus | Plantar flexion | Tibia and fibula | Calcaneus | Tibial |
| Tibialis posterior | Inversion, plantar flexion | Tibia and fibula | Tarsals, metatarsals | Tibial |
| Popliteus | Medial flexion and rotate knee | Femur lateral condyle | Proximal tibia | Tibial |
| Hamstrings | Extend thigh, flex knee, rotate leg | Ischial tuberosity | Tibial, sciatic | |
| Biceps femoris (hamstring) | Extend thigh, flex knee, rotate leg | Ischial tuberosity | Fibula and tibia | Tibial, sciatic |
| Semitendinosus (hamstring) | Extend thigh, flex knee, rotate leg | Ischial tuberosity | Tibia | Tibial, sciatic |
| Semimembranosus(hamstring) | Extend thigh, flex knee, rotate leg | Ischial tuberosity | Tibia and femur | Tibial, sciatic |
| Pectoralis Minor | Elevates upper ribs | Ribs 3-5 | Coracoid process | Pectoral |
| Serratus Anterior | Move scapula forward, rotate scapula | Ribs 1-8 | Medial Border Scapula | Long thoracic |
| External Intercostals | Elevate rib cage, aid inspiration | Infer border rib above | Superior border rib below | Intercostal |
| Internal Intercostals | Depress rib cage, aid expiration | Supr border rib below | Inferior border rib above | Intercostal |
| Diaphragm | Prime mover of inspiration, flattens when contracts, lengthens thoracic cavity | Phrenic | ||
| Rectus Abdominis | Flex and rotate vertebral column | Pubic crest and symphysis | Xiphoid process and ribs 5-7 (cartilage) | Intercostal |
| External Oblique | Flex and rotate vertebral column, trunk rotation and lateral flexion | Ribs 5-12 | Pubic crest and iliac crest, linea alba | Intercostal |
| Internal Oblique | Same as external oblique | Iliac crest | Ribs 9-12 (cartilage), linea alba | Intercostal |
| Transversus Abdominis | Compress abdominal contents | Ribs 6-12 (cartilage) | Pubic crest, linea alba | Intercostal and Ilioinguinal |
| Trapezius | Extend neck; raise, rotate, and adduct scapula | Occipital bone and spinous process of thoracic vertebrae | Acromion and spine of scapula | Accessory |
| Latissimus Dorsi | Arm extension, adduct and rotate arm | Spinous process of T6-L5 | Lateral clavicle, acromion, spine of scapula | Thoracodorsal |
| Erector Spinae: Iliocostalis, Longissimus, Spinalis | As a pair: Extend neck and vertebral column | Transverse process of C7-T12 | Occipital bone and spinous process of cervical vertebrae | (dorsal primary rami of spinal nerves C1-S5) |