Muscle Attachments Shoulder and Arm
Bones and Bony Landmarks
- Acromioclavicular Joint (AC)
- Clavicle
- Coracoid Process
- Deltoid Tuberosity
- Greater Tubercle
- Inferior Angle
- Infraglenoid Tubercle
- Lateral Border
- Lesser Tubercle
- Medial Border
- Spine Of The Scapula
- Sternoclavicular Joint (SC)
- Subscapular Fossa
- Superior Angle
- Supraspinous Fossa
Muscles
- Biceps Brachii
- Coracobrachialis
- Deltoid
- Latissimus Dorsi
- Levator Scapula
- Pectoralis Major
- Pectoralis Minor
- Rhomboid Major
- Rhomboid Minor
- Rotator Cuff Muscles:
- Serratus Anterior
- Subclavius
- Teres Major
- Trapezius
- Triceps Brachii
Origin | Short Head: Coracoid Process Of Scapula Long Head: Supraglenoid Tubercle Of Scapula |
Insertion | Tuberosity Of The Radius And Aponeurosis Of The Biceps Brachii |
Actions | Flex The Elbow, Supinate The Forearm, Flex The Shoulder Joint |
Origin | Coracoid Process Of Scapula |
Insertion | Medial Surface Of Middle Shaft Of Humerus |
Actions | Flex, Adduct The Should Joint |
Origin | Lateral One Third Of Clavicle, Acromion And Spine Of Scapula |
Insertion | Deltoid Tuberosity |
Actions | All Fibers: Abduct The Shoulder Joint Posterior: Extend And Laterally Rotate The Shoulder Joint Anterior: Flex And Medially Rotate The Shoulder Joint |
Latissimus Dorsi
Origin | Spinous Processes Of Last Six Thoracic Vertebrae, Last three or four ribs, Thoracolumbar Aponeurosis, and Posterior Iliac Crest |
Insertion | Crest Of The Lesser Tubercle Of The Humerus |
Actions | Extend, Adduct, Medially Rotate The Shoulder Joint |
Levator Scapula
Origin | Transverse Processes Of 1st Thru 4th Cervical Vertebrae |
Insertion | Medial Border And Superior Angle Of Scapula |
Actions | Unilateral: Elevate, Downwardly Rotate The Scapula, Laterally Flex Head And Neck Bilateral: Extend Head And Neck |
Pectoralis Major
Origin | Medial Half Of Clavicle, Sternum, Cartilage Of Ribs One Thru Six |
Insertion | Crest Of Greater Tubercle Of Humerus |
Actions | As A Whole: Adduct, Medially Rotate The Shoulder Joint, May Assist In Elevating The thorax in forced inspiration Upper Fibers: Flex, Medially Rotate, Horizontally Adduct The Shoulder Joint Lower Fibers: Extend, Adduct The Shoulder Joint |
Pectoralis Minor
Origin | Third, Fourth And Fifth Ribs |
Insertion | Coracoid Process Of Scapula |
Actions | Depress, Abduct, Tilt The Scapula Anteriorly, Assist In Forced Inspiration |
Rhomboid Major
Origin | Spinous Processes Of T-2 To T-5 |
Insertion | Medial Border Of The Scapula Between Spine And Inferior Angle |
Actions | Adduct, Elevate, Downwardly Rotate The Scapula |
Origin | Spinous Processes Of C-7 And T-1 |
Insertion | Medial Border Of The Scapula Between Spine And Inferior Angle |
Actions | Adduct, Elevate, Downwardly Rotate The Scapula |
Origin | Supraspinous Fossa Of Scapula |
Insertion | Greater Tubercle Of Humerus |
Actions | Adduct Humerus, Stabilize Head Of Humerus In Glenoid Cavity |
Origin | Infraspinous Fossa Of Scapula |
Insertion | Greater Tubercle Of Humerus |
Actions | Laterally Rotate, Adduct, Extend The Shoulder Joint, Stabilize Head of Humerus in Glenoid Cavity |
Origin | Subscapular Fossa Of The Scapula |
Insertion | Lesser Tubercle Of The Humerus |
Actions | Medially Rotate The Shoulder Joint, Stabilize Head of Humerus in Glenoid Cavity |
Origin | Superior Half Of Lateral Border Of Scapula |
