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UIC/KN251/LabWeek1

Axial Skeleton

QuestionAnswer
form the upper lateral surfaces of the skull parietal bone
inferior to the parietal bone; contains 2 processes temporal bone
pointed structure on the temporal bone that protrudes inferiorly styloid process
thicker projection on the temporal bone; located posterior and lateral to the styloid process and protrudes inferiorly mastoid process
front of the skull; forms your forehead frontal bone
posterior/inferior skull; contains 3 important structures occipital bone
large oval opening within the occipital bone; allows the brainstem to connect with the spinal cord foramen magnum
2 oval facets on either side of the foramen magnum; articulate with the 1st cervical vertebra (the atlas) in the neck occipital condyles
posterior protrusion from the occipital cone; can be felt as the "bump" on the back of head external occipital protuberance
wide, butterfly-shaped bone that forms the central portion of the base of the skull; it ends bilaterally between the frontal & temporal bones sphenoid bone
located anterior to the sphenoid bone and posterior to the maxilla; forms the upper part of the nasal septum, the roof of each nasal cavity, and a part of the lateral walls including the superior and middle nasal conchae ethmoid bone
lies along a coronal plane that divides the frontal bone from the left and right parietal bones coronal suture
inverted, v-shaped suture, separates the occipital bone from each of the parietal bones lambdoid suture
oriented in a midsagittal plane, this suture extends from the frontal to the occipital bones; divides the L&R parietal bones sagittal suture
runes anterior to posterior; fusion b/t the temporal & parietal bones (on L&R side of skull) squamous suture
fuses centrally to form the upper jaw(the areas b/t the orbits & upper teeth) contributes to the orbit and hard palate; holds the upper teeth maxilla
forms the anterior part of your cheekbone; extends to the maxilla anteriorly & temporal bone posteriorly zygomatic bone
posterior part of the palate; fuses w/maxilla to form hard palate; arches laterally and superiorly to form the posterior portion of the lateral wall of the nasal cavity palatine bone
this paired bone fuses anteriorly to form the bridge of the nose nasal bone
small bone located in (and contributing to) the anterior & medial wall of the orbit; lies deep to portions of the tear duct lacrimal bone
a small protruding bone found on the interior and lateral surfaces of each nasal cavity inferior nasal concha
protrudes superiorly from the maxilla, forms the posterior/inferior portion of the nasal septum vomer
lower jaw mandible
posterior/superior process that articulates with the temporal bone bilaterally; forms the temporomandibular joint (TMJ) condylar process of mandible
lies anterior to the condylar process and projects superiorly coranoid process of mandible
isolated horse-shoe shaped bone that lies suspended in the neck & does NOT articulate w/any other bone hyoid bone
largest thickest weight bearing portion of a vertebra, located anteriorly in the spine vertebral body
arched structure posterior to the vertebral body vertebral arch
extend bilaterally from the body to the transverse process pedicle of vertebra
extend laterally from each pedicle transverse process of vertebra
extends from the transverse process to the spinous process lamina of vertebra
non-paired posterior projection of the vertebral arch spinous process of vertebra
bilateral superior & inferior projections which articulate with the vertebra above and below articular process of vertebra
located only in the cervical spine, a small circular opening in each transverse process transverse foramen of cervical vertebrae
supports the skull; articulates w/occipital condyles; this vertebra does not have a body, only an anterior arch C1/atlas
unique to this bone is the dens which articulates with the anterior arch of C1 C2/axis
anterior projection of the first sacral vertebra sacral promontory
continuation of the vertebral canal in the sacrum sacral canal
4 bilateral paired openings corresponding to the intervertebral foramina; open on both the anterior & posterior surfaces sacral foramina
ending of the sacral canal sacral hiatus
posterior projection running the length of the sacrum; corresponds to the spinous processes of other vertebrae median sacral crest
bilateral portions of the sacrum, most easily appreciated from the superior view of the sacrum (wings) ala (of the sacrum)
cartilaginous discs which lie in b/t each vertebral body but NOT b/t any fused vertebrae or C1 & C2 intervertebral disk
passageway formed by the joining of articular processes of the vertebrae above & below one another; allow the peripheral or spinal nerves to exit the spinal canal intervertebral foramen
breastplate; consists of 3 fused parts sternum
upper triangular shaped portion of the sternum manubrium
largest elongated portion of sternum body of sternum
most inferior and smallest portion of sternum xiphoid process
articulate posteriorly with the vertebral column & anteriorly DIRECTLY with the sternum true ribs (#1-7) or vertebrosternal ribs
articulate posteriorly with the vertebral column & anteriorly with the ribs above by cartilagenous connection false ribs (#8-12) or vertebrochondral ribs
ribs that don't articulate with anything anteriorly floating ribs (#11 & 12)or vertebral ribs
most medial portion of rib; articulates with vertebrae (posterior to the shaft of the rib) head of rib
narrows and extends laterally from the head; lies b/t the head & tubercle neck of rib
"bump" @ junction of neck & shaft (or body)& articulates with the transverse process of the vertebra tubercle of rib
extends from the tubercle laterally; curves laterally, then anteriorly & forms majority of length of rib shaft of rib (or body of rib)
found deep to compact bone in various parts spongy/trabecular bone
Created by: knewey44