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Lecture 6

PNB 2264 Lecture Notes - Lecture 6: Zygomatic Bone, Spinal Stenosis, Xiphoid Process


Department
Physiology and Neurobiology
Course Code
PNB 2264
Professor
crivello
Lecture
6

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Appreciate the following
- The shape and structure of bones are dependent on
o Muscle activity
o Hormonal factors
o Age
- Bones are not static structure they change as you change
- You can predict what a person does, age/sex/damage and disease by looking at bones
Skeleton
- Collection of variable number of bones
- 300 in babies and 206 as adults
- maximal bone mass/density is best at our point in life
Sex differences
- male heavier skeleton, more angular skull
- female pelvis is wider and shallower with enlarged pelvic outlet
o men have a more circular, narrower and heart shaped
Anatomical terms
- bumps
o eminence, process, tubercle, tuberosity, trochanter
- cavity
o canal, foramen, fossa, fovea, labyrinth, sinus, meatus
- ridge
o crest, line, spine, ramus
- articular process
o projection that contacts adjacent bone
condyle, facet
Axial skeleton
- long axis of body
- skull
o protection, movement
o only lower jaw moves
- hyoid bone
o attachment for tongue, connects to no other bone
- vertebral column
o protection, movement, form
- thoracic cage
o protection, movement, form
- upright posture
o transmits head, trunk and arm weight to legs through hips
- movement
o jaws, neck, lungs, back
- protection
o brain and spinal cord, heart, lungs, major blood vessels
Skull
- protection
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