Insertion | Greater Tubercle Of Humerus |
Actions | Laterally Rotate, Adduct, Extend Shoulder Joint, Stabilize Head of Humerus in Glenoid Cavity |
Serratus Anterior
Origin | Surfaces Of Upper 8 Or 9 Ribs |
Insertion | Anterior Surface Of Medial Border Of Scapula |
Actions | With Origin Fixed: Abduct The Scapula, Hold Medial Border Of Scapula Against Rib Cage Scapula Stabilized: May Act In Forced Inspiration |
Subclavius
Origin | First Rib And Cartilage |
Insertion | Inferior, Lateral Aspect Of The Clavicle |
Actions | Draws Clavicle Down And Forward, Elevates 1st Rib, Stabilizes The Sternoclavicular Joint |
Teres Major
Origin | Dorsal Surfaces Of Inferior Angle And Lower Half Of Lateral Border of Scapula |
Insertion | Crest Of The Lesser Tubercle Of The Humerus |
Actions | Extend, Adduct, Medially Rotate The Humerus |
Origin | External Occipital Protuberance, Medial Portion Of Superior Nuchal Line of Occiput, Ligamentum Nuchae and Spinous Processes of C-7 Through T-12 |
Insertion | Lateral Portion Of Clavicle, Acromion And Spine Of Scapula |
Actions | Upper:
Middle: Adduct, Stabilize The Scapula Lower: Depress, Upwardly Rotate The Scapula |
Triceps Brachii
Origin | Long Head: Infraglenoid Tubercle Of Scapula Lateral Head: Posterior Surface Of Proximal Half Of Humerus Medial Head: Posterior Surface Of Distal Half Of Humerus |
Insertion | Olecranon Process Of Ulna |
Actions | All Heads: Extend The Elbow Long Head: Extend, Adduct The Shoulder Joint |
Muscle Attachments Pelvis and Thigh
Bones and Bony Landmarks
- Anterior Inferior Iliac Spine
- Anterior Superior Iliac Spine
- Coccyx
- Gluteal Tuberosity
- Greater Trochanter
- Iliac Crest
- Iliac Fossa
- Inferior Ramus Of The Pubis
- Ischial Tuberosity
- Posterior Superior Iliac Spine
- Pubic Crest And Tubercles
- Ramus Of The Ischium
- Sacroiliac (SI) Joint
- Sacrum
- Superior Ramus Of The Pubis
Muscles
- Adductor Group
- Gluteals
- Hamstrings
- Iliopsoas
- Lateral Rotators Of The Hip
- Piriformis
- Quadratus Femoris
- Obdurator Internus
- Obdurator Externus
- Gemellus Inferior
- Gemellus Superior
- Quadriceps Femoris Group
- Sartorius
- Tensor Fascia Latae
- Iliotibial Tract
Origin | Inferior Ramus Of The Pubis, Ramus Of Ischium, Ischial Tuberosity |
Insertion | Linea Aspera And Adductor Tubercle |
Actions | Adduct Hip, Medially Rotate Hip, Assist Hip Flexion Posterior Fibers Also Extend The Hip |
Adductor Longus
Origin | Pubic Tubercle |
Insertion | Medial Lip Of Linea Aspera |
Actions | Adduct Hip, Medially Rotate Hip, Assist Hip Flexion |
Origin | Inferior Ramus Of Pubix |
Insertion | Pectineal Line And Medial Lip Of Linea Aspera |
Actions | Adduct Hip, Medially Rotate Hip, Assist Hip Flexion |
Pectineus
Origin | Superior Ramus Of Pubis |
Insertion | Pectineal Line Of Femur |
Actions | Adduct Hip, Medially Rotate Hip, Assist Hip Flexion |
Gracilis
Origin | Inferior Ramus Of Pubis And Ramus Of Ischium |
Insertion | Proximal, Medial Shaft Of Tibia At Pes Anserius Tendon |
Actions | Adduct Hip, Medially Rotate Hip, Assist Hip Flexion Also Flexes And Medially Rotates The Knee |
Gluteus Maximus
Origin | Coccyx, Posterior Sacrum, Posterior Iliac Crest, Sacrotuberus And Sacroiliac Ligaments |
Insertion | Gluteal Tuberosity (Upper Fibers), Iliotibial Tract (Lower Fibers) |
