Chapter 6: Part 3
Card Set Information
Chapter 6: Part 3
Part 3 Bones and Skeletal tissue
Compact bone on the outside is ___________ covered.
Spongy bone within is ___________ covered.
Red bone marrow is between the _____________.
marrow cavities of adults are in trabecular cavities of the ______ of the ______ & ________.
heads , femur & humerus
Red marrow in adults is also in trabecular cavities of ________ ________ of flat bones.
Red marrow of infants is in ____________ cavities and all spaces in _________ ________.
medullary , spongy bone
Osteogenic cells are stem cells in ___________ and ____________ that give rise to osteoblasts.
periosteum & endosteum
____________ are mature bone cells.
What bone cells reabsorb?
Haversian system, or ostean is a __________ _________.
Weight bearing column like matrix tube is the ____________.
Central (Haversian) canal contains _______ _________ & ________.
blood vessels & nerves
Perforating canals are ___________ canals.
Perforating canals are at _______ _______ of central canals.
What connects blood vessels and nerves of the periosteum and central canal?
Small cavities that contain osteocytes are ___________.
Lucanae are small cavities the contain ___________.
Hairlike canals that connect lacunae to each other and the central canal are ____________.
Canaliculi are hairlike substances that connect ____________ to each other and the ___________ ____________.
lacunae, central canal
_____________ alilgn along lines of stress.
Trabeculae contain irregularly arranged ___________, ____________, & __________.
lamellae, osteocytes, & canaliculi
Capillaries in endosteum supply _________.
Trabeculae have no __________.
What makes up the organic part of the bone?
Organic bone matrix secreted by osteoblasts is ____________.
Ground substances of osteoid are ___________ & ___________.
proteoglycans & glycoproteins
Collagen fibers provide _________ ______ & __________.
tensile strength & flexibility
What are hydroxypatites?
What makes up 66% of bone by mass?
Hydroxyapatites are mainly _________ __________ crystals.
What is responsible for hardness and resistance to compression?