Muscle Tables Flashcards
Flexor pollicis brevis
Origin: Trapezium
Insertion: Proximal phalanx of first digit
Action: Flexes thumb
Opponens pollicis
Origin: Trapezium
Insertion: First metacarpal
Action: Opposes thumb
Erector spinae: Iliocostalis, Longissimus, Spinalis
Origin: Vertebral column
Insertion: vertebral column
Action: Extends vertebral column
Coracobrachialis
Origin: Coracoid process of scapula
Insertion: Midmedial shaft of humerus
Action: Flexes
Flexor carpi ulnaris
Origin: Medial epicondyle of humerus
Insertion: fifth metacarpal
Action: Flexes hand
Fibularis longus
Origin: shaft of fibula
Insertion: First metatarsal
Action: Everts foot
Semispinalis
Origin: C7-T12
Insertion: Occipital bone
Action: Extends head
Flexor hallucis longus
Origin: Midshaft of fibula
Insertion: Distal phalanx of hallux (big toe)
Action: Flexes hallux
Trapezius
Origin: Posterior occipital bone
Insertion: spine of scapula
Action: Extends head
Sternohyoid
Origin: Manubrium of sternum
Insertion: Hyoid
Action: Depresses hyoid
Buccinator
Origin: Maxilla and mandible near molar teeth
Insertion: Orbicularis oris
Action: Compresses cheek
Serratus anterior
Origin: Ribs 1-8
Insertion: inferior angle of scapula
Action: Abducts scapula
Mylohyoid
Origin: Inner, inferior margin of mandible
Insertion: Body of hyoid
Action: Elevates hyoid
Frontalis
Origin: Galea aponeurotica
Insertion: Skin superior to orbit
Action: Raises eyebrows
Depressor labii inferioris
Origin: Lateral mandible
Insertion: Muscles and skin of lower lip
Action: Depresses lower lip
Omohyoid
Origin: Superior surface of scapula
Insertion: Hyoid
Action: Depresses hyoid
Extensor carpi radialis brevis
Origin: Lateral epicondyle of humerus
Insertion: Third metacarpal
Action: Extends hand
Biceps brachii
Origin: coracoid process of scapula
Insertion: Radial tuberosity
Action: Flexes arm
Orbicularis oculi
Origin: Frontal and maxilla on medial margin of orbit
Insertion: Skin of eyelid
Action: Closes eyelid
Multifidus
Origin: sacrum
Insertion: Vertebral column
Action: Extends vertebral column
Gluteus minimus
Origin: Outer iliac blade
Insertion: Greater trochanter of femur
Action: Abducts thigh
Pterygoids (medial, lateral)
Origin: Pterygoid processes of sphenoid bone
Insertion: Medial ramus of mandible
Action: Medial gliding of mandible (for chewing)
Tensor fascia latae
Origin: Iliac crest
Insertion: Iliotibial band of fasciae latae
Action: abducts thigh
Extensor pollicis longus and brevis
Origin: interosseous membrane
Insertion: Proximal and distal phalanges of pollex (thumb)
Action: Extends thumb
Splenius
Origin: Ligamentum nuchae
Insertion: occipital bone
Action: Extends head
Temporalis
Origin: Temporal fossa
Insertion: ramus of mandible
Action: Closes mandible
Flexor pollicis longus
Origin: interosseous membrane
Insertion: Distal phalanx of pollex (thumb)
Action: Flexes thumb
Zygomaticus (major, minor)
Origin: Zygomatic bone
Insertion: Muscle and skin at angle of mouth
Action: Elevates corners of mouth (in smiling and laughing)
Tibialis anterior
Origin: Lateral condyle of tibia
Insertion: First metatarsal
Action: Dorsiflexes
Adductor brevis
Origin: Pubis
Insertion: Linea aspera at proximal portion of femur
Action: Adducts thigh
Vastus medialis
Origin: Linea aspera
Insertion: Tibial tuberosity by the patellar tendon
Action: Extends leg
Levator scapulae
Origin: C1-4
Insertion: Upper vertebral border of scapula
Action: rotates neck
Transversus abdominis
Origin: iliac crest
Insertion: Linea alba
Action: Compresses abdominal wall
Soleus
Origin: Posterior, proximal tibia
Insertion: Calcaneus by the calcaneal tendon
Action: Plantar flexes foot
Triceps brachii
Origin: Infraglenoid tuberosity of scapula
Insertion: Olecranon process of ulna
Action: Extends arm,
Rectus femoris
Origin: Anterior inferior iliac spine
Insertion: Tibial tuberosity by the patellar tendon
Action: extends leg
Internal abdominal oblique
Origin: iliac crest
Insertion: Linea alba
Action: Compresses abdominal wall
Extensor carpi ulnaris
Origin: Lateral epicondyle of humerus
Insertion: Fifth metacarpal
Action: Extends hand
Extensor carpi radialis longus
Origin: Lateral supracondylar ridge of humerus
Insertion: Second metacarpal
Action: Extends hand
Masseter
Origin: Zygomatic arch
Insertion: Angle and ramus of mandible
Action: Closes mandible
Fibularis tertius
Origin: Anterior, distal fibula
Insertion: Dorsum of fifth metatarsal
Action: everts foot
Semitendinosus
Origin: Ischial tuberosity
Insertion: Proximal, medial tibia
Action: Extends thigh