Term
| what are the bones in the axial skeleton? |
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Definition
| Skull, bones associated with the skull, vertebral column, and thoracic cage |
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Term
| what are the purposes of the axial skeleton? |
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Definition
| provides a framework that supports and protects the brain, spinal cord, and the thoracic and abdominal organs. Provides surface area for the attachment of muscles that 1)adjust the positions of the head, neck, and trunk; 2)perform respiratory movements; 3)stabilize or position parts of the appendicular skeleton. |
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Term
| How many bones in the skull? |
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Definition
| 22 bones:8 form the cranium (braincase), and 14 are facial bones |
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Term
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Definition
| form where 2 bones connect (joints) |
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Term
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Definition
1)lessen the weight of the bone
2) the mucous membrane lining them produces mucus that moistens and cleans the air in and adjacent to the sinus
3)resonating chambers in speech production |
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Term
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Definition
| across the posterior surface of the skull. Connects the occipital bone and the 2 parietal bones. |
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Term
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Definition
| attaches the frontal bone to the 2 parietal bones |
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Term
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Definition
| formed by the occipital, parietal, and frontal bones |
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Term
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Definition
| from the lambdoid suture to the coronal suture, between the parietal bones |
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Term
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Definition
| joins the temporal bone and the parietal bone |
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Term
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Definition
| Maxillae (2), palatine bones (2), nasal bones (2), inferior nasal conchae (2), zygomatic bones (2), lacrimal bones (2), vomer (1), mandible (1). |
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Term
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Definition
| occipital (1), parietal (2), frontal (1), temmporal (2), sphenoid (1), ethmoid (1). |
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Term
| other bones associated with the skull (7) |
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Definition
| hyoid (1), auditory ossicles (6). |
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Term
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Definition
| bony recesses that contain the eyes |
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Term
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Definition
| frontal bone-roof; maxilla-most of the floor; maxilla, lateral mass of the ethmoid, and lacrimal bone-orbital rim and 1st portion of the medial wall; sphenoid and maxilla articulate with the zygomatic-lateral wall and rim of the orbit |
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Term
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Definition
| air-filled chambers connected to the nasal cavities |
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Term
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Definition
| fibrous, non-ossified areas between the cranial bones |
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Term
| anterior fontanelle (soft spot) |
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Definition
| largest fontanelle, it lies at the intersection of the frontal, sagittal, and coronal sutures in the anterior portion of the skull. |
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Term
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Definition
| at the junction between the lambdoid and sagittal sutures |
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Term
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Definition
| at the junction between the squamous sutures and the coronal suture. |
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Term
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Definition
| at the junction between the squamous sutures and the lambdoid suture. |
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Term
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Definition
| a bend in the septum (boxers and hockey players) |
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Term
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Definition
| cervical, thoracic, lumbar, and sacral |
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Term
| primary curves (accommodation curves) |
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Definition
| the thoracic and sacral (present at birth) |
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Term
| secondary curves (compensation curves) |
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Definition
the lumbar and cervical (develop after birth).
lumbar forms when the baby begins to walk
cervical forms when the baby learns to hold up his head |
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Term
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Definition
| premature closure of one or more fontanelles causing unusual distortions of the skull. |
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Term
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Definition
(1)vertebral body
(2)vertebral arch
(3)articular processes |
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Term
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Definition
| transfers weight along the axis of the vertebral column |
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Term
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Definition
| forms the posterior margin of each vertebral foramen; has walls called pedicles, and a roof formed by flat layers called laminae |
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Term
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Definition
| projects posteriorly from the point where the vertebral laminae fuse to complete the vertebral arch. Can see and feel when the spine is flexed. |
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Term
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Definition
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Term
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Definition
| gaps that separate pedicles of successive vertebrae, permit the passage of nerves |
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Definition
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Term
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Definition
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Term
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Definition
| abnormal curvature of the spine |
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Term
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Definition
| cervical, thoracic, lumbar, sacral, and coccygeal |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| a notched spinous process, found on C2-C6 |
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Term
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Definition
| cervical vertebra C1-holds up the head; permits you to nod;lacks a body and a spinous process, has a large, round vertebral foramen bounded by anterior and posterior arches |
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Term
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Definition
| C2 (axis); during development the body of the atlas fuses to the body of the axis, creating the dens, or odontoid process of the axis. A transverse ligament binds the dens to the inner surface of the atlas forming a pivot for rotation of the atlas and skull; the axis allows us to shake our heads no. |
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Term
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Definition
| a stout elastic ligament that starts at the vertebra prominens and extends to an insertion along the occipital crest of the skull. |
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Term
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Definition
| C7, the interface between the cervical curve and the thoracic curve. The transverse processes are large, providing additional surface area for muscle attachment. |
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Term
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Definition
| articulate with the heads of the ribs. |
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