Skeletal System

  1. What is the endoskeleton?
    • Provides internal support for the entire body
    • Protects internal organs
  2. What tissues does the skeletal system consist of?
    • Bone
    • Cartilage
    • Ligament
    • Bone marrow
    • Bone membranes
  3. Movement-
    • Tendons- muscle to bone
    • Ligaments- bone to bone
  4. Where is Red bone marrow found in the body?
    • Infants- found in the medullary cavity of long bones and all areas of spongy bone
    • Adults- found in the spongy bone of flat bones, and the head of the femur and humerous
  5. What are they two types of bone?
    • Cortical- strong, provides leverage for body movement, and structural support for organ's
    • Cancellous- lacks strength and mineral density- spongy structure allows for flexibility and shock absorption against mechanical load.

    Cancellous bone has an increased surface area, increased metabolic activatey and ca2+ ion exchange
  6. Bone Types
    • Long bone- contains compact bone and spongy bone.¬†
    • Short bone- contains mostly spongy bone
    • Flat bone- contains thin layers of compact bone
    • Irregular bone- e.g. coccyx
  7. What cartilage is found in the skeletal system?
    Articular cartilage.
  8. 2 processes involved with ossification
    • 1. Endochondrial ossification- cartilage to bone
    • 2. Intramembraneous ossification- connective tissue- matrix- calcified bone
  9. What is wolf's law?
    • A bone grows or remodels in response to the forces or demands placed upon it.
    • Is used in orthodontic treatment, when the bone is remodelled/remoulded by placing stress or pressure on the bone. the bone is resorbed by osteoclasts and the formation of bone from osteoblasts.
    • Takes 3-4 months for new bone to reform and calcify.
Card Set
Skeletal System
Skeletal System