Actions | Extends, Laterally Rotates, And Abducts The Hip; Lower Fibers, Adduct the Hip |
Origin | External Surface Of The Ilium Between The Iliac Crest And Posterior And Anterior Gluteal Lines |
Insertion | Greater Trochanter |
Actions | Abducts, Flexes, Extends And Laterally And Medially, Rotates Hip |
Gluteus Minimus
Origin | External Surface Of The Ilium Between Anterior And Inferior Gluteal Lines |
Insertion | Anterior Border Of Greater Trochanter |
Actions | Abducts, Flexes, And Medially Rotates Hip |
Biceps Femoris
Origin | Long Head: Ischial Tuberosity Short Head: Lateral Lip Of Linea Aspera |
Insertion | Head Of The Fibula |
Actions | Flex Knee, Extend Hip, Tilt Pelvis Posteriorly, Also Laterally Rotate Hip And Flexed Knee |
Semitendinosus
Origin | Ischial Tuberosity |
Insertion | Proximal, Medial Shaft Of The Tibia |
Actions | Flex Knee, Extend Hip, Tilt Pelvis Posteriorly, Also Medially Rotate Hip And Flexed Knee |
Semimembranosus
Origin | Ischial Tuberosity |
Insertion | Posterior Aspect Of medial Condyle Of Tibia |
Actions | Flex Knee, Extend Hip, Tilt Pelvis Posteriorly, Also Medially Rotate Hip And Flexed Knee |
Psoas Major
Origin | Bodies And Transverse Processes Of Lumbar Vertebrae |
Insertion | Lesser Trochanter Of Femur |
Actions | Flexes, Adducts And Laterally Rotates Hip |
Iliacus
Origin | Iliac Fossa |
Insertion | Lesser Trochanter Of Femur |
Actions | Flexes, Adducts And Laterally Rotates Hip |
Piriformis
Origin | Anterior Surface Of Sacrum |
Insertion | Greater Trochanter |
Actions | Laterally Rotate Hip, Abduct Thigh When Hip Is Flexed |
Quadratus Femoris
Origin | Lateral Border Of Ischial Tuberosity |
Insertion | Posterior Surface Of Femur Between Greater And Lesser Trochanter |
Actions | Laterally Rotates Hip |
Obdurator Internus
Origin | Obdurator Membrane And Pelvic Surface |
Insertion | Medial Surface Of Greater Trochanter |
Actions | Laterally Rotates Hip |
Obdurator Externus
Origin | Superior And Inferior Rami Of Pubis |
Insertion | Trochanteric Fossa Of Femur |
Actions | Laterally Rotates Hip |
Gemellus Inferior
Origin | Ischial Tuberosity |
Insertion | Upper Border Of Greater Trochanter |
Actions | Laterally Rotates Hip |
Origin | Spine Of The Ischium |
Insertion | Upper Border Of Greater Trochanter |
Actions | Laterally Rotates Hip |
Rectus Femoris
Origin | Anterior Inferior Iliac Spine (AIIS) |
Insertion | Tibial Tuberosity |
Actions | Extend Knee, Flex Hip |
Vastus Medialis
Origin | Medial Lip Of Linea Aspera |
Insertion | Tibial Tuberosity |
Actions | Extend Knee |
Vastus Lateralis
Origin | Lateral Lip Of Linea Aspera, Gluteal Tuberosity |
Insertion | Tibial Tuberosity |
Actions | Extend Knee |
Origin | Anterior And Lateral Shaft Of Femur |
Insertion | Tibial Tuberosity |
Actions | Extend Knee |
Sartorius
Origin | Anterior Superior Iliac Spine (ASIS) |
Insertion | Proximal, Medial Shaft Of Tibia |
Actions | Flex, Abduct And Laterally Rotate Hip, Flex Knee, Medially Rotate Flexed Knee |
Tensor Fascia Latae
Origin | Iliac Crest, Posterior To ASIS |
Insertion | Iliotibial Tract |
Actions | Flex, Abduct And Medially Rotate Hip |
Iliotibial Tract
This is a superficial sheet of fascia along the lateral thigh, extending from the gluteal fascia, down to the tibial tubercle at the knee. It is wide and dense in the upper thigh but narrows to a funnel shape above the knee.
