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 humerus

INSERTION: `base of 2nd metacarpal


Extensor carpi radialis brevis

ORIGIN: lateral epicondyle of humerus

INSERTION: base of 3rd metacarpal


Extensor carpi ulnaris

ORIGIN: lateral epicondyle of humerus

INSERTION: base of 5th metacarpal


Rectus abdominis

ORIGIN: crest of the pubis

INSERTION: 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 fascia

INSERTION: 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 fascia

INSERTION: 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 vertebrae

INSERTION: lesser trochanter of the femur


Sartorius

ORIGIN: notch between the anterior-superior and anterior-inferior spines of the ilium

INSERTION: anterior medial condyle of the tibia


Rectus femoris

ORIGIN: anterior-inferior iliac spine of the ilium

INSERTION: tibial tuberosity via the patella and patellar ligament


Tensor fasciae latae

ORIGIN: anterior iliac crest of the ilium

INSERTION: iliotibial band of fascia quarter of the way down


Pectineus

ORIGIN: space 1-inch wide on front of pubis just above the crest

INSERTION: 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 longus

INSERTION: lesser trochanter of upper quarter of the linea aspera


Adductor longus

ORIGIN: front of the pubis just below its crest

INSERTION: 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 ischium

INSERTION: whole length of the linea aspera and inner condyloid ridge


Gracilis

ORIGIN: inner edge of the descending ramus of the pubis

INSERTION: 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 area

INSERTION: gluteal line of femur and iliotibial band of fascia latae


Gluteus medius

ORIGIN: outer surface of the ilium just below the crest

INSERTION: 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 medius

INSERTION: anterior surface of the greater trochanter of the femur


Piriformis`

ORIGIN: anterior surface of sacrum

INSERTION: greater trochanter of femur


Gemellus superior

ORIGIN: posterior ischium (ischial spine)

INSERTION: greater trochanter of the femur


Gemellus inferior

ORIGIN: ischial tuberosity

INSERTION: greater trochanter of femur


Obturator internus

ORIGIN: obturator foramen

INSERTION: greater trochanter of femur


Obturator externus

ORIGIN: obturator foramen

INSERTION: greater trochanter of femur


Quadratus femoris

ORIGIN: ischial tuberosity

INSERTION: just below greater trochanter of femur


Rectus femoris

ORIGIN: anterior-inferior iliac spine of the ilium

INSERTION: tibial tuberosity via the patella and patellar ligament


Vastus intermedius

ORIGIN: upper two-thirds of the anterior surface of femur

INSERTION: tibial tuberosity via the patella and patellar ligament


Vastus lateralis

ORIGIN: greater trochanter and lateral lip of the linea aspera

INSERTION: tibial tuberosity via the patella and patellar ligament


Vastus medialis

ORIGIN: whole length of the linea aspera

INSERTION: tibial tuberosity via the patella and patellar ligament


Sartorius

ORIGIN: notch between the anterior-superior and anterior-inferior spines of the ilium

INSERTION: anterior medial condyle of the tibia


Biceps femoris

ORIGINS: Long head: ischial tuberosity

Short head: lateral lip of linea aspera

INSERTIONS: Long head: lateral condyle of tibia


Semitendinosus

ORIGIN: ischial tuberosity

INSERTION: medial condyle of tibia


Semimembranosus

ORIGIN: ischial tuberosity

INSERTION: medial condyle of tibia


Gastrocnemius

ORIGIN: medial and lateral condyles of the femur

INSERTION: calcaneus via the calcaneus tendon (Achilles tendon)


Popliteus

ORIGIN: posterior surface of lateral epicondyle of femur

INSERTION: upper, posterior medial surface of tibia


Gracilis

ORIGIN: inner edge of the descending ramus of the pubis

INSERTION: anterior medial surface of the tibia below the condyle


Anterior tibialis

ORIGIN: upper two-thirds of the lateral surface of tibia and interosseous membrane

INSERTION: 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 membrane

INSERTION: middle and distal phalanges of the lateral four toes


Extensor hallucis longus

ORIGIN: middle half of the medial fibula and adjoining interosseous membrane

INSERTION: distal phalanx of the great toe (“hallucis” refers to the great toe)


Gastrocnemius

ORIGIN: medial and lateral condyles of the femur

INSERTION: calcaneus via the calcaneus tendon (Achilles tendon)


Soleus

ORIGIN: upper two-thirds of the posterior surfaces of the tibia and fibula

INSERTION: 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 fibula

INSERTION: 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 tibia

INSERTION: 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 fibula

INSERTION: plantar surface of the base of the terminal phalange of the great toe


Plantaris

ORIGIN: posterior surface of the lateral epicondyle of the femur

INSERTION: tuberosity of the calcaneus via the Achilles tendon


Peroneus longus

ORIGIN: upper two-thirds of lateral surface of tibia and fibula

INSERTION: ventral surfaces of the 1st metatarsal and medial cuneiform


Peroneus brevis

ORIGIN: distal two-thirds of the fibula

INSERTION: tuberosity of the 5th metatarsal