Physiology notes, skeletal and digestive - Skeletal system Function Skeletal system= hematopoiesis(production of red blood cells that happens in the

Physiology notes, skeletal and digestive - Skeletal system...

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Skeletal system Function Skeletal system= hematopoiesis (production of red blood cells that happens in the blood marrow), protection, mobility Bones :206 Muscles:650 Skeletal structure Axial: skull, vertebral column, rib cage, Appendicular: upper extremities, pelvis, lower extremities Cortical bone (compact bone) dense and stronger one Trabeculae Bone (spongy bone) bone marrow, red and yellow marrow is composed that is used for energy . red bone marrow hematopoietic cells generation of cells in our blood. Anatomy of the bone Three parts of a bone: epiphysis, diaphysis, and metaphysis appendicular skleton Growth plate is in the epiphyseal line in the epiphysis Bone structure Osteon is a functional unit of cortical bone Haversian canal to house blood vessels, nerves and the lymphatic system Lamellae, collagen fibers rings that provides rigidity to the compact bone Lacunae=> houses osteocytes, two types, osteoblasts, production of calcium, and osteoclasts are cells that will degrade other cells, How often do we replenish our skeletal system=> two- three months controversial? What are joints? meeting place 2 bones 1. Fibrous sutures in the skull, immovable joints 2. Cartilaginous joint = symphysis 3. Synovial movable = hyaline cartilage connection In the synovial joints they have Synovial capsule protection in the joint cavity and within the capsule there’s synovial fluid which secretes a lubricant in the movement of structures in the joint space and its strengthened by the ligaments
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Joint capsule : the fibrous capsule, continuous with the periosteum of  articulating bones, surrounds the diarthrosis and unites the articulating  bones; the joint capsule consists of two layers - (1) the outer  fibrous   membrane that may contain ligaments and (2) the inner  synovial  membrane
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  • Spring '17
  • Physiology, Bone marrow, red bone marrow, synovial fluid, Cortical bone

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