skeletal system

• what is the function of skeletal system

  protection

  support

  locomotion

  storage

  haemapoiesis

  homeostasis
• what are the 3 types of skeleton

  axial

  appendicular

  ospenis
• describe the bone tissues

  hard connective tissue
• what is the function of bone tissue

  support

  levers for locomotion
• bone tissue can remodel and repair when damaged
• what does the bone matrix contain

  osteocytes

  calcium

  phosphorus

  collagen
• what are the 2 types of bone tissue

  compact

  cancellous
• which bone tissue contains haversian canals

  compact
• where is compact bone found

  outer surface of bone
• what is the function of compact bone

  hard and dense to provide strength
• describe cancellous bone

  trabeculae= network of interconnecting bones creating mesh
• what is medullary cavity filled with

  bone marrow
• what do haversian canals contain

  blood vessels

  nerves

  lymphatic vessels
• what are lamellae

  ring of bones
• what are lacunae

  house osteoblasts between lamellae
• what are canaliculi

  interconnecting structures carrying blood vessels
• what are volkmanns canals

  interconnecting structures carrying blood vessels
• what is the function of haversian canals

  provide strength
• what tissue does bone marrow contain

  haemopoietic/ myeloid to produce red blood cells
• what colour is the bone marrow in young animals

  red
• what colour is the bone marrow in older animals and why

  yellow as its full of fat
• how do bones get a blood supply

  via nutrient artery entering nutrient forearm
• what is periosteum

  dense connective tissue covering bone except joints
• what are the layers of periosteum

  outer: vascular layer

  inner: osteoblasts + less blood vessels
• what is the function of the periosteum

  provide attachment for muscles, ligaments, tendons
• give an example of long bone

  femur
• give an example of flat bone

  scapula
• give an example of short bone

  carpal
• give an example of irregular bone

  vertebrae
• give an example of sesamoid bone

  patella
• give an example of pneumatic bone

  clavicle
• give an example of splanchnic bone

  ospenis
• what are the 2 methods of bone development

  intramembranous ossification

  endochondral ossification
• describe intramembranous ossification

  replace fibrous membrane in skull
• describe endochondral ossification

  replace hyaline cartilage with bone to develop long bone
• describe metabolic bone disease

  poor bone calcification
• what causes metabolic bone disease

  deficiency in vitamin A,C,D,K and calcium