Structure Of A Skeleton Flashcards
Functions of the skeleton
Protection - vital organs
Movement - levers
Storage - essential minerals
Support
Red blood cell formation - in bone borrow
Compact Bone
- Strong
- Good at transmitting force in one direction
Cancellous (Trabecula)
- Light and spongy
- Resists and channels force from multipule directions
Long Bones
- Longer then they are wide
- Composed of wider epiphysis and longer narrower diaphysis
- Act as levers for movement
- Compact Bone in diaphysis
- Mostly limb bones
Short Bones
- equalish width and length (all square and rounded)
- weight baring (from multiple directions)
- mostly cancellous bones
- E.g Carpals and Tarsals
Flat Bones
- protection (skull + sternum) and muscle attachment (scapula)
- thin plates of compact bone (some cancellous too)
Axial Skeleton
- Bones of the core ; skull sternum, ribs, vertebral column, sacrum, coccyx
- PROTECTION OF VITAL ORGANS
The Vertebral Column + divisions
- keeps trunk upright / supports head
- lots of muscle / ligament attachments
Cervical: 7: cereal at 7am // BREAKFAST
Thoracic: 12: Tuna at 12 pm // LUNCH
Lumbar: 5: Lollies at 5pm // DINNER
HAND PARTS
Phalanges
Hand is higher up hence the 8 - not 7….
8 carpals : Carpool at 8am
5 metacarpals : meta ups w yo mates at 5
14 phalanges : right at the end of the hand - end of the night 2am and you’re FUCKED
Pectoral Girdle:
Pelvic Girdle:
- Clavicle - Stabalising structure
- Scapula - Free moving Muscle attachments
- 2 hip bones + sacrum - weight bearing
Parts of the hip bone + gap thing:
Ilium
Pubis
Ischium
Pubic symphysis
Axial vs Appendicular
Axial is protection - flat bones
Appendicular is movement - flat bones
Rib cage is made up of:
Ribs
Sternum
Homeostasis
The maintenance of ‘normal’ set points of bodily functions
Pelvis =
Hip bones
Sacrum
