Anatomy Chapter 13
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Anatomy Chapter 13
Spine & Ribs
How many bones make up the vertebral column?
How many true (moveable) vertebrae are there?
How many total vertebrae are there?
How many regions are there in the vertebral column?
From superior to inferior list the five regions and how many vertebrae are in each.
cervical (7), thoracic (12), lumbar (5), sacral (5), & coccygeal (4)
From superior to inferior list the four curvatures of the spine as seen in a lateral view.
cervical, thoracic, lumbar, & sacral
What curves develop in the womb? Give the collective and individual names.
thoracic & sacral
What curves develop after birth? Give the collective and individual names.
cervical and lumbar
What is the anterior, cylindrical weight-bearing portion of a vertebra?
What two lateral structures of a vertebra form the pillars of the passageway for the spinal cord?
On a vertebra what structures extend from the lateral pillars to the midline?
Together the posteriorly projecting pillars and the extensions to the midline form what structure?
Together the posteriorly projecting pillars and the extensions to the midline form what passageway within a vertebra?
The vertebrae form what collective passageway for the spinal cord?
Adjacent vertebrae form what passageways for spinal nerves?
What posteriorly projecting structures of the vertebrae can be palpated?
What lateral projections occur on each vertebra?
What processes of a vertebra form synovial joints with the vertebrae immediately superior and inferior it?
superior & inferior articular processes
What smooht, flat, articular surfaces occur on a vertebra?
What are the pads of fibrocartilage between vertebrae?
What is the outer ring of fibrocartilage within an intervertebral disc?
What is the inner, circular regions of an intervertebral disc?
What is the relative size of the cervical vertebrae?
What is the shape of the spinous processes of C1-C6?
What openings in the cervical vertebrae allow the passage of the verterbral arteries and veins?
What is another term for C1?
What structures does C1 lack?
body & spinous process
What is another anatomical term for C2?
During development the body of C1 ffuses to C3 to form what structure?
dens (odointoid process)
What is another anatomical term for the spinous process of C7?
What is the general shape of the bodies of T1-T12?
Thoracic vertebrae can be distinguished from all other vertebrae by what features?
What is the general shape of the bodies of the lumbar vertebrae?
large, round, oval
What is teh characteristic of the spinous processes of the lumbar vertebrae?
thick & blunt posteriorly
What is the anatomical term for the atnerior, superior bulge of the sacrum?
What paired openings occur on the anterior surface of the sacrum?
anterior sacral foramina
The spinous processes of the sacrum form what structure?
median saceral crest
What are the paired openings on the posterior side of the sacrum?
posterior sacral foramina
What lateral structures of the sacrum articulate with the ossa coxae?
What is the anatomical term for the tailbone?
What sturctures make up the thoracic cage?
thorax, ribs, & sternum
What is the anatomical term for the breastbone?
What are the three main parts of the sternum?
manubrium, clavicular notches, & xiphoid process
What are the depressions on the sternum for the articulation of the clavicles?
What is the shallow, superior depression on the sternum?
What depressions on the sternum do the ribs articulate with?
What palpable feature lies at the articulation of the manubrium and the body of the sternum?
How many ribs are ther?
What ribs have their costal cartilages directly articulated with the sternum? What are their numbers?
true ribs (1-7)
What ribds do not have their costal cartilages directly articulated with the sternum? What are their numbers?
false ribs (8-12)
What type of rib has no connection with the sternum? What are their numbers?
floating ribs (11-12)
What part of a rub articualtes with the body (bodies) of a vertebra(e)?
What part of a rib articualtes with the transverse process of a vertebra?
What part of a rib lies between the head and tubercle?
Ribs project posterolaterally from the vertebral column. What is the region of a rib where it chagnes if direction and begins curving toward the sternum?
What is the main part of a rib?
What feature on the inferior side of a rib marks the path of a rib marks the path of an artery, a vein, and a nerve?