Anatomy chap5 axial skeleton
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57 terms
Terms | Definitions |
|---|---|
 total number of bones in skeleton | 206 |
| number of bones in axial skeleton | 80 |
| location of axial skeleton | skull, vertebral column, thoracic cage, hyoid, middle ear bones |
| number of bones in the appendicular skeleton | 126 |
| location of appendicular skeleton | pectoral girdle, upper limbs, pelvic girdle, lower limbs |
| fontanel | soft spot btw bones that eventually harden ex. skull |
| suture | interlocking line of union between bones ex. skull |
| foramen | round/oval opening through bone for passage of bl vessels and nerves |
| meatus | canal like passageway |
| paranasal sinus | cavities within bones lined with mucosa membrane. Art with another bone |
| facet | flat area on a bone |
| process | any bone prominence for MA |
| epicondyle | raised area on or above condyle for MA |
| condyle | rounded projection for MA and ART |
| tubercle | small rounded projection or process for MA |
| tuberosity | large rounded projection(can be roughened) for MA |
| trochanter | very large blunt rounded areas for MA ex. femur |
| head | bony expansion carried on a narrow neck for ART |
| frontal bone | anterior |
| frontal sinus | 2 paranasal sinuses |
| occipital | posterior |
| foramen magnum | large opening for spinal chord |
| occipital condyle | ART with first vertebrae and for MA |
| external auditory meatus | canal like passage where sound travels into inner ear |
| mastoid process | larger for neck MA |
| styloid process | smaller for neck MA |
| ethmoid | irregular shaped |
| ethmoid sinus | top part of nasal cavity |
| sphenoid | butterfly shaped |
| sella turica (turks saddle) | holds petuitary gland |
| facial bones | 14 |
| maxilla | forms anterior part of hard palate |
| infraorbital foramen | passageway for bv and nerves |
| maxillary sinus | cavities within infraorbital sinus |
| mandible | jaw, only moveable bone |
| mandibular condyle | ART with temporal bone |
| coronoid process | for MA |
| zygomatic | cheek bones |
| palatine | inferior portion of hard palate |
| vomer | median line of nasal cavity |
| nasal | form bridge of nose |
| lacrimal | tiny, form medial wall of orbits |
| inferior nasal concha | lateral sides of nasal cavity, tiny |
| coronal suture | between frontal and parietal bone |
| sagittal | between 2 parietal bones |
| lambdoidal | between occipital and parietal bones |
| squamosal | between temporal and parietal |
| fontanels | posterior, mastoid, anterior, sphenoidal |
| purpose of fontanels | so skull can shift during childbirth and growth of brain |
| paranasal sinuses | frontal, ethmoid, sphenoid, maxillary |
| importance of paranasal sinuses | resonance of sound, makes skull lighter |
| hyoid bone | only bone that does not ART with any other bone mid-neck region |
| ear bones | smallest, ossicles, hearing (carry sound vibrations) |
| deviated septum | septum off to one side. growth defect |
| cleft palate | gap or hole in maxilla and palatine. can happen in lip too |
| TMJ | temporal mandible joint weakens and pops out caused from grinding teeth |
| sinusitis | inflammation of mucus membranes that line sinuses. caused by bacterial infection |
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