Oi Head, Neck And Trunk Muscles

Front 1

Splenius Cervicis

Back 1

O: SP of T3-T6, I: Posterior tubercles of TP of C1-C2 or C3

Front 2

Splenius capitis

Back 2

O: Caudal ½ of ligamentum nuchae; SP of C7; SP of T1-T3 or T4 I: Mastoid process of temporal bone, & on occipital bone inferior to lateral 1/3 of superior nuchal line

Front 3

Iliocostalis lumborum

Back 3

O:Common origin from anterior surface of broad tendon attached to medial crest of sacrum, spinous processes of lumbar & 11th & 12th thoracic vertebrae, posterior part of medial lip of iliac crest, supraspinous ligament, & lateral crests of sacrum I:By tendons into inferior borders of angles of lower 6-7 ribs

Front 4

Iliocostalis thoracis

Back 4

O:By tendons from upper borders of angles of lower 6 ribs I:Cranial borders of angles of upper 6 ribs, & dorsum of transverse process of C7

Front 5

Iliocostalis cervicis

Back 5

O:Angles of ribs 3-6 I:Posterior tubercles of transverse processes of C-4 through C-6

Front 6

Longissimus thoracis

Back 6

O: In lumbar region, it is blended with ilicostalis lumborum, posterior surfaces of transverse & accessory processes of lumbar vertebrae, & anterior layer of thoracolumbar fascia I: By tendons into tips of transverse processes of all thoracic vertebrae, & by fleshy digitations into lower 9-10 ribs between tubercles & angles

Front 7

Longissimus cervicis

Back 7

O:By tendons from transverse processes of upper 4-5 thoracic vertebrae I: By tendons into posterior tubercles of transverse processes of 2-6 cervical vertebrae

Front 8

Longissimus capitis

Back 8

O: By tendons from transverse processes of upper 4-5 thoracic vertebrae, & articular processes of lower 3-4 cervical vertebrae I: Posterior margin of mastoid process

Front 9

Spinalis thoracis

Back 9

O: SP of L1,2, T11-12 I: SP of T1-8 (variable)

Front 10

Spinalis cervicis

Back 10

O: SP 7, ligamentum nuchae, and SP of T1,2 I: SP of axis, SP C3-4 occasionally

Front 11

Spinalis capitis

Back 11

"O: Blended with semispinalis SP T1-4, C6-7 I: between superior and inferior nuchal lines of occipital bone

Front 12

Semispinalis thoracis

Back 12

O: Transverse process of T6-10 I: SP C6- T4

Front 13

Semispinalis cervicus

Back 13

O: Transverse process of T5,6 I: SP C1-5

Front 14

Semispinalis capitus

Back 14

O: Transverse process of T1-7, C7 articular processes of C4-6 I: Occiptal bone

Front 15

Multifidus

Back 15

O: Sacral region: Posterior surface of sacrum, medial surface of posterior superior iliac spine, & posterior sacroiliac ligaments. Lumbar region, Thoracic region, Cervical region: Transverse processes of L5 through C4 I: Spanning 2-4 vertebrae, inserted into spinous process of vertebra above

Front 16

Rotatores

Back 16

O: Transverse processes of vertebrae I: Lamina of vertebra above

Front 17

Interspinales

Back 17

O: Between SP’s, in pairs I: Between SP’s, in pairs

Front 18

Intertransversarii

Back 18

O: Between TP’s I: Between TP’s

Front 19

Levatores costorum

Back 19

"O: TP of C7 and T1-12 I: Outer surface of rib below between tubercle and angle. Fiber direction - down and out

Front 20

Quadratus lumborum

Back 20

O: Iliac crest and occasionally TP lower 3 or 4 lumbar vertebrae, iliolumbar ligament I: Inferior border of rib 12 and TP of L1-4

Front 21

Rectus Capitis Posterior Major

Back 21

O: Spine of axis I: Inferior nuchal line of occipital bone

Front 22

Rectus Capitis Posterior Minor

Back 22

O: Tubercle on posterior arch of atlas I: Medial inferior nuchal line of occiput

Front 23

Oblique Capitis Superior

Back 23

O: TP of atlas passing upward and backward I: Occipital bone

Front 24

Oblique Capitis Inferior

Back 24

O: Spine apex of axis passing lateral and upward I: TP of atlas (inferior, posterior part)

