Skeletal System

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Skeletal System
2013-10-17 23:53:19
Basic Anatomy Physiology

bones, and their functions
Show Answers:

  1. What are the functions of bone?
    support, protect, assist in movement (bones and muscles), mineral homeostosis (storing minerals. BLOOD CELL PRODUCTION, produces of red blood cell and pallets --> hemopoiesis in red bone marrow. stores triglyceride storage -yellow bone marrow
  2. Types of bones give an example of each
    • long bones: femur
    • short bones: wrist
    • flat bones skull
    • irregular bones; vertabrae, facial bones
  3. what are the parts of the long bone?
    • diaphsis:
    • epiphysis
    • metaphysis
    • articular cartilage
    • periosteum
    • medullary cavity
    • endosteum
  4. Osteogenic cell are what and found where?
    unspecialized found along the periosteum
  5. Osteoblasts
    Osteogenic converts into osteoblasts. they also undergo cell division and only surround with extracellular matrix
  6. Osteocytes do what?
    maintain the bone
  7. Osteoclasts
    break down the bone
  8. Central canal:
    goes through center of osteon contains blood vessels, nerves, and lymphatics
  9. Concentric lamellae
    are layers of matrix
  10. Lacunae "lakes"
    contains osteocyctes bone cells
  11. Canaticuli
    contain extensions of osteocytes
  12. Trabiculaes are what?
    are the ridges located in the spongy bones
  13. what does the space between the trabaculae contain?
    red bone marrow
  14. Spongy bone is lighter than compact bone because
    reduces weight o skeleton
  15. Bone formation is known as
  16. What happens during bone formation?
    inital bone develops in embyro, growth continues during adulthood and will continue to repair and remodel replace of old bone
  17. Two ways we make bone?
    Intramembranous, endochondrial
  18. What way of bone making is the most common
  19. Growth and length
    Occur where
    • on the epiphyseal side of the epitheal plate
    • chondrocytes divide and grow more cartilage
  20. Epipheseal
    is calcified cartilage that later becomes bone
  21. what happens to the thickness of bones as the grow in length
    they also grow thickness
  22. Remodeling and Repair occurs through what
    • resoprtion by osteoclasts
    • deposistion by osteoblasts
  23. which process put calcium back in the blood vessels?
    resorption by osteoclasts
  24. what process put calcium in the bone?
    deposition by osteblasts
  25. Types of Fractures
    Closed and Open
  26. Closed fractures
    simple not through skin
  27. Open fractures
    compund broken ends break through skin
  28. Parital fractures
    incomplete break
  29. complete
    bone broken in 2 pieces or more
  30. What 2 process regulate Calcium homeostasis
    Parathyroid hormone, and Caleitonin
  31. Parayhyroid horomes does what?
    increases osteoclast activity
  32. What are soft spots called?
  33. what helps with our voice
    paranasal sinuses
  34. What are the sutures in our skull
    coronal, sagittal, lambodial, squamos
  35. The purpose of the Vertebrae
    inclose spine cord protect, support the head, point of attachment for muscles of back ribs and pelvic griddle
  36. what is the purpose of the  4 curves
    streengthen to absorb shocks
  37. scaphoid, lunate, triquetrum, pisiform, trapezium, trapizoid, capate, hamate
    bones of the wrist and hand
  38. how many bones are in cervical, thoracic and lumbar curves
    7, 12, 5
  39. Anything above the pelvic brim is
  40. Anything below the pelvic brim is
  41. 3 bones of hip bone
    illium, ischium, pubis,
  42. Acetabulum is what
    where femur joins hip bone
  43. which bone is the biggest in the body
  44. Heal bone is also known as
  45. what connects the fibula and tibia
  46. cuboid, navicular, 3,2,1 cuneiform are part of what
  47. What has the largest body in the tharacic area