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Human Anatomy Lab Manual: Lab 2: Bones and Bone Markings

Human Anatomy Lab Manual
Lab 2: Bones and Bone Markings
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table of contents
  1. Cover
  2. Title Page
  3. Copyright
  4. Table Of Contents
  5. About the Publisher
  6. About This Project
  7. Acknowledgments
  8. Lab 1: Anatomical Language
    1. Lab 1: Anatomical Language
    2. Pre-Lab 1
    3. Lab Activities
    4. Post-Lab 1 Questions
  9. Lab 2: Bones and Bone Markings
    1. Lab 2: Bones and Bone Markings
    2. Pre-Lab 2
    3. Lab Activities
    4. Post-Lab 2 Questions
  10. Lab 3: Spinal Cord and Spinal Nerves
    1. Lab 3: Spinal Cord and Spinal Nerves
    2. Pre-Lab 3
    3. Lab Activities
    4. Post-Lab 3 Questions
  11. Lab 4: Brain and Cranial Nerves
    1. Lab 4: Brain and Cranial Nerves
    2. Pre-lab 4
    3. Lab Activities
    4. Post-Lab 4 Questions
  12. Lab 5: Special Senses
    1. Lab 5: Special Senses
    2. Pre-lab 5
    3. Lab Activities
    4. Post-Lab 5 Questions
  13. Lab 6: Respiratory System
    1. Lab 6: Respiratory System
    2. Pre-Lab 6
    3. Lab Activities
    4. Post-Lab 6 Questions
  14. Lab 7: The Cardiovascular system
    1. Lab 7: The Cardiovascular system
    2. Pre-lab 7
    3. Lab Activities
    4. Post-Lab 7 Questions
  15. Lab 8: Digestive System
    1. Lab 8: Digestive System
    2. Pre-Lab 8
    3. Lab Activities
    4. Post-Lab 8 Questions
  16. Lab 9: Urinary and Reproductive Systems
    1. Lab 9: Urinary and Reproductive Systems
    2. Pre-lab 9
    3. Lab Activities
    4. Post-Lab 9 Questions
  17. Lab 10: The Muscular and Integumentary systems
    1. Lab 10: The Muscular and Integumentary systems
    2. Pre-Lab 10
    3. Lab Activities
    4. Post-Lab 10 Questions
  18. Vocabulary
    1. Vocabulary
  19. Image Credits

Lab 2: Bones and Bone Markings

Measurable Outcomes

  • Determine if a given bone is part of the axial or appendicular skeleton.
  • Ascertain the major bones of the skull, as well as any markings or unique features, the regions of the vertebral column, parts of a typical vertebra, along with the other bones and features of the axial skeleton.
  • Identify the bones of the appendicular skeleton and their unique features.
  • Designate bones as either left or right when applicable. Examples include the ulna, humerus, femurs, scapulas, and clavicles.
  • Understand how different bones fit together and articulate. Demonstrate this by assembling different regions of the body using the bones provided.
  • Differentiate compact, spongy and dry bone histology slides. This includes identifying the unique characteristics of each.
  • Demonstrate an adequate understand of the material in this section.

Background

The skeletal system is the primary structural organ system of the body. Many people think of the skeletal system as being static in that it is unchanging, however, this is not the case. Bones, like other organ systems, have specialized cells which allow them to perform a variety of essential tasks. Osteoblast are responsible for secreting the bony matrix necessary for bone formation. Osteoclast, meanwhile, are large multinucleated cells responsible for the dissolution and reabsorption of bone.  It is made mostly of collagen, which gives bone its soft framework, and calcium phosphate which adds strength and hardness to the structure. It is divided into the axial and the appendicular skeleton. The axial skeleton consists of the skull, hyoid bone, vertebral column, sternum, and ribs. Whereas the appendicular skeleton consists of the clavicle, scapula and the rest of the upper and lower limbs. Without the foundational structure of the skeletal system, there would be nothing to support the body and provide points of attachment for muscles. Bones function to protect internal organs, assist body movements, store and release calcium and phosphorous, participate in blood cell production and store fat in the yellow marrow. Bones also function to protect internal organs, assist body movements, and the storage and release of ions such as calcium and phosphorous. Furthermore, long bones contain both hemopoietic (red) and stromal (yellow) marrow which produce red blood cells and fat cells respectively.  Each of these cells have specific functions that are key to the development and repair of a bone over time. The two types of bone tissue are compact and spongy bone. Compact bone is typically found along the perimeter of bones and makes up the majority of the diaphysis of long bones. It is stronger than spongy bone and provides more stability. Compact bone is made up of circular units called osteons. Osteons are composed of rings called lamellae that spiral down into a central canal, known as the Haversian canal. This central canal is the passage for nerves, blood vessels, and lymphatics. Spongy bone, on the other hand, is typically the deepest layer of a bone’s composition. It is made of trabeculae which give spongy bone its characteristic lighter weight. There are five classifications of bones based on their shape, long bones, short bones, flat bones, irregular bones and sesamoid bones. The shape and composition of each bone allow them to function as mentioned above.

Vocabulary for Bones and Bone Markings on page(s) 161-162.

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