Front 25

Platysma

Back 25

O:Fascia covering superior parts of pectoralis major and deltoid I: Inferior margin of mandible, skin of lower lip of face and corner of mouth

Front 26

Sternocleidomastoid

Back 26

O: Sternal Head: Manubrium Clavicular Head: Medial 1/3 of clavicle I: Sternal Head:Lateral surface of mastoid process, Clavicular Head: Lateral ½ of superior nuchal line of occipital bone

Front 27

Upper Trapezius

Back 27

O: External occipital protuberance, medial 1/3 of superior nuchal line, ligamentum nuchae, and spinous process of C7 vertebra I: Lateral 1/3 of clavicle and acromion process of scapula

Front 28

Splenius capitis

Back 28

O: Splenius capitis: Caudal ½ of ligamentum nuchae; SP of C7; SP of T1-T3 or T4 I: Mastoid process of temporal bone, & on occipital bone inferior to lateral 1/3 of superior nuchal line

Front 29

Levator scapulae

Back 29

O: Transverse process of cervical vertebrae 1-4 I: Medial border of scapula between superior angle and root of spine

Front 30

Scalene anterior

Back 30

O: Anterior part of TP of C3-6 I: 1st rib

Front 31

Scalene medius

Back 31

O: TP of C2-7 I: 1st rib

Front 32

Scalene posterior

Back 32

O: posterior part of TP of C5-7 I: 2nd rib

Front 33

Omohyoid

Back 33

O: Inferior: Superior border of scapula near notch Superior: intermediate tendon by clavicle I: Inferior: Intermediate tendon by clavicle Superior: Body of hyoid

Front 34

Subclavius

Back 34

O: 1st rib and cartilage I: Undersurface of the clavicle

Front 35

Digastric

Back 35

O: Anterior: Mandible, Posterior: Mastoid process of temporal bone I: Body and cornu of hyoid

Front 36

Stylohoid

Back 36

O: Styloid process I: Body of hyoid

Front 37

Mylohyoid

Back 37

O: Mandible I: Hyoid & median raphe

Front 38

Sternohyoid

Back 38

O: Manubrium sterni, median end of clavicle I: Body of hyoid, inferior border

Front 39

Sternothyroid

Back 39

O: Manubrium sterni, costal cartilage of 1st rib I: Oblique line of thyroid cartilage

Front 40

Thyrohyoid

Back 40

O: Oblique line of thyroid cartilage I: Greater horn of hyoid

Front 41

Scalene anterior

Back 41

O: Anterior part of TP of C3-6 I: 1st rib

Front 42

Stylohoid

Back 42

O: Styloid process I: Body of hyoid

Front 43

Digastric

Back 43

O: Anterior: Mandible, Posterior: Mastoid process of temporal bone I: Body and cornu of hyoid

Front 44

Masseter

Back 44

O: Superficial: Zygomatic process of maxilla, lower border of zygomatic arch I: Superficial: Angle & ramus of mandible

Front 45

Orbicularis oculi

Back 45

O: Nasal part of frontal bone, frontal process of maxilla, anterior surface of medial palpebral ligament I: Muscle fibers surround the circumference of the orbit, spread down on the cheek, and blend with adjacent muscular or ligament structures

Front 46

Frontalis

Back 46

O: Galea aponeurotica I: Muscle and skin of eyebrow and root of nose

Front 47

Nasalis

Back 47

O: Alar portion-Maxilla Transverse portion- Above & lateral to incisive fossa of maxilla I: Ala of nose, By aponeurosis with nasalis on opposite side fossa of maxilla

Front 48

Orbicularis oris

Back 48

O: Numerous strata of muscular fibers surrounding the orifice of the mouth derived in part from other facial muscles I: Into skin and mucous membrane of lips, blending with other muscles

Front 49

Zygomaticus major and minor

Back 49

"O: Major: zygomatic bone in front of temporal process, Minor: Malar surface of zygomatic bone I: Major: angle of mouth, blending with adjacent muscles, Minor: orbicularis oris of upper lip

Front 50

Levator labii superioris

Back 50

O: Lower margin of orbit I: Orbicularis of upper lip

Front 51

Levator anguli oris

Back 51

O: Canine fossa of maxilla I: Angle of mouth blending with orbicularis oris

Front 52

Depressor anguli oris

Back 52

O: Oblique line of mandible I: Angle of mouth blending with adjacent muscles

Front 53

Depressor labii inferioris (with Platysma)

