ALL Muscles

Extensor Digitorum Longus

O: Lateral Condyle of Tibia
I: Dorsal surface of Phalanges
A: Extends Phalanges of Lateral 4 Toes

Peroneus Longus (Goes behind lateral malleolus) (main action eversion)

O: Lateral condyle tibia and lateral fibula
I: Base of 1st Metatarsal, Medial Cuneiform
A: Everts and assists with Plantar flexion of feet

Peroneus Brevis

O: Distal lat fibula
I: Base of the 5th metatarsal
A: Everts and assists with Plantar flexion of the feet

Peroneus Tertius

O: Distal Anterior Fibula
I: Base of 5th metatarsal
A: Dorsiflex ankle and evert feet

Tibialis Anterior

O: Lateral Condyle TIbia
I: Base of 1st Metatarsal, Medial Cuneiform
A: Dorsiflexion, assists in inversion of the foot

Tibialis Posterior

O: Lateral/Posterior Tibialis, Mediul Fibula
I: Navicular and Cuneiform
A: Inverts and Plantar flexes ankle

Flexor Digitorum Longus

O: Posterior surface of the tibia
I: Plantar surface base of distal phalanges
A: Flexion of four smaller digits

Flexor Hallucis Longus

O: Posterior fibula
I: Plantar surface of the base of the distal phalanx of hallux
A: Flexes all the joints of the big toe and plantar flex ankle joint

Soleus

O: posterior tibia and fib
I: Posterior calcaneus
A: Plantar flex ankle

Gastrocnemius

O: Medial and Lateral Condyle of Femur
I: Posterior Calcaneus
A: Plantar flexion ankle, assists in knee extension

Rectus femoris

O: Ant. Illium (AIIS)
I: quad. Tendon patella-pat tend-tib tuberosity
A: Extends the Knee/ Flexes hip

Vastus Lateralis

O: greater trochanter and lateral femur
I: quad. Tendon patella-pat tend-tib tuberosity
A: Extends Knee

Vastus Intermedius

O: ant femur
I: quad. Tendon patella-pat tend-tib tuberosity
A: Extends Knee

Vastus Medialis

O: Med Femur
I: Quad Tendon patella-pat tend-tib tuberosity
A: extends knee (especially last 10-20 degrees/ terminal knee extension

Sartorius

O: ASIS (ant superior iliac spine
I: proximal medial tibia
A: flex, external rotation, adduct hip, and flex the knee

Biceps Femoris

O: ischial tuberosity (most lateral hammy)
I: Fib Head
A: Flex Knee and extend Hip

Semitendinosus

O: ischial tuberosity
I: Proximal, medial tib
A: Flex Knee and extend hip

Semimembranosus

O: ischial tuberosity
I: medial condyle of tibia
A: Extension of hip and flexion of knee

Tensor Fasciae Latae (TFL)

O: Anterior Iliac crest ASIS
I: Into the iliotibial tract- the IT band insiters on the lat. tib tuberosity
A: Flexion, internal rotation, abducts the hip

Gracilis

O: Ischipoic ramus
I: Proximal med tibia
A: hip adduction, knee flexion

Pes Anserine (muscle group)

I: proximal medial tibia
Greek for Goose Foot (Resembles that)
Sartorius, gracilis, semitendinosus--> SGT
A: flexing the knee

Adductor longus

O: Pubis/ pubic symphysis
I: Mid. linea Aspera
A: Adducts Hip

Iliacus

O: Iliac fossa of ilium
I: Tendon of the psoas major
A: Flexes hip w the psoas major (together called iliopsoas

Psoas Major

O: Transverse process of all lumbar vertebrae
I: Lesser trochanter of femur
A: Flex hip w the help of iliacus

Gluteus Medius

O: External surface of the illum
I: Greater trochanter
A: Abduct hip (major stabilizer for walking)

Gluteus Maximus:

O: Illum, sacrum, coccyx
I: It band and posterior femur
A: extends hip

Rectus abdominis

O: pubic crest and symphysis
I: costal cartilage and xiphoid process
A: Flexes vertebral column

