Definition Of Craniovertebral Junction

The structure that furnishes the axis for the rotation of the head from side to side is the:

Motor Tracts- Lateral and Anterior corticospinal tracts all decussate (cross over) between the cerebral cortex and the spinal cord.

A neuromuscular junction is a chemical conjunction formed during the contact between motor neuron and a muscle fiber. Each branch of a motoneuron forms a single junction with a

lower portion of the thoracic vertebrae (T9-T12) and the upper portion of the lumbar vertebrae (L1-L2).

The neural epidural junction is where the psychological, physiological and somatic systems intersect. These systems all give access to my personal identity. In addition, the three systems redirect thoughts and feelings on how I associate with systems and through the colors, the subconscious and a compassionate self is revealed by the following.

atlas is a ring of bone with a large foramen (hole) that protects the start of the spinal cord, and

The brain is covered by meninges layers consisting the dura mater, the arachnoid mater and the pia mater. The dura mater forms the outermost layer of meninges that act as a protective and supportive if the brain. While the arachnoid mater and the pia mater form the middle and the innermost layer of meninges respectively. Furthermore, the subarachnoid space lies between the arachnoid and pia mater responsible for circulation of cerebrospinal fluid and contains most of blood vessels in the brain (Lazo, 2005).

- At system level- a) coincidence of centric occlusion and centric relation (CO = CR), b) when there is freedom for the mandible to move slightly forwards from the CR in the same horizontal and sagittal plane it is called freedom in centric occlusion, c) when the mandible moves there is immediate and lasting posterior disclusion called anterior guidance on front teeth

The patient will then flex her spine as far as possible to create the maximum amount of space between the vertebrae as possible (Clinical Case, 2000). The procedure will take place inferior to the L4 spinous process, between the L4 and L5 space. The spinal cord tapers into the conus medullaris and branches into the cauda equina superior to this space around the L2 vertebra. The space inferior to the L4 will allow the physician to access an area with a large amount of CSF with nerve roots, but no spinal cord (Drake et al,

The thoracic and lumbar vertebrae form three primary ossification centers, one for the left and right sides of the neural arch, and one for the body. they are fusing between the ages of 2 and 6 years. The two neural arches provide space for the spinal canal. There are four typical physes: the endplate on the cephalad and caudad aspect of each body, and a neurocentral physis at the junction of the body with each pedicle. (12)

The four major components of the axial skeleton include the skull, spine, ribs, and sternum. The structures of the skull provides framework that supports the brain which in turn supports the spinal cord. The spinal cord keeps our upper half of our body sitting upward. The spine is also a connecting piece for all other parts of the skeleton. The ribs protect lungs and other organs underneath from external damage. The ribs are bonded through the spine which holds the skull upright. Finally, the sternum is connected to the rib bone, connected to spine/skull. Its primary function is to serve as a connecting piece for the rib cage that stabilizes the thoratic skeleton. The axial skeleton provides support and structure for adjusting the position

Coccyx functions to support the three parts of a person in a seated position. Weight is distributed between the bottom two hip bones (or ischium) and tailbone, balance and stability when a person is sitting. Women especially tend to use the coccyx at a maximum level because they sit more than men.

CN V: Temporal and masseter muscles contact bilaterally. Able to identify light, sharp, dull touch to forehead, cheek, and chin. Corneal reflex present.

The articulation of the sigmoid notch with the ulnar head allows rotation of the radiocarpal unit in the transverse plane.[ 19]

Principle 2: In the abutment teeth adjacent to the tooth and tissue supported edentulous spaces (Kennedy Class I & II and long span Class III & IV):