Unit_10_Skeletal_System_Elisa_GBC_1

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Unit 10 Skeletal System Elisa GBC
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  1. What is the function of bone
    • Support = Form frame work
    • Protect = Protects organ (Rib protect heart and lung)
    • Movement =  muscle attached to bone
    • Storage = minerals like calcium & phosphorus
  2. what is Hematoiesis
    Blood formation
  3. List FOUR types of bone:
    • 1. Long bone
    • 2. Short bone
    • 3. Irregular bone
    • 4. Flat bone
  4. Long bone is?
    • Longer then they are wide
    • ie - Humor and Femor bone
  5. Short bone?
    • Are shaped like cubes
    • ie - wrist and ankle
  6. Flat bone is?
    • Thin and flat
    • ie - Pelvis, sternum, skull
  7. Irregular bone
    • have many different shapes
    • ie - Vertevbre of the spine is an example
    •    - hip bone is another example
  8. Sesamoid bone
    is a bone that forms within a tendon (ie knee cap)
  9. Proximal epophysis
    Is the top of the bone and is covered w/articular cartilage
  10. Picture of Bone
  11. Where is the Diaphysis located?

    a. Middle of the bone
    b. End of bone
    c. Top of bone
    • you got it...
    • A. Middle shaft of the bone
  12. Does the PERIOSTEUM cover the interior of the bone?
    No! this is the membrane that covers the  bone
  13. where is the Medullary cavity?
    It is in the MIDDLE of the bone. (Hollow line with endosteum)
  14. Where is the DISTAL epiphysis?
    Inferior (bottom) of bone
  15. What is the epiphyseal line?
    It was cartilage at a young age but turns to bone when we stop growing
  16. Yellow bone marrow...
    Is a fatty bone marrow located in the medullary cavitiy in long bones
  17. Where is red bone marrow found?
    • It is found in flat bone
    • (ie. Skull, hip, sternum)
  18. Foramen is
    An opening (hole) in which something passes through?  (the whole in the bas of the skull)
  19. What are two main types of connective tissue?
    • 1.  Bone
    • 2. Cartilage
  20. What are two structral type of bone?
    • 1. Compact Bone = Dense, thick, compact
    • 2. Spongy Bone = Porus / wholey
  21. What is the main structure of bone?

    A. Osteon
    B. Osteoblast
    C. Ostiocytes
    A. Osteon!

    This is the heart of the bone meaning structual, functioning unit of the bone
    (this multiple choice question has been scrambled)
  22. What is another name for Osteon?
    Haversian system
  23. Lamellae is
    A SINGLE ring of bone INSIDE the osteon
  24. LACUna
    • Houses bone cells
    • (These are the spaces in between the LAMellae)
  25. Canaliculus are
    Little canals or tunnels to connect the LacUna
  26. What is the CENTRAL canal?
    The very centre of the osteon (bone) and blood travels through them
  27. What is the nature and function of cartilage?
    • Flexible
    • Strong
    • Acts like a cushion to absorb tension and shock.
  28. True or False
    Is Cartilage vascularized?
    • False!
    • Cartilage has no blood supply and is slow to heal
  29. What are cartilage cells called?
    Chondrocytes
  30. What does Endochondral Ossification mean?
    Means inside the cartilage is bone formation
  31. OSTEOBLAST
    • Building up of bone
    • To deposit calcium and form bone from inside as well as along the diaphysis (shaft) as a bone collar
  32. Osteoclast
    • Break bone down
    • Take calcium from bone and deposit into blood
  33. What is the Axial part of the body?
    • Skull
    • Scapula
    • Sternum
    • Rib
    • Vertebrea
    • Sacrum
  34. What is the appendicular part of the body?
    • hip bones
    • arms and leg
    • (anything that come off the body)
  35. How many bones are in the body
    A. 210
    B. 202
    C. 206
    D. 204
    C. 206
  36. Ethmoid bone?
    Is dorsal (behind) the eye socket
  37. Picture of Skull
  38. Occipital condles
    Flat bone that is smooth and rest agains the vertebrea
  39. Mastiod process
    Projection of bone where neck muscles attach
  40. Sinus
    Multipls sinues which are air filled cavities throughout the skull
  41. Fontanel (Elasticity / bendy)
    Is a fiborus membranse that connects cranial bones until they fuse together
  42. Nasal bone
    Small rectangular bones forming the bridge of the nose
  43. Mandible
    • Lower jaw
    • joins the temperal bones on each side if the face.
    • only free moveable joint in the skull
  44. Hyoid bone
    • Does not otuch any bone in the body
    • Is anchored by ligaments
    • Holds tongue in place and neck muscles are attached to it.
    • Located above the Larynx
  45. Maxilla
    Top part of jaw
  46. Zygomatic bone


    also know as cheek bone / malar bone
  47. Spine:
    Cervical =   1 - 7
    Thoracic =  1 - 12
    Lumbar  =  1- 5
    Sacrum  =  1 - 5
    Coccyx  =   1 - 4
  48. What is the Thorax composed of?
    • Thoracic vertebrea of spine (T1-12)
    • Ribs 1-12
    • Sternum
    • Lungs
    • Heart
    • Diapharm
    • Esophagus
    • Trachae
  49. Identify 3 different parts of the STERNUM
    M
    B
    X
    • 1. Manubrium - Superior bone shape like a square
    • 2. Body - Longest portion of the sternum
    • 3. Xiphoid Process - inferior part of sternum (shape like a sword)
  50. Sternum
  51. What are true ribs?
    • They are attached to vertebrea and directly to the sternum.
    • (Ribs 1 - 6)
  52. what are false ribs?
    • Ribs that are not attach to the sternum.
    • They attach to the cartilage to the rib above it\
    • (Ribs 7 - 10)
  53. What are floating ribs?
    Are the last two ribs that dont attach to anything (11 - 12)
  54. Picture of Thoracic Cage
  55. Scapula - is shoulder blade which helps with shoulder movement
  56. Clavical is the collar bone.
    Function is to attach sternum and scapula and forms part of shoulder joint
  57. Sternoclavicular joint is where the clavical and sterna bone meet
  58. Glenoid cavity - a shallow socket that receives head of the humerous (arm bone)
  59. Olecranon process (elbow) - is the end of the ulna (top bone) that fits into the humerous (proximal)
  60. Bones of wrist and hands
    8 wrist bones
    5 phalanges
  61. Pelvis Bone
  62. Coxal bone
    Consists of Ilium, pubis and ischium bone
  63. Ilium bone
    • Is the bone you feel when you put your hand on your hip.
    • It is the biggest, flattest part of the bone
  64. Iliac crest
    is the cruce of the hip bone
  65. Ischium
    • Bone part of the butt.
    • You can feel this bone when you sit down
  66. Pubis:
    is the front part of the coxial bone
  67. Pubis Symphysis
    is a small peice of cartilage that connects the pubis bones together
  68. Pubis Symphysis
    is a small peice of cartilage that connects the pubis bones together
  69. Pubis Symphysis
  70. Acetabulum - is where the head of the femur fits into the hip

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