http://www.uggen.net/mike/writing/muscle/pelvis.htm
Muscle Attachments - Leg and Foot
Of the Knee
- Femur
- Fibula
- Patella
- Tibia
Of the Ankle and Foot
- Calcaneus
- Fibula
- Tibia
- Hallucis
- Metatarsals
- Phalanges
- Sesamoid Bones
- Talus
- Tarsals
Of the Knee
- Adductor Tubercle
- Edges Of Femoral Condyles
- Epicondyles Of Femur
- Head Of Fibula
- Pes Anserinus Attachment
- Shaft Of Tibia
- Tibial Plateaus
- Tibial Tuberosity
Of the Ankle and Foot
- Sustenaculum Tali
- Peroneal Tubercle
- Lateral And Medial Malleoli
- Malleolar Grooves
- Head Of Talus
- Trochlea Of Talus
- Medial Tubercle Of Talus
- Cuboid
- Cuneiforms
- Navicular
Muscles
- Muscles Of The Lower Leg
- Extensors Of Ankles And Toes
- Flexors Of Ankles And Toes
- Muscles Of The Foot
Gastrocnemius
Origin | Posterior Condyles Of Femur |
Insertion | Calcaneus Via Calcaneal Tendon |
Actions | Flex Knee, Plantar Flex Ankle |
Peroneus Longus
Origin | Proximal Two-Thirds Of Lateral Fibula |
Insertion | Base Of First Metatarsal And Medial Cuneiform |
Actions | Everts Foot, Assists In Plantar Flexion Of Ankle |
Peroneus Brevis
Origin | Distal Two-Thirds Of Lateral Fibula |
Insertion | Tuberosity Of Fifth Metatarsal |
Actions | Everts Foot, Assists In Plantar Flexion Of Ankle |
Plantaris
Origin | Lateral Epicondyle Of Femur |
Insertion | Calcaneus Via Calcaneal Tendon |
Actions | Weak Plantar Flexion Of Ankle |
Popliteus
Origin | Lateral Condyle Of Femur |
Insertion | Proximal, Posterior Aspect Of Tibia |
Actions | Medially Rotates Flexed Knee, Flexes Knee |
Soleus
Origin | Soleal Line And Posterior Surface Of Tibia, Proximal, Posterior Surface Of Fibula |
Insertion | Calcaneus Via Calcaneal Tendon |
Actions | Plantar Flex Ankle |
Origin | Lateral Condyle And Proximal Lateral Surface Of Tibia, Interosseous Membrane |
Insertion | Medial Cuneiform, Base Of First Metatarsal |
Actions | Inverts Foot, Dorsiflexes Ankle |
Extensor Digitorum Longus
Origin | Lateral Condyle Of Tibia, Proximal Anterior Shaft Of Fibula, Interosseous Membrane |
Insertion | Middle And Distal Phalanges Of Second Through Fifth Toes |
Actions | Extends Second Through Fifth Toes, Dorsiflexes Ankle, Everts Foot |
Extensor Hallicis Longus
Origin | Middle Anterior Surface Of Fibula, Interosseous Membrane |
Insertion | Distal Phalanges Of First Toe |
Actions | Extends First Toe, Dorsiflexes Ankle, Inverts Foot |
Tibialis Posterior
Origin | Proximal Posterior Shaft Of Tibia, Proximal Fibula, Interosseous Membrane |
Insertion | Navicular, Cuneiform, Cuboid, Bases Of Second Through Fourth Metatarsals |
Actions | Inverts Foot, Plantar Flexes Ankle |
Origin | Middle Posterior Surface Of Tibia |
Insertion | Distal Phalanges Of Second Through Fifth Toes |
Actions | Flexes Second Through Fifth Toes, Inverts Foot, Weak Plantar Flexion Of Ankle |
Flexor Hallicis Longus
Origin | Middle Half Of Posterior Fibula |
Insertion | Distal Phalanx Of First Toe |
Actions | Flexes First Toe, Inverts Foot, Weak Plantar Flexion Of Ankle |
Extensor Digitorum Brevis
Origin | Dorsal Surface Of Calcaneus |
Insertion | Second Through Fourth Toes Via Extensor Digitorum Longus Tendon |
Actions | Extends Second Through Fourth Toes |
Flexor Digitorum Brevis
Origin | Plantar Surface Of Calcaneus |
Insertion | Middle Phalanges Of Second Through Fourth Toes |
Actions | Flexes Middle Phalanges Of Second Through Fourth Toes |
Origin | Plantar Surface Of Calcaneus |
Insertion | Proximal Phalange On First Toe, Medial Side, Medial Sesamoid Bone |
Actions | Abducts First Toe, Assists In Flexion Of First Toe |
Abductor Digiti Minimi
Origin | Plantar Surface Of Calcaneus |
Insertion | Proximal Phalange Of Fifth Toe |
Actions | Flexes Fifth Toe, Assists In Abduction Of Fifth Toe |
