4.1 Anatomy of the Skeleton: Overview and Axial Skeletons Part 5 Flashcards
What does a typical thoracic vertebra look like?
long, thin spinous process that does not split and points inferiorly
What are the thoracic vertebral bodies like?
medium in size and contain facets for rib articulations
What do the transverse processes of thoracic vertebra have?
costal facets for rib articulations
Which thoracic vertebra do not contain the facets for rib articulation?
T11 and T12
What does a typical lumbar vertebra look like?
shorter spinous process that is broader and points posteriously
Which veterbral bodies are the largest?
lumbar vertebral bodies
What are lumber vertebral bodies the larges?
allow them to support the weight of the head, neck, trunk, and upper limbs
What are the transverse processes of the lumber vertebra like?
shorter and have no costal facets
Which vertebra have the smallest vertebral foramen?
lumber
What is the sacrum composed of?
five bones that are fused together
What is the widest portion of the sacrum? Where does it articulate with?
base; L5 vertebra above it
What is the coccyx composed of?
four to five fused vertebra
When do the coccyx bones begin to fuse together?
age 25
What is the purpose of the sacrum and coccyx?
provide attachment sites for ligaments and tendons; needed for pelvic stability
How many pairs of ribs are there?
12
