Contents Of Vertebral Canal

Contents of vertebral canal Vertebral canal Intervertebral foramina

Contents of vertebral canal It contains following structures 1. Epidural space 2. Duramater 3. Subdural capillary space 4. Arachnoid mater 5. Subarachnoid space 6. Piamater 7. Spinal cord

Epidural space: It is a space between the spinal duramater and the periosteum and ligaments lining the vertebral canal. Contents: Loose areolar tissues Semi liquid fat Spinal arteries Internal vertebral venous plexus

Spinal duramater: It is a thick, tough fibrous membrane which forms a loose sheath around the spinal cord. Extension:

Subdural space: A potiential space between duramater and arachnoid mater.

Arachnoid mater: It is a thin, delicate and transparent membrane that loosely invests the entire CNS.

Subarachnoid space: A wide space between piamater and arachnoid mater. Filled with CSF.

Spinal piamater:

Ligamentum denticulatum:

Filum terminale: Delicate thread like structure. Length: Extension:

Spinal nerves: Spinal cord gives rise to 31 pairs of spinal nerves. Chorda equina:

Contents of IVF: 1. 2. 3. 4. 5. 6.

Ends of nerve roots Dorsal root ganglion Nerve trunk Beginning of dorsal and ventral rami Spinal artery Intervertebral vein

Vertebral systems of veins: Very important clinically. Anatomy of vertebral venous plexus 1. 2. 3.

Epidural plexus Plexus within vertebral bodies External vertebral venous plexus

Communications and implications:

Maxillary bones (maxillae) 2 in number. Second largest bone of the face

Parts: 1.

2.

Body: large, pyramidal in shape 4 processes: frontal zygomatic alveolar palatine

Body of maxilla: It has 4 surfaces Anterior Posterior Medial superior