Muscle Attachments Spine and Thorax
Bones and Bony Landmarks
- Cervicals - Lamina Groove
- Cervicals - Spinous Processes
- Cervicals - Transverse Processes
- Ribs And Costal Cartilage
- Thoracic And Lumbar: Lamina Groove
- Thoracic And Lumbar: TVPS
- Sternum
- Vertebrae - Spinous Processes
Muscles
- Diaphragm
- Erector Spinae Group
- External Obliques
- Internal Obliques
- Intercostals
- Suboccipitals
- Transverse Abdominus
- Transversospinalis Groups
Diaphragm
Origin | Costal attachment: Inner surface of lower six ribs Lumbar attachment: Upper two or three lumbar vertebrae |
Insertion | Central Tendon |
Actions | Draws down the central tendon of diaphragm and increases thoracic cavity volume |
Spinalis
Origin | Spinous Process Of The Upper Lumbar And Lower Thoracic Vertebrae, Ligamentum Nuchae, and Spinous Process of C-7 |
Insertion | Spinous Processes Of Upper Thoracic And Cervicals Except C-1 |
Actions | Bilateral: Extend Vertebral Column Unilateral: Laterally Flex Vertebral Column To Same Side |
Longissimus
Origin | Common Tendon (Tla), Transverse Processes Of Upper Five Thoracic Vertebrae |
Insertion | Lower 9 Ribs, TVPs Of Thoracic And Cervical Vertebrae, Mastoid Process of Temporal Bone |
Actions | Bilateral: Extend Vertebral Column Unilateral: Laterally Flex Vertebral Column To Same Side |
Origin | Common Tendon (Tla), Posterior Surface Of Ribs 1-12 |
Insertion | Posterior Surface Of Ribs 1-12 |
Actions | Bilateral: Extend Vertebral Column Unilateral: Laterally Flex Vertebral Column To Same Side |
External Obliques
Origin | Lower eight ribs |
Insertion | Anterior part of iliac crest, abdominal aponeurosis to linea alba |
Actions | Bilateral: flexes vertebral column and compresses abdominal contents Unilateral flexes vertebral column to same side, rotates vertebral column to opposite side |
Internal Obliques
Origin | Lateral inguinal ligament, iliac crest, thoracolumbar fascia |
Insertion | Cartilage of bottom three ribs, abdominal aponeurosis to linea alba |
Actions | Bilateral: flexes vertebral column, compresses abdominal contents Unilateral: flexes vertebral column to same side, rotates vertebral column to opposite side |
Intercostals
Origin | Inferior border of the rib above |
Insertion | Superior border of the rib below |
Actions | External Intercostals draw the ventral part of ribs upward, increase space in thoracic cavity Internal Intercostals draw ventral part of ribs down decreasing space |
Suboccipitals
Suboccipital | Rectus Capitis Posterior Major | Rectus Capitis Posterior Minor | Oblique Capitis Superior | Oblique Capitis Inferior |
Origin | Spinous Process of the axis (C2) | Tubercle of the posterior arch of atlas (C1) | Transverse process of atlas (C1) | Spinous process of axis (C2) |
Insertion | Inferior nuchal line of the occiput | Inferior nuchal line of occiput | Between nuchal lines of occiput | Transverse process of atlas (C1) |
Actions | Rock and tilt head into extension, rotate head to same side | Rock and tilt head into extension | Rock and tilt head into extension | Rotate head to same side |
Transverse Abdominus
Origin | Lateral inguinal ligament, iliac crest, thoracolumbar fascia, cartilage of lower six ribs |
Insertion | Abdominal aponeurosis to linea alba |
Actions | Compresses abdominal contents |
Multifidi And Rotatores
Origin | Sacrum And TVPs Of Lumbar Thru Cervical Vertebrae |
Insertion | Spinous Processes Of Lumbar Thru 2nd Cervical Vertebrae (MULTIFIDI SPAN 2-4; ROTATORES SPAN 1-2 VERTEBRAE) |
Actions | Extend, Rotate Vertebral Column To Opposite Side |
Origin | Ligamentum Nuchae, Spinous Processes Of C-7 Thru T-3 |
Insertion | Mastoid Process, Lateral Nuchal Line |
Actions | Unilateral: Rotate Head To Same Side, Laterally Flex Head And Neck Bilateral: Extend Head |
