GLOSSARY

The spinous process is the posterior, midline projection of each vertebra, extending backward and downward from the junction of the two laminae, and is palpable beneath the skin in the midline of the back.

Characteristics

• Cervical: short and often bifid; the spinous process of C7 is long and prominent, giving it the name vertebra prominens.
• Thoracic: long, thin, and pointing downward, overlapping like roof tiles and limiting extension.
• Lumbar: short, broad, and nearly horizontal, shaped like a hatchet, for attachment of powerful back muscles.

Function

Attachment of the back muscles