vertebral column/trunk Flashcards
vertebral body
weight-bearing portion that tends to increase in size as one descend the spine
intervertebral discs
fibrocartilaginous discs between adjacent bodies
spinous process
projection that extends posteriorly from the union for 2 laminae
transverse process
projection off the right and left side of each vertebrae
articular facets
two superior and two inferior facets for articulation
vertebral foramen/canal
formed from the vertebral arch and body, the foramen contains the spinal cord and its meningeal coverings
cervical vertebrae
7 total, first section of spine
atlas
C1
axis
C2
thoracic vertebrae
12 total, each articulating with a pair of ribs, 2nd section of spine
costal facets
a site where a rib forms a joint with a top of a thoracic vertebrae
lumbar vertebrae
5 total, large vertebrae to support the body’s weight
sacrum
5 fused vertebrae, 2nd lowest section of vertebrae
coccyx
4 total vertebrae, Co1 often not fused bt Co2-4 are fused, as a remnant of our embryonic tail
ribs 1-7
true ribs; articulating with sternum directly
ribs 8-10
false ribs; articulating with costal cartilages of the ribs above
ribs 11-12
floating ribs that articulate with vertebrae only
sternum
long flat bone that forms anterior part of ribcage with ribs 1-7
xiphoid process
small knob tht makes bottom part of sternum
(purple portion)
ligamnetum nuchae
attaches at C7 to occipital bone; is the cervical extension of supraspinous ligament and is strong
thoracolumbar fascia
a deep investing membrane with covers that deep muscles of the back of the trunk
linea alba
connective tissue that runs down the midline of the abdomen; separates the left and right rectus muscles
sternocleidomastoid origin
sternal head: manubrium; clavicular head: medial third of clavicle