Back 53

O: Oblique line of mandible I: Blend with orbicularis oris

Front 54

Buccinator

Back 54

O: Alveolar processes of maxilla, buccinator ridge of mandible, and pterygomandibular ligament I: Orbicularis oris at angle of mouth

Front 55

Temporalis

Back 55

O: Temporal fossa & fascia I: Coronoid process of mandible & anterior border of ramus of mandible

Front 56

Lateral Pterygoid

Back 56

O: Superior head: Lateral surface of great wing of sphenoid & infratemporal crest, Inferior head: Lateral surface of lateral pterygoid plate I: Depression, anterior part of condyle of mandible, anterior margin of articular disk of temporomandibular articulation

Front 57

Medial Pterygoid

Back 57

O: Medial surface of lateral pterygoid plate, pyramidal process of palatine bone, & tuberosity of maxilla I: Inferior & posterior part of medial surface of ramus & angle of mandibular foramen

Front 58

Longus Capitis

Back 58

O: TP C3-6 I: Occiput

Front 59

Longus colli

Back 59

O: & I: TP C3-5 to C1 ant arch. Bodies of T1, 2, 3 to TP’s C5,6. Bodies of C5-7, T1-3 to bodies of C2-4.

Front 60

Rectus Capitis anterior

Back 60

O: Root of the TP, Anterior surface of atlas I: Inferior surface of the occipital bone

Front 61

Rectus Capitis lateralis

Back 61

O: Superior part of TP of atlas I: Jugular process of occipital bone

Front 62

Stylohoid

Back 62

O: Styloid process I: Body of hyoid

Front 63

Scalene anterior

Back 63

O: Anterior part of TP of C3-6 I: 1st rib

Front 64

Scalene medius

Back 64

O: TP of C2-7 I: 1st rib

Front 65

Scalene posterior

Back 65

O: posterior part of TP of C5-7 I: 2nd rib

Front 66

External Oblique

Back 66

"O: Anterior: External surface of ribs 5-8 interdigitating with serratus anterior. Lateral: External surface of 9th rib interdigitating with serratus anterior & external surface of 10 &12th ribs, interdigitating with latissimus dorsi I: Anterior: Into a broad, flat aponeurosis, terminating in the LINEA ALBA, Direction - obliquely downward and medially with uppermost fibers more medial (hands in your pockets). Lateral: As the inguinal ligament, into anterior superior spine and pubic tubercule and into the external lip of anterior ½ of iliac crest. Direction ~ obliquely down & medially, more down than the anterior fibers

Front 67

Internal Oblique

Back 67

O: Lower: Lateral 2/3 of inguinal ligament, a short attachment on iliac crest near anterior superior iliac spine. Upper: Anterior 1/3 of intermediate line of iliac crest. Lateral: Middle 1/3 of intermediate line of iliac crest and thoracolumbar fascia I: Lower: With transversus abdominis into crest of pubis, medial part of pectineal line & into linea alba by means of an aponeurosis. Direction - transversely across. Upper: Linea alba by means of aponeurosis. Direction - medial and upward. Lateral: Inferior borders of 10-12th ribs and linea alba via aponeurosis. Direction - up and medial

Front 68

Rectus Abdominus

Back 68

O: Pubic crest and symphysis I: Costal cartilages of 5-7 ribs and xiphoid process of sternum

Front 69

Transverse abdominal (transverses abdominis)

Back 69

O: Inner surface of cartilages of lower 6 ribs, interdigitating with the diaphragm, thoracolumbar fascia, anterior ¾ of internal lip of iliac crest, and lateral 1/3 of inguinal ligament I: Linea alba via a broad aponeurosis, pubic crest and pecten pubis

Front 70

Pyramidalis

Back 70

O: By tendinous fibers from pubis and ligaments from front of symphysis I: Linea alba midway between umbilicus and pubis

Front 71

Cremasteric m.

Back 71

O: Inguinal ligament (lateral) and pubic tubercle and pubic crest (medial) I: Continuous loop from the middle of inguinal ligament as far as the tunica vaginalis and then returning to pubic tubercle