Exam #2 (Lecture 5) Flashcards
where is the squamous portion?
forms front and upper part of temporal bone
look at lecture 5, slide 14
where is the petrous portion?
forms part of skull base between sphenoid and occipital bones
look at lecture 5, slide 14
where is the mastoid part?
most posterior part of temporal bone
look at lecture 5, slide 14
where is the temporal and occipital bones?
look at lecture 5, slide 15
occipital bone forms much of ?
posterior base of the skull
the external occipital protuberance serves as an attachment site for what?
ligamentum nuchae
medial portion of upper trap
where does the superior nuchal line extend from? what attaches there?
laterally from external occipital protuberance
several extensor muscles attach here
what attaches at the inferior nuchal line?
semispinalis capitis
what is the large hole at the back of the skull called?
foramen magnum
what kind of component are the occipital condyles?
convex component of AO joint
what are the roles of the vertebral column as a whole?
stability and motion
protection (spinal cord, ventral and dorsal nerve roots, dorsal root ganglion, exiting spinal nerve roots, vertebral artery)
what are the 3 subdivisions of a vertebrae?
body
posterior elements (transverse and spinous processes, laminae, articular processes)
pedicles
what is the function of the vertebral body? located anterior or posterior?
primary weight bearing structure of each vertebrae
anterior
where is the intervertebral disc located?
between vertebral bodies below C2
what is the function of the intervertebral disc?
shock absorber and spacer throughout the vertebral column
where is the intervertebral joint located?
between superior and inferior surfaces of an intervertebral disc and adjacent vertebral bodies
what is the intervertebral joints function?
primary bond between vertebrae
where are pedicles located?
dorsal projection of bone from mid to superior part of vertebral body
what is the function of pedicles?
bridge that connects the body with posterior elements
transfers muscle forces applied to the posterior elements to the discs/body
where is the lamina located?
connecting to the base of the spinous process to each transverse process
what is the function of lamina?
protects posterior aspect of spinal cord
where are the transverse processes located?
from junction of lamina and pedicle
what is the function of transverse processes?
attachments for muscles, ligaments and ribs
where are spinous processes located?
dorsal midline projection of bone from lamina
