Skeletal System: Anatomy Chapter 6

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Presentation transcript:

Skeletal System: Anatomy Chapter 6 Movement Unit Skeletal System: Anatomy Chapter 6

Components Includes all of the bones (206 in adults). Includes the cartilage and ligaments that occur at the joints (Articulations System).

Functions Support of the entire body’s weight. Protection of the viscera. Production of blood cells (Hemopoesis) Storage of minerals and fat Allows for flexible body movement

Types of Bones Long: longer than wide (femur) Short: cube shaped L=W (talus) Flat: platelike and have broad surfaces (parietal) Irregular: varied shapes with many places for connections (vertebra) Round: circular (patella)

Long bone Anatomy Periosteum – continuous with ligaments and tendons. Area where blood vessels enter the bone. Fibrous connective tissue. Epiphysis – expanded portions at each end. Contains cancellous bone wraped in a thin layer of compact bone covered by hyaline cartilage (articular cartilage). Diaphysis – “shaft” of the bone – not solid contains the medullary cavity with yellow marrow. Compact bone wraps this cavity.

Review of Histology: Compact Bone: Osteons, osteocytes, Lacunae, Lamellae, hydroxyapatite, central or Haversian canal, canaliculi. Spongy Bone or Cancellous bone: trabeculae, red bone marrow.