Activity 3. Exercises

COLUMBRES - ACT 3

COLUMBRES - ACT 3

by Rustana Kym Columbres -
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1. Watch this video to view a rotating and exploded skull with color-coded bones. Which bone (yellow) is centrally located and joins with most of the other bones of the skull? Access the video through this link: https://youtu.be/FrpVzSK23Q0. Take note of the parts of the skull. 

 

  • The sphenoid bone

 

2. View this video to review the two processes that give rise to the bones of the skull and body. You may also access the video thru this link: https://youtu.be/p-3PuLXp9Wg. Answer the following questions in the discussion forum in VLE. 

 

a. What are the two mechanisms by which the bones of