Splenius Cervicis
Origin | Spinous Processes Of T-3 Thru T-6 |
Insertion | TVPs Of The Upper Cervical Vertebrae |
Actions | Unilateral: Rotate Head To Same Side, Laterally Flex Head And Neck Bilateral: Extend Head |
Quadratus Lumborum
Origin | Posterior Iliac Crest, Iliolumbar Ligament |
Insertion | Last Rib, TVPs Of 1st Thru 4th Lumbar Vertebrae |
Actions | Unilateral: Elevate Hip, Laterally Flex, Assists To Extend Vertebral Column Bilateral: Fixes Last Rib During Respiration |
http://www.uggen.net/mike/writing/muscle/spine.htm
Muscle Attachments - Head, neck and face
Bones
- Frontal
- Hyoid
- Mandible
- Maxilla
- Nasal
- Occiput
- Parietal
- Sphenoid
- Temporal
- Zygomatic
Bony Landmarks
- Condyle Of Mandible
- Coronoid Process Of Mandible
- External Occipital Protuberance
- Mastoid Process
- Styloid Process Of Temporal Bone
- Superior Nuchal Line
- Thyroid And Cricoid Cartilages
- Trachea
- Zygomatic Arch
Muscles
- Infrahyoids
- Masseter
- Occipitofrontalis
- Other Muscles Of The Head
- Platysma
- Scalenes
- Sternocleidomastoid
- Suprahyoids And Digastric
- Temporalis
Infrahyoids
Origin | Omohyoid: Superior border of scapula Sternohyoid and Sternothyroid: Manubrium |
Insertion | Omohyoid and Sternohyoid: Hyoid bone Sternothyroid: Thyroid cartilage |
Actions | Depress hyoid bone and thyroid cartilage |
Masseter
Origin | Zygomatic Arch |
Insertion | Angle And Ramus Of Mandible |
Actions | Elevate The Mandible |
Occipitofrontalis
Origin | Frontalis and Occipitalis: Galea aponeurotica |
Insertion | Frontalis: Skin over eyebrows Occipitalis: Superior nuchal line of occiput |
Actions | Frontalis raises eyebrows and wrinkles forehead Occipitalis anchors and retracts galea posteriorly |
Platysma
Origin | Fascia covering superior part of pectoralis major |
Insertion | Edge of mandible, skin of lower part of face |
Actions | Assists depression of mandible (TMJ) tightens neck fascia |
Anterior Scalene
Origin | TVPs Of 3rd To 6th Cervical Vertebrae |
Insertion | First Rib |
Actions | Bilateral: Elevate Ribs During Inhalation, Flex Head and Neck Unilateral: With Rib Fixed, Laterally Flex Neck (Anterior And Middle), Rotate Head and Neck to Opposite Site (Anterior And Middle) |
Middle Scalenes
Origin | TVPs Of 2nd To 7th Cervical Vertebrae |
Insertion | First Rib |
Actions | Bilateral: Elevate Ribs During Inhalation, Flex Head And Neck Unilateral: With Rib Fixed, Laterally Flex Neck (Anterior And Middle), Rotate Head And Neck To Opposite Site (Anterior And Middle) |
Posterior Scalenes
Origin | TVPs Of 5th And 6th Cervical Vertebrae |
Insertion | Second Rib |
Actions | Bilateral: Elevate Ribs During Inhalation, Flex Head and Neck |
Sternocleidomastoid
Origin | Sternal: Head Top Of Manubrium Clavicular: Head Medial One-Third Of Clavicle |
Insertion | Mastoid Process Of Temporal Bone, Lateral Superior Line Of Occiput |
Actions | Unilateral: Laterally Flex Head To Same Side, Rotate Head To Opposite Side Bilateral: Flex Neck, Assist In Inspiration |
Suprahyoids And Digastric
Subprahyoids | Digastric | |
Origin | Geniohyoid and Mylohyoid – underside of mandible Stylohyoid – Styloid process | Mastoid process deep to SCM and splenius capitis |
Insertion | Hyoid bone | Inferior border of mandible |
Actions | Elevate hyoid and tongue, depress mandible (TMJ) | With hyoid bone fixed depresses mandible (TMJ) With mandible fixed elevates hyoid Retracts mandible |
Temporalis
Origin | Temporal Fossa And Fascia |
Insertion | Coronoid Process Of The Mandible |
Actions | Elevate, Retract The Mandible |
http://www.uggen.net/mike/writing/muscle/head.htm
COURTESY
1 comment:
good and simple notes.. but that one dont have nerve supply
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