skeletal system terms by Malaisha Patton

1. skeletal system

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made of organs called bones. adult humans have 206 bones

2. diaphysis

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the long shaft of the bone

3. epiphysis

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two ends of the bone

4. medullary canal

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a cavity in the diaphysis filled with yellow marrow

5. yellow marrow

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storage area for fat cells

6. endosteum

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membrane that keeps yellow marrow in tact

7. red marrow

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produces red blood cells

8. periosteum

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tough membrane that covers bone

9. axial skeleton

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forms the main trunk of the body (skull, spinal column, ribs, and breastbone

10. appendicular skeleton

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forms the extremities

11. cranium

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surrounds and protects brain

12. fontanels

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"soft spots" allows for the enlargement of the skull as the brain grows

13. sutures

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areas where cranial bones have joined together

14. sinuses

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air spaces in the bones of the skull

15. foramina

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openings in bones that allow nerves and blood vessels to enter and exit

16. vertebrae

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bones in the spinal column

17. sternum

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last bone of axial skeleton

18. clavicles

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collarbones

19. scapulas

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shoulder bones

20. humerus

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upper arm bone

21. radius

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lower arm on thumb side

22. ulna

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larger lower arm bone

23. carpals

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wrist

24. metacarpals

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palm of hand

25. phalanges

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fingers and toes

26. os coxae

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hip bones

27. ribs

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protect lungs / costae

28. femur

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thigh bone

29. tibia

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shin bone

30. fibula

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smaller bone attached to tibia

31. tarsals

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ankles

32. metatarsals

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instep of foot

33. joints

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where 2 or more bones join together

34. ligaments

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help hold long bones together at joints

35. patella

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kneecap