A&P WEEK 9 Skeletal Anatomy. Part 1
Terms for a process which articulates with adjacent bones head,condyle, trochlea
Term for a ditch fossa,sulcus
2 types of skeleton Axial and Appendicular
What is in the axial skeleton Skull and associated bones, thoracic cage, vertebral column.
What is in the appendicular skeleton Pectoral girdle, upper limbs, pelvic girdle, lower limbs.
What are the bones of the skull divided into Cranium and facial bones
#What are the cranium bones Frontal bone (Forehead, superior surface of orbits) Parietal bones (Sides, roof) Occipital bone (Foramen magnum) Temporal bones- includes structures of ear, acoustic canal and part of cheek bone (Sides, base) Sphenoid bone (Bridge between cranial and facial bones) Ethmoid bone (Cribriform plate (holds olfactory nerve up from nose to brain) and Nasal septum)
What is the foramen magnum Big hole in base of skull, too allow the spinal chord to go through and connect to brain.
#Functions of facial bones Support/protection of eyes,processes for muscle attachment (speaking,eating). Support nasal cavity (keep airways open), support structure of inner ear.
#Maxillary bone makes up central part of face, inner cheek, top jaw and sides of nose.
Zgomatic bone cheek bone and part of eye orbit.
Mandible lower jaw,lower arch of teeth, free moving.
Nasal bones Make up bridge of the nose.
Nasal complex filter and warm up air (top nasal conchae part of ethmoid) inferior naval conchae are own bones.
#Nasal septum Vomer
#Palatine bone bony plate, above top jaw.
Hyoid bone supports trachea,larynx and voice box. (Has a greater horn,lesser horn and main body, not directly attached/influenced by any other bone)
what are the different sinuses Frontal, Ethmoidal, Sphenoidal, Maxillary.
Coronal structure in newborns soft membrane structure between bones, allow room for bones to form at toddler age.
What is the function of the vertebral column support of head and upper body. Protection of spinal chord. Storage of calcium and blood cell production. Providing the leavaredge for movement
How many bone are there in the vertebral column 24 vertebrae, the coccyx and the sacrum
Regions of vertebrae from head to tail Cervical (7) thoracic (12) lumbar (5) (sacral,coccygeal-tail bone)
#How do you describe the curve Cervical and lumbar curve, anterially covexed
Primary curves Thoracic and Sacral
Secondary curves Cervical and lumbar
#Thoracic vertebra Body: Weightbearing, Articulate with bodies above/below, Separated by intervertebral discs. Arch: Consists of pedicle & lamina, Supports transverse & spinous processes, Surrounds vertebral foramen, (Vertebral canal). Articular processes: Articular facets, Articulate with vertebrae above/below, Spinous process, Transverse process.
what do the different regions do (different processes) such as. what does the spinous process do
Cervical vertebrae Oval body, Transverse foramina (hole which allows artery to brain), Bifid (split) spinous process.
Thoracic vertebrae Heart-shaped body, Facets for articulation with ribs (joint, facet= where joints attach), Long, inferiorly directed spinous process
Lumbar vertebrae Massive (heaviest loading), Blade-like transverse processes. Blunt sides.
What is C1 called Atlas, articulates with occipital bone. No vertebral body (as not supporting other vertebrae)
What is C2 called Axis, articulates with atlas, Has Dens (peg like bone structure sticking upwards) to allow shaking of head movement.
Sacrum structure (learn from picture) Has sacral canal (articular process, medial sacral crest and sacral hiatus) and Base (with sacral promontory, sacral foramina and apex).
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