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Skeletal System I

The Skeletal System I: Bones p. 61-65

Long Bones shaft & enlarged ends example: leg bones & arm bones
Short Bones blocky in shape & structure example: carpals & tarsals
Flat Bones flat example: cranium, ribs, clavicle, scapula, sternum, hip bones (largest; where most of our blood cells are made)
Irregular Bones others; everything else example: face bones, cheek bones, jaw, vertebra, xyphoid process
Diaphysis shaft; made mostly of compact bone
Compact Bone has a central canal with rings of cells
Medullary Cavity contains endosteum & yellow bone marrow
Yellow Bone Marrow store fats
Epiphysis mostly spongy bone
Spongy Bone more beneficial where bones are coming into contact; mostly myeloid tissue
Red Bone Marrow (myeloid tissue) makes blood cells; stem cells (unspecialized)
Periosteum fairly thick membrane o the outside of the bone
Articular Cartilage cartilage cap that we have over the epyphysis if the bone forms a joint with antoher bone
Osteons (Haversian Systems) group of cells surrounding one central canal
Haversian Canal cental canal; microscopic opening containing neurons & capillaries
Osteocyte general term for bone cells
Lacuane space where we find osteocyte
Canaliculi connects all the lacunae which all feedback to the central nervous system; delivery system
Endochondral Ossification process used to make a long bone
Endochondral process that occurs into/within cartilage
Ossification harden or become rock like; depositing of minerals
Osteoblasts bone cells that add calcium to the bone (taking from body fluids)
Primary Ossification Center area in the diaphysis where calcium is being deposited
Secondary Ossification Center at lease 2 found in the epiphysis, one for each structure found at the ends
Epiphyseal Plate growth plate; cartilage between primary & secondary centers; last areas where calcium will be deposited; once changed into bone, growing is complete
Remodeling/Repair of bones why? amount of calcium in body fluids kept in homeostasis how? osteoblasts responsible for adding & osteoclasts responsible for taking
Osteoclasts have the ability to dissolve bone and remove calcium
Functions of Bones support, protection, movement, hematopoiesis, storage
Support rigid framework to support the body
Protection lungs, brain, heart, spine surrounded by a case of bones
Movement connected in was that allow movement as well as connected to muscles which provide the force for movment
Hematopoiesis making blood cells
Storage calcium & other minerals, fat- yellow marrow
Created by: bco