Quadratus lumborum

O: iliac crest
I: Last rib and transverse process of the L1-4
A: extension and lateral flexion of the vertebral column

Erector Spinae

O+I: runs from cervical to lumbar spine
A: extension of the spine

Internal oblique and external obliques

A: laterally flex vertebral column (unilaterally)
Flex vertebral column (bilaterally)
Rotate vertebral column (unilaterally)

Latissimus Dorsi

O: Spinous process T6-S5, iliac crest and lower 4 ribs (16 total)
I: lesser tubercle of humerus
A: Extension and adduction of humerus

Trapezius

O: base of skull and spinous process of c1-t12 (19)
I: post. Clavicle acromion process, spine of scapula
A: elevates and depresses scapula, and draws the head
to the same, side turns the head to the
Opposite, extends the neck

Rhomboid Major

O: T2-T5 spinous process
I: medial border of scapula
A: Adduction, rectraction, and elevates scapula

Pectoralis Major:

O: medial clavicle and lateral sternum
I: Greater tubercle
A: adduction and flexes humerus

Pectoralis Minor

O: outer surface of the ribs 3-5
I: coracoid process of the scapula
A: Depresses scapula

Serratus Anterior

O: Outer surface of the 1-8 ribs
I: Medial border of the scapula
A: draws the scapula forward (protraction)

Supraspinatus

O: supraspinous fossa of the scapula
I: greater tubercle of the humerus
A: Initiates abd, stabilizes the head of humerus, and internal rotation

Infraspinatus

O: Infraspinous fossa of scapula
I: lesser tubercle of humerus
A: Externally rotates the humerus

Teres Minor

O: lat. border of the scapula
I: greater tubercle of humerus
AL external, rotation of the humerus

Subscapularis

O: Subscapular fossa of the scapula
I: lesser tubercle of humerus
A: internal rotation of humerus

Teres Major

O: Inf. Angel of Scap
I: Below lesser tub of hum
A: Add, Ext. Hum

Deltoid: (ant,mid,post)

O: Anterior-clavicle, mid-acromion, post-scapula spine
I: deltoid tuberosity of humerus
A: Anterior-flexion, mid-abduction,post. Extension of humerus

Biceps Brachii

O: Short Head- coracoid process of the scapula, long head-glenoid fossa of the scapula
I:Radial Tuberosity
A: Flex. Elbow, supinates forearm

Triceps Brachii

O: lat. scao and post humerus
I: olecranon process of the ulna
A: extension of elbow

Brachioradialis

O:Distal lateral humerus
I: Styloid process of the radius
A: flex elbow, assists w pronation and supination

Extensor carpi ulnaris

A: lat. epicondyle
I: base of the 5th metacarpal
A: extension and adduction of wrist

Extensor carpi radialis brevis

O: lateral epicondyle and radial collateral ligament of the elbow
I: dorsal surface of 3rd metacarpal
A: extends and assists w/ abd of wrist

Flexor carpi Ulnaris

O: med. Epicondyle of the humerus
I: med. Carpals and 5th metacarpal
A: flex and adduct wrist

Flexor Carpi Radialis

O: med epicondyle of the humerus
I: bases of the 2nd and 3rd metatarsals
A: flex and abd. Wrist

Palmaris Longus

O: Med epicondyle
I: flexor retinaculum
A:flex wrist

Palmaris Longus

O: Med epicondyle
I: flexor retinaculum
A:flex wrist

Extensor Digitorum

O: lateral epicondyle of humerus
I: dorsal surface of the middle and distal phalanges
A: extends phalanges 2 -5

Flexor Digitorum Superficialis

O: Medial epicondyle of humerus
I: 4 tendons into sides of middle phalanges 2-5
A: Flexes the proximal interphalangeal (PIP) joints

Flexor Digitorum Profundus

O: Anterior, medial, proximal ulna
I: 4 tendons into base of distal phalanges
A: Flex. Distal Interphalangeal Joint (dip)