Please enable JavaScript.

Coggle requires JavaScript to display documents.

Bone (Gross Anatomy (Size And Shape) (Sesamoid Bones (Development (within…

- - - - within tendons subjected to pressure
- - - - Hormones
        
        Types
        
        Decreases calcium levels in blood
        
        Calcitonin (Thyroid Gland)
        
        1
        
        Osteoclasts
        
        1 more item...
        
        Osteoblasts
        
        1 more item...
        
        2
        
        Intestine
        
        1 more item...
        
        3
        
        Kidneys
        
        1 more item...
        
        4
        
        Calcium concentration increased
        
        Increase calcium levels in blood
        
        Parathyroid Hormone
        
        Effects
        
        1
        
        1 more item...
        
        2
        
        1 more item...
        
        3
        
        1 more item...
        
        4
        
        1 more item...
        
        Target areas
        
        Bones (storage)
        
        Digestive system (Absorption)
        
        Kidneys (Secretion)
  - - - Synarthrosis
        
        Type of articulation
        
        Immovable joint
        
        Composition
        
        Fibrous
        
        Cartilaginous
        
        Bony Fusion
        
        Examples
        
        Bones of the skull
        
        Teeth and Jaw
        
        Epiphyseal cartilages
      - Amphiarthrosis
        
        Type of articulation
        
        Slightly movable joint
        
        Composition
        
        Fibrous
        
        Cartilaginous
        
        Examples
        
        Between Tibia and Fibula
        
        Between Pubic Bones
      - Diarthrosis
        
        Type of Joint
        
        Freely movable Joint
        
        Examples
        
        Synovial Joints
        
        Gliding
        
        Hinge
        
        Pivot
        
        Ellipsoid (Condyloid)
        
        Saddle
- - - - Definition
        
        Replacing other tissue with bone (e.g. Cartilage)
      - Types
        
        Endochondral
        
        Bone replaces existing cartilage
        
        Most bones begin as hyaline cartilage templates which are then ossified
        
        Steps
        
        1
        
        Chondrocytes increase in size
        
        Matrix is reduced and calcified
        
        Chondrocytes die
        
        2.
        
        Blood vessels grow into perichondrium
        
        Mesenchymal cells differentiate into osteoblasts
        
        Layer of bone surrounds shaft
        
        3.
        
        Blood supply to centre
        
        Fibrobalsts differentiate into osteoblasts and spongy bone
        
        Primary ossification centre
        
        Bone spreads to ends
        
        4.
        
        Osteoclasts create medullary cavity
        
        Increase in length and diameter
        
        5.
        
        Blood supply to epiphyses
        
        Secondary ossification centres
        
        6.
        
        Epiphysis becomes filled with spongy bone
        
        Some cartilage remains (Articular cartilage)
        
        Epiphyseal plate forms
        
        Intramembranos
        
        Bone develops from mesenchymal cells (stemcells)
    - - Definition
        
        Process of bone formation
    - - Definition
        
        Deposition of calcium salts
  - - - Epiphyseal side
        
        new cartilage continuously
      - Shaft side
        
        Osteoblasts invade cartilage and ossify it
  - - - Osteoblasts
        
        Location
        
        Inner layer of periosteum
        
        Function
        
        Deposit bone matrix
        
        Osteoblasts become surrounded in matrix
        
        differentiate into osteocytes
    - - Location
        
        Layers of circumferential lamellae
      - Happens
        
        Deepest layers become replaced with osteons
        
        Osteoclasts
        
        remove matrix and inner surface
        
        Medullary cavity
        
        enlarges with increased diametre
- - - - Location
        
        Surround Central Canal
      - Function
        
        Acts as the bones matrix
        
        contains
        
        Lacunae (Cavity)
        
        Location
        
        Exists within the Lamellae
        
        Function
        
        Contains
        
        Osteocytes
        
        2 more items...
    - - Function
        
        contains all major blood vessels that...
        
        remove of wastes
        
        supply nutrients
      - Location
        
        Centre of osteon
    - - Location
        
        Radiating away from Lucunae within the Lamellae
      - Function
        
        Acts as small passages for diffusion of nutrients, ETC.
    - - Collagen fibres run irregularly
    - - Location
        
        Run perpendicular to bone surface
      - Function
        
        Contain blood vessels
  - - - canaliculi :check:
        
        Function
        
        Provide nutrients to Osteocyres
      - Osteocytes :check:
      - osteons :red_cross:
        
        lined in Trabeculae :check:
      - Central Canal :red_cross:
      - Bone marrow
        
        Location
        
        surrounds Trabeculae
        
        Function
        
        Contains
        
        Blood vessels that supply nutrients to spongy bone
- - - - Add matrix reduce activity
    - - Remove matrix
      - Continue same level of activity