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A&P Axial Skeleton
what portion of the skeleton includes the skull, thoracic (rib)- cage, & the vertebral column?
how many vertebrae make up the cervical region
name the vertebral region that forms the superior back and articulates with the ribs
how many vertebrae make up the thoracic region
name the vertebral region that forms the inferior, "lower" back
how many vertebrae make up the lumbar region
name the five fused vertebrae that attaches the axial skeleton to the pelvic girdle of the appendicular skeleton
name the 3-4 fused vertebrae that articulate inferiorly with the sacrum
occipital condyles of the skull
with what features does atlas articulate superiorly?
name the cervical vertebra that allows the head to shake "NO"
dens (odontoid process), large spinous process
name two prominent features of the axis/C2 vertebra
name the structure that binds the dens of the axis to the inner surface of the anterior arch of atlas.
name the landmark vertebra at the base of the neck
name the structure that originates at C7 and holds the head up without muscular effort
name the feature of the sacrum that extends the entire length of the bone, and continues the vertebral canal
median sacral crest
name the ridge formed by the fused spinous processes of the sacral vertebrae.
name the feature of the sacrum formed by the disconnected laminae of the fifth sacral vertebra.
name the feature of the sacrum adjacent to the sacral cornua that forms the opening at the inferior end of the sacral canal.
name the four pairs of holes on either side of the median sacral crest
lateral sacral crest
name the ridge formed by the fused transverse processes of the sacral vertebrae
name the flat sacral area, lateral & anterior to the superior portion of the lateral sacral crest
pelvic girdle/sacroiliac joint
name the point of articulation of the sacral auricular surface where the axial skeleton meets the lower appendicular skeleton
name the narrow inferior portion of the sacrum
name the broad superior portion of the sacrum
name the prominent bulge at the anterior tip of the sacral base
name the "wing" features flanking either side of the sacral base
name the feature of the coccyx formed by the laminae that curve to meet the sacral cornua
give the anatomical term for the breastbone
name the part of the sternum that articulates with the clavicles & the cartilages of the first pair of ribs
name the part of the sternum attached inferiorly to the manubrium, where costal cartilages from ribs 2-7 attach
name the part of the sternum attached inferiorly to the gladiolus, where the diaphragm & rectus abdominis muscles attach. this is the smallest part of the sternum.
what body cavity includes the sternum, ribs & costal cartilage?
there are how many pairs of ribs?
what name is given to the first 7 pairs of ribs
name the extensions that attach the first seven ribs to the sternum
name the indentation at the superior border of the manubrium
what name is given to the 3 pairs of ribs (8, 9, 10) that share a cartilage connection to the sternum
what name is given to rib pairs 8-12 since they do not attach directly to the sternum
ribs 8, 9, 10
which rib pairs fuse and merge with the cartilage of rib pair 7
what name is given to rib pairs 11 & 12 since they do not attach to the sternum or other ribs
head of rib
what rib feature articulates with two demifacets of thoracic vertebrae
what rib feature articulates with the transverse process of thoracic vertebrae
what rib feature begins curving toward the sternum
what rib feature attaches ribs to the sternum, provides flexibility & is made of hyaline cartilage
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