Anatomy Of Muscles

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Trapezius
Origin: Base of skull, occipital protuberance; Ligaments of neck; Spines of 7 cervical and upper 3 thoracic vertebrae; Spines of 4-12 thoracic vertebrae.Insertion: Posterior aspect of outer third clavicle; Border of the acromion process; Upper border of the scapular spine; Triangular space at the base of the spine.

Rhomboid major
Origin: Spinous process of the 2-5 thoracic vertebrae.Insertion: Medial border of the scapula, below the spine of scapula.

Rhomboid minor
Origin: Spinous process 7th cervical and 1st thoracic vertebrae. Insertion: Medial border of the scapula, below the spine of scapula.

Levator Scapula
Origin: Transverse process of the upper 4 cervical vertebrae.Insertion: Medial border of the scapula above the spine of the scapular spine.

Pectoralis Minor
Origin: Outer surfaces of the 3-5 ribs.Insertion: Coracoid process.

Serratus anterior
Origin: Lateral portion of the upper 9 ribsInsertion: Whole medial border of the costal aspect of the scapula.

Supraspinatus
Origin: Supraspiantus fossa.Insertion: Top of the greater tubercle of the humerus.

Infraspinatus
Origin: Posterior surface of the scapula below the scapular spine.Insertion: Greater tubercle of the humerus on the posterior side.

Teres minor
Origin: Posterior, lateral surface of the scapula.Insertion: Greater tubercle of the humerus on the posterior side.

Subscapularis
Origin: Entire anterior surface of the scapular fossa.Insertion: Lesser tubercle of the humerus.

Deltoid
Origin: Front outer third of clavicle, border of the acromion, and lower edge of the spine of the scapula.

Teres major
Origin: Lower third of the lateral border of the scapula.Insertion: Inner lip of the intertubercular groove of the humerus.

Coracobrachialis
Origin: coracoid process of the scapula.Insertion: medial, middle of humerus.

Latissimus dorsi
Origin: Posterior crest of the ilium, back of the sacrum and spinous process of the lower 3 ribs.Insertion: Medial side of the intertubercular groove of the humerus.

Pectoralis major
Origin: Inner half of the anterior surface of the clavicle, anterior surface of the costal cartilages of the first 6 ribs and adjoining.Insertion: Outer lip of the intertubercular groove of the humerus.

Biceps brachii
Origin: Long head: Top of the glenoid fossa.Short head: Top of the coracoid process.Insertion: Tuberosity of the radius.

Brachialis
Origin: Lower half of the anterior portion of the humerus.Insertion: coronoid process of the ulna.

Brachioradialis
Origin: Lower two thirds of outer condyloid ridge of the humerus.Insertion: outer surface of the lower end of the radius at the styloid process.

Triceps brachii
Origin: Long head: Lower edge of the glenoid process of the scapula.Lateral head: Upper half of the posterior surface of the humerus.Medial head: Lower two thirds of the posterior surface of the humerus.Insertion: Olecranon process of the ulna.

Palmaris longus
Origin: Medial epicondyle of humerus.Insertion: Palmar aponeurosis.

Flexor Carpi radialis
Origin: Medial epicondyle of humerus.Insertion: Bases of 2nd and 3rd metacarpals.

Flexor Carpi ulnaris
Origin: Medial epicondyle of humerus.Insertion: Bases of 5th metacarpals.

Pronator teres
Origin: Medial epicondyle of humerus and coronoid process of ulna.Insertion: mid-lateral surface of the radius.

Pronator quadratus
Origin: Anterior distal radius.Insertion: Anterior distal ulna.

Extensor carpi radialis longus
ORIGIN: lateral epicondyle of humerusINSERTION: `base of 2nd metacarpal

Extensor carpi radialis brevis
ORIGIN: lateral epicondyle of humerusINSERTION: base of 3rd metacarpal

Extensor carpi ulnaris
ORIGIN: lateral epicondyle of humerusINSERTION: base of 5th metacarpal

Rectus abdominis
ORIGIN: crest of the pubisINSERTION: cartilage of the 5th, 6th, and 7th ribs and the xiphoid process

External obliques
ORIGIN: borders of the lower 8 ribs at the side of the chest interdigitating with

Internal obliques
ORIGIN: upper half of the inguinal ligament, anterior two-thirds of the crest of the ilium and the thoracolumbar fasciaINSERTION: costal cartilages of the 8th, 9th, and 10th ribs and the linea alba

Transversus abdominis
ORIGIN: outer third of the inguinal ligament, inner rim of the crest of the ilium, inner surface of the cartilage of the lower 6 ribs, and the thoracolumbar fasciaINSERTION: crest of the pubis, the iliopectineal line, and the linea alba

Erector spinae
ORIGINS & INSERTIONS: in general, these muscles attach the spinous and transverse processes of the vertebrae to each other and to the pelvis, ribs, and skull

Iliopsoas
ORIGIN: inner surface of ilium, base of the sacrum, and sides of the bodies of the last thoracic and all of the lumbar vertebraeINSERTION: lesser trochanter of the femur

Sartorius
ORIGIN: notch between the anterior-superior and anterior-inferior spines of the iliumINSERTION: anterior medial condyle of the tibia

Rectus femoris
ORIGIN: anterior-inferior iliac spine of the iliumINSERTION: tibial tuberosity via the patella and patellar ligament

