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Skeletal System

Skeletal System. Support, Attachment, Protection, Movement, Storage, Diseases. How many Bones do we have?. Average adult has 206 Bones Average baby has approximately 300 bones! (Say Whaaaaaaaaa ?!) Bones are not fully formed/fused until sometime between 13 and 18 years old.

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Skeletal System

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  1. Skeletal System Support, Attachment, Protection, Movement, Storage, Diseases

  2. How many Bones do we have? • Average adult has 206 Bones • Average baby has approximately 300 bones! • (Say Whaaaaaaaaa?!) • Bones are not fully formed/fused until sometime between 13 and 18 years old

  3. INCREDIBLE BONES!!! (I wish this slide design had lowercase letters so I could capitalize “incredible bones.” • Auditory Ossicles: malleus, incus, stapes • Ethmoid Bone: Specifically the Cribriform Plate • Largest Bone: Femur • Smallest Bone: Stapes (stirrup) • Pass around example • Regeneribs! Periosteum intact, osteoblastspropogatee • Hyoid Bone: • Floating Ribs:

  4. Da Bones How did I get peer-pressured into swallowing this giant bone?!

  5. Dem’ bones, dem’ bones gonna walk around. • ~20% of total body weight • 6 main functions of our endoskeleton • Support: shape/framework (framing of a building) • Attachment: muscles, tendons and ligaments • Movement: leverage for skeletal muscles • Protection: Protects our guts (brain, cord, heart, etc) • Blood Cell Production: Hematopoeisis (red marrow) • Storage: Mineral storage (esp. Ca+)

  6. Organization of le’ skeleton • Axial Skeleton (80) • Skull • Ossicles (malleus, incus, stapes) • Hyoid Bone • Vertebral column • Chest • Appendicular Skeleton (126) • Shoulder girdle • Arms/Hands • Pelvic Girdle • Legs/Feets BAHAHA! “feets”

  7. Skull (a.k.a. Cranium) • Parts you gotta know! • Frontal • Temporal • Zygomatic • Ethmoid • Mandible • Maxilla • Sphenoid • Parietal • Lagrimal • Nasal • Occipital

  8. Vertebral Column • Types of Vertebrae • Cervical • Thoracic • Lumbar • Sacral

  9. We’re all created equal . . . . jk. • Males = Awesome • Thicker/Longer limbs • Longer digital bones • Brow Ridge • Pelvic Girdle • Females = Weak Sauce • Narrower rib cages • Smaller Teeth • Less angular mandibles • Less pronounced cranial features

  10. Diseases • Bone Cancer • Bone Tumors • Arthritis • Osteoporosis • OsteogenesisImperfecta • Fracture • Simple • Compound Shoulda had a V8

  11. The Infamous Teratogen! • Thalidomide: • Pros: Cures Morning Sickness in Pregnant women. • Cons: Prevents the development of long bones (i.e. arm and leg bones don’t extend)

  12. Homology

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