Flashcards in Regions of the Vertebral Column: Lumbar Spine (Typical Lumbar Spine: L1-L4/Atypical Lumbar Vertebrae: L5) Deck (40)
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1
What accounts for the direction of the lumbar curve?
The vertebral body and intervertebral disc have a greater anterior height than posterior height
2
What is the effect of aging on the vertebral body of a lumbar vertebra?
Decrease in height, increase in circumference
3
How many joint surfaces are present on the vertebral body of a typical lumbar?
Six
4
What muscles may attach to a typical lumbar vertebral body?
Psoas major and psoas minor
5
Psoas minor will only attach to the vertebral body of which segments?
T12, L1
6
What is the name given to ligaments which attach the vertebral body to articular process?
Transforaminal ligaments
7
Hofmann ligaments are identified in which regions along the vertebral column?
Cervical--upper thoracic region and lumbar region
8
Cervical--upper thoracic Hofmann ligaments will attach what structure together?
Dura mater to segments above
9
What is the highest level known to demonstrate Hofmann ligaments?
C6
10
What is the proposed function of the cervical--upper thoracic Hofmann ligaments?
Resist caudal movement of the dural sac; resist gravitational forces on the dura and cord
11
Lumbar Hofmann ligaments will attach what structures together?
Dura mater to lower segmental levels
12
What is the proposed function of the lumbar Hofmann ligaments?
Resist cranial movement of the dural sac during flexion
13
What osseous conditions of lumbar vertebrae facilitate a spinal tap in this region?
Overlap of the laminae, shingling, diminishes; overlap of spinous processes, imbrication, diminishes
14
Beginning with the L1 transverse process, what is the generic direction and relative length of each succeeding lumbar transverse process?
Each transverse process is directed straight lateral and increases in length from L1-L3. L4 then begins to decrease in length
15
What is the name of the elevation near the origin of the lumbar transverse process?
Accessory process
16
Congenital elongation of the lumbar accessory process results in what feature?
Styloid process
17
Congenital elongation of the lumbar accessory process occurs with what frequency?
7% occurence
18
What ligament(s) will attach to the lumbar accessory process?
Mammillo-accessory ligament
19
What was believed to be entrapped by the mammillo-accessory ligament?
the medial branch of the dorsal ramus of a lumbar spinal nerve
20
What muscle(s) attach to the lumbar accessory process?
Longissimus thoracis and intertransversarii
21
what ligament attaches the twelfth rib to the transverse process of L1?
The lumbocostal ligament
22
What muscles may attach to the transverse process of a typical lumbar vertebra?
Psoas major, quadratus lumborum, longissimus thoracis, rotator brevis, rotator longus, and intertransversarii
23
What ligaments attach to the transverse process of a typical lumbar vertebra?
The lumbocostal, mammillo-accessory, and intertransversarii ligaments
24
What is the orientation of the typical lumbar superior articular facet?
Backward, upward, ,medial (BUM); typically concave
25
What is the orientation of the typical lumbar inferior articular facet?
Forward, lateral, downward (FoLD); significant convexity
26
What is the name given to the projection on the lumbar superior articular process?
Mammillary process
27
What muslce(s) will attach to the mammmillary process?
Multifidis and intertransversarii
28
How many synovial joints are present on a typical lumbar vertebra?
Four
29
What i the position of he lumbar zygapophysis in children?
the zygapophysis lies in the coronal plane
30
