A Typical Vertebra Flashcards Preview

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Flashcards in A Typical Vertebra Deck (17):

Vertebral body

The dense portion ventral to the vertebral foramen.


Cranial extremity (= Vertebral head)

The rounded, cranial end of the vertebral body.


Caudal extremity (= Vertebral Fossa)

The caudal end of the vertebral body; contains a depression (fossa)


Ventral crest

The ventral, longitudinal ridge on the body of cervical (except atlas), cranial, and caudal thoracic, and lumbar vertebrae.


Vertebral arch

The dorsal part that forms, along with the vertebral body, the vertebral foramen.


Pedicle (2)

The part of the arch that attaches to the vertebral body; one on each side.


Lamina (2)

There are two laminae; one on each side. They form the roof of the vertebral arch.


Vertebral foramen

The opening formed by the vertebral arch and body. Collectively these form the vertebral canal.


Spinous process

The single prominence projecting dorsally from the vertebral arch


Transverse Process (2)

The left and right prominences projecting laterally from the junctions of the pedicles with the vertebral body.


Cranial articular process (2)
Caudal articular process (2)

The paired processes located at the junctions of the laminae with the pedicles. They form synovial joints with the articular processes of adjacent vertebrae.


Interarcuate space

The dorsal space between the vertebral arches of articulated vertebrae.


Interarcuate spaces are spanned by ______.

yellow ligaments (= ligamenta flava)


Where is regional anesthesia involving the spinal cord administered?

A needle is inserted through the interarcuate space, and anesthetic solution is injecting into either the epidural cavity ("epidural anesthesia") or subarachnoid space ("spinal anesthesia")


Cranial vertebral notches and caudal vertebral notches

Indentations on each end of the pedicle which when the vertebrae are articulated, form the intervertebral foramina.


What passes through the intervertebral foramina?

Spinal nerves


Lateral vertebral foramen

Results from the conversion of a large caudal vertebral notch into a foramen within the pedicle, especially in the thoracic vertebrae. This foramen communicates with the vertebral foramen. Unlike the lateral vertebral foramina of the atlas and axis, lateral vertebral foramina of the "typical vertebra" are not always present. They are seen frequently in the ox, occadionally in the horse, and are often doubled in the pig.