Module Exam 5: Spinal Cord Flashcards
(89 cards)
Parts of the vertebra
Posterior segment, Intervertebral disc & Anterior segment “PIA”
Vertebral column
Cervical 7, Thoracic 12, Lumbar 5, Sacral 1 & Coccygeal 1
Lies within the vertebral canal
Spinal cord
Three surrounding fibrous membranes that protects the Spinal cord
Meninges
Spinal cord is held in position by __________ on each side and _________ inferiorly.
Denticulate ligaments. Filum terminale.
In spinal cord, segmented and paired posterior/sensory and anterior/motor roots corresponding to each segment of the cord leave the vertebral canal through the
Intervertebral foramina
Shorter than the vertebral column and terminates in the adult at the level of
Spinal cord. Lower border of first lumbar vertebra.
Spinal cord components
Gray & white matter and central canal
Columns in the White Matter
Posterior F, Anterior F & Lateral F. (PAL)
Each column in the white matter is subdivided into these tracts:
Ascending T, Intersegmental T & Descending T “AID”
Parts of the Gray Matter
Posterior H, Anterior H & Lateral H “PAL”
The cell bodies in the gray substance are grouped into clusters of _______.
Nuclei of laminae
Laminae of Rexed: Located in the posterior horn
Laminae I-VI
Laminae of Rexed: Located in the lateral horn
Lamina VII
Laminae of Rexed: Located in the anterior horn
Laminae VIII & IX
Laminae of Rexed: gray substance surrounding the central canal
Lamina X
Vascular supply from vertebral
Anterior spinal artery
Vascular supply paired, from vertebral
Posterior spinal arteries
Vascular supply of anterior and posterior SC
Radicular arteries
Vascular supply of aorta
Artery of Adamkiewiscz
Ascending tract for position sense, 2pt discriminative,vibration sense & stereognosis.
Dorsal/Posterior Column
Part of the ascending tracts
Dorsal/Posterior column & Spinothalamic tracts
Tract for pain & temperature
LSTT
Tract for touch and pressure
ASTT