Accessory process

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Bone: Accessory process

A lumbar vertebra from above and behind. (Accessory process labeled at center right.)
Latin	processus accessorius vertebrae lumbalis
Gray's	subject #23 106

Of the tubercles noticed in connection with the transverse processes of the lower lumbar vertebrae, the inferior is situated at the back part of the base of the transverse process, and is called the accessory process.

External links

accessory+process+of+lumbar+vertebra at eMedicine Dictionary

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

Bones of torso (TA A02.2,3, GA 2.96–128)

Vertebra

General structures	body of vertebra, vertebral arch (pedicle, lamina, vertebral notch), foramina (vertebral, intervertebral), processes (transverse, articular/zygapophysis, spinous), spinal canal

Cervical vertebrae	Uncinate process of vertebra · Transverse foramen · Anterior tubercle · Carotid tubercle · Posterior tubercle C1 (lateral mass, anterior arch, posterior arch), C2 (dens), C3, C4, C5, C6, C7

Thoracic vertebrae	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 costal facets (superior, inferior, transverse) · Uncinate process of vertebra

Lumbar vertebrae	L1, L2, L3, L4, L5, processes (accessory, mammillary)

Sacrum	Base: sacral promontory · ala of sacrum Lateral surface: sacral tuberosity · pelvic surface (anterior sacral foramina) Dorsal surface: posterior sacral foramina · median sacral crest · medial sacral crest · lateral sacral crest · sacral canal (sacral hiatus)

Coccyx	Coccygeal cornu

Thoracic skeleton

Rib	specific ribs (1, 2, 9, 10, 11, 12, true – 1–7, false – 8–12, floating – 11–12) · parts (Angle, Tubercle, Costal groove, Neck, Head)

Sternum	Suprasternal notch, Manubrium, Sternal angle, Body of sternum, Xiphisternal joint, Xiphoid process

Thoracic cage	Superior thoracic aperture · Inferior thoracic aperture · Intercostal space · Costal margin · Infrasternal angle

M: BON/CAR

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noco/cong/tumr, sysi/epon, injr

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