OSTEOLOGY:
Intersection of frontal & 2 nasal bones: Nasion
Zygomatic Bones Forms cheeks
Area of bone where 2 halves of foetal bone fuse: Symphysis Menti
Triangular elevation below symphysis menti: Mental Protuberance
Coronal Suture Separates frontal & parietal bones
Sagittal Suture Separates parietal bones
Lambdoid Suture Separates parietal, temporal bones from occipital
bone
The Mastoid process of the temporal bone is postero-inferior to the
external acoustic meatus opening.
The H-shaped formation of sutures that unite the frontal, parietal,
sphenoid and temporal bones is called: Pterion
Most superior point of skull on sagittal suture is called the: Vertex
Median bony extension of frontal bone is called the: Frontal Crest
The anterior tubercle of ATLAS/C1 gives rise to all Longus Colli muscles
The lower border of the posterior arch of ATLAS receives Ligamentum
Flavum from axis.
The first cervical vertebra is called the atlas, and the second cervical
vertebra is called the axis.
The occipital bone forms the posterior part of the skull and surrounds
the foramen magnum.
Nazahah Essack | OCCUPATIONAL THERAPY
,Nazahah Essack | OCCUPATIONAL THERAPY
,Nazahah Essack | OCCUPATIONAL THERAPY
, SUB-OCCIPITAL TRIANGLE:
The space between the occiput & spine of axis vertebra (C2) is called
the: Suboccipital region
BOUNDARIES OF THE SUB-OCCIPITAL TRIANGLE:
Superomedial Rectus Capitis posterior major
Superolateral Superior Oblique
Inferior Inferior Oblique
Floor Posterior atlanto-occipital membrane and
posterior arch of the C1 vertebrae (atlas)
Roof Semispinalis capitus
INNERVATION OF SUB-OCCIPITAL MUSCLES:
Rectus Capitis posterior major
Rectus Capitis posterior minor
Suboccipital nerve
Inferior Oblique
Superior Oblique
ORIGIN AND INSERTION OF SUB-OCCIPITAL MUSCLES
MUSCLE ORIGIN INSERTION
Rectus Capitis posterior major Spinous Lateral part of
process of axis inferior nuchal
line
Rectus Capitis posterior minor Posterior Medial part of
tubercle of area below
atlas inferior nuchal
line
Inferior Oblique Spinous Transverse
process of axis process of
atlas
Superior Oblique Transverse Lateral area
process of between
atlas nuchal lines
The thickest cutaneous nerve in the body is the: Greater occipital
nerve
Nazahah Essack | OCCUPATIONAL THERAPY