Tensor fasciae latae
ORIGIN: anterior iliac crest of the iliumINSERTION: iliotibial band of fascia quarter of the way down

Pectineus
ORIGIN: space 1-inch wide on front of pubis just above the crestINSERTION: rough line leading from the lesser trochanter down to the linea aspera

Adductor brevis
ORIGIN: front of the pubis just below the origin of the longusINSERTION: lesser trochanter of upper quarter of the linea aspera

Adductor longus
ORIGIN: front of the pubis just below its crestINSERTION: middle third of the linea aspera

Adductor magnus
ORIGIN: edge of the entire ramus of the pubis and the ischium, and the tuberosity of the ischiumINSERTION: whole length of the linea aspera and inner condyloid ridge

Gracilis
ORIGIN: inner edge of the descending ramus of the pubisINSERTION: anterior medial surface of the tibia below the condyle

Gluteus maximus
ORIGIN: posterior quarter of the crest of the ilium, posterior surface of the sacrum near the ilium, and fascia of the lumbar areaINSERTION: gluteal line of femur and iliotibial band of fascia latae

Gluteus medius
ORIGIN: outer surface of the ilium just below the crestINSERTION: posterior and middle surfaces of the greater trochanter of the femur

Gluteus minimus
ORIGIN: outer surface of the ilium below the origin of the gluteus mediusINSERTION: anterior surface of the greater trochanter of the femur

Piriformis`
ORIGIN: anterior surface of sacrumINSERTION: greater trochanter of femur

Gemellus superior
ORIGIN: posterior ischium (ischial spine)INSERTION: greater trochanter of the femur

Gemellus inferior
ORIGIN: ischial tuberosityINSERTION: greater trochanter of femur

Obturator internus
ORIGIN: obturator foramenINSERTION: greater trochanter of femur

Obturator externus
ORIGIN: obturator foramenINSERTION: greater trochanter of femur

Quadratus femoris
ORIGIN: ischial tuberosityINSERTION: just below greater trochanter of femur

Rectus femoris
ORIGIN: anterior-inferior iliac spine of the iliumINSERTION: tibial tuberosity via the patella and patellar ligament

Vastus intermedius
ORIGIN: upper two-thirds of the anterior surface of femurINSERTION: tibial tuberosity via the patella and patellar ligament

Vastus lateralis
ORIGIN: greater trochanter and lateral lip of the linea asperaINSERTION: tibial tuberosity via the patella and patellar ligament

Vastus medialis
ORIGIN: whole length of the linea asperaINSERTION: tibial tuberosity via the patella and patellar ligament

Sartorius
ORIGIN: notch between the anterior-superior and anterior-inferior spines of the iliumINSERTION: anterior medial condyle of the tibia

Biceps femoris
ORIGINS: Long head: ischial tuberosity Short head: lateral lip of linea asperaINSERTIONS: Long head: lateral condyle of tibia

Semitendinosus
ORIGIN: ischial tuberosityINSERTION: medial condyle of tibia

Semimembranosus
ORIGIN: ischial tuberosityINSERTION: medial condyle of tibia

Gastrocnemius
ORIGIN: medial and lateral condyles of the femurINSERTION: calcaneus via the calcaneus tendon (Achilles tendon)

Popliteus
ORIGIN: posterior surface of lateral epicondyle of femurINSERTION: upper, posterior medial surface of tibia

Gracilis
ORIGIN: inner edge of the descending ramus of the pubisINSERTION: anterior medial surface of the tibia below the condyle

Anterior tibialis
ORIGIN: upper two-thirds of the lateral surface of tibia and interosseous membraneINSERTION: inner surface of medial cuneiform and the 1st metatarsal

Extensor digitorum longus
ORIGIN: lateral condyle of the tibia, proximal three-fourths of the fibula, and the interosseous membraneINSERTION: middle and distal phalanges of the lateral four toes

Extensor hallucis longus
ORIGIN: middle half of the medial fibula and adjoining interosseous membraneINSERTION: distal phalanx of the great toe (“hallucis” refers to the great toe)

Gastrocnemius
ORIGIN: medial and lateral condyles of the femurINSERTION: calcaneus via the calcaneus tendon (Achilles tendon)

Soleus
ORIGIN: upper two-thirds of the posterior surfaces of the tibia and fibulaINSERTION: calcaneus via the calcaneus tendon (Achilles tendon)

Tibialis posterior
ORIGIN: posterior surface of the upper half of the interosseous membrane and the adjacent surfaces of the tibia and fibulaINSERTION: lower medial surfaces of the navicular and cuneiform bones, and bases of the 2 through 5 metatarsal bones

Flexor digitorum longus
ORIGIN: posterior surface of middle one-third of tibiaINSERTION: plantar surface of the base of the 3rd phalange of the 2nd through 5th toes

Flexor hallucis longus
ORIGIN: posterior surface of lower 2/3 of fibulaINSERTION: plantar surface of the base of the terminal phalange of the great toe

Plantaris
ORIGIN: posterior surface of the lateral epicondyle of the femurINSERTION: tuberosity of the calcaneus via the Achilles tendon

Peroneus longus
ORIGIN: upper two-thirds of lateral surface of tibia and fibulaINSERTION: ventral surfaces of the 1st metatarsal and medial cuneiform

Peroneus brevis
ORIGIN: distal two-thirds of the fibulaINSERTION: tuberosity of the 5th metatarsal