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muscle origins
head, neck and trunk
muscles | origin and insertion |
---|---|
Temporalis | Origin: lateral aspect of skull Insertion: coronoid process of mandible |
Masseter | Origin: zygomatic arch Insertion: Angle/ ramus of mandible |
Medial Pterygoid | Origin: pterygoid process of sphenoid bone Insertion: Medial surface of mandible |
Digastric | Origin: mandible ( anterior belly) and Mastoid of temporal (posterior belly) Insertion: hyoid |
Mylohoid | Origin: mandible Insertion: Hyoid |
Stylohyoid | Origin: Styloid process of temporal Insertion: Hyoid |
Sternohyoid | Origin: Sternum Insertion: Hyoid |
Omohyoid | Origin: Scapula Insertion: Hyoid |
Sternocleidomastoid | Origin: Sternum, Clavicle Insertion: mastoid process of temporal |
Splenius Capitis | Origin: Upper thoracic vertebrae Insertion: Temporal and occipital |
Diaphragm | Origin: Inferior rib cage, lumbar vertebrae Insertion: Central tendon in thorax/abdomen |
External intercostal | Origin: superior rib Insertion: inferior rib |
Internal intercostal | Origin: inferior rib Insertion:superior rib |
Pectoralis minor | Origin: ribs (3-5) Insertion: coracoid process of scapula |
Scalenes | Origin: Cervical vertebrae Insertion: first two ribs |
rectus abdominis | Origin: pubis Insertion: xiphoid process |
External oblique | Origin: lower 8 ribs Insertion: iliac crest pubis |
Internal oblique | Origin: Anterior iliac crest Insertion: lower ribs |
Transversus abdominis | Origin: lower 6 ribs, iliac crest Insertion: linea alba |
Serratus anterior | Origin: Ribs Insertion:Medical boarder of scapula |
Trapezius | Origin: Occipital vertebrae Insertion: Spine and acromion of scapula, clavicle |
Levator scapulae | Origin: transverse processes of cervical vertebrae Insertion: superior angle, medial border of scapula |
Rhomboideus major | Origin: spinous processes of T2-T5 vertebrae Insertion: medial border of scapula |
Rhomboideus minor | Origin: spinous processes of C7-T1 Insertion: medial border of scapula |
Quadratus lumborum | Origin: iliac crest Insertion: last rib and lumbar vertebrae |