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Where is the temporal bone located and what does it articulate with?
location: side of the skull (looks like a roosters head with the hair as a comb shape, beak as a pointer, wattles as the little ears (mastoid process example)
articulates with sphenoid, parietal, and occipital bone
Zygomatic process of the temporal bone articulates with what? what do they form?
articulates with temporal process of zygomatic bone
to form the zygomatic arch
Where is the ethmoid bone located and what is on each side of the ethmoid bone?
location? behind the bridge of the nose
Superior side? cribriform plate (flat plate) with small holes in it called olfactory foramina (allows olfactory nerves to pass from olfactory organ to the brain), and the the crista galli seperates the cribriform plate into left and right halves
anterior side? perpendicular plate (long vertical plate of bone) forms part of nasal septum
on either side? tiny, curved, bone projections called superior & middle nasal conchae
both sides (lateral)? lateral masses
What does the sphenoid bone articulates with?
frontal, parietal, occipital, ethmoid, and temporal bones of the cranium * palatine bones, zygomatic bones, vomer, & maxillae of the facial bones
How many vertebrae's are there and how many in cervical, thoratic, and lumbar?
total: 24 (my age)
- cervical: 7
- thoracic: 12
- lumbar: 5
What is the job of the atlas?
atlas is C1 that is designed to pivot on the axis (C2), which permits you to turn your head from side to side. (allows you to say no)
What does the atlas and axis together form?
atlas (C1) and axis (C2) together form a pivot joint; therefore, when you turn your head from side to side, the atlas is rotating on the more stationary axis
What is the only vertebrae that has a transverse foramen?
What is the job of the body of vertebrae and articular processes?
body - bears weight and increases in size as one moves down the vertebral column
articular process - superior & inferior articular process that are used to join one vertebra to another
What is the difference in looks of the thoracic vertebra vs. lumbar vertebra?
- thoracic vertebra is a bird with the wings diagonal
- lumbar vertebra is a bird with the wings horizontal
What are the three parts the sternum is divided into and what is the sternum commonly called?
commonly called breastbone
divided into 3 parts: manubrium, body, and xiphoid process
What does the manubrium, body, and xiphoid process articulate with?
Manubrium - clavicles and coastal cartilages of the first pair of ribs
Body -ribs through coastal cartilages (largest)
Xiphoid process - does not articulate with another bone (smallest)
How many pairs of ribs are they and what are their names?
TOTAL: 12 pairs
True ribs 1-7 - dirrectly attach to sternum through coastal cartilages
False Ribs 8-10: do not directly attach to sternum
Floating Ribs 11-12: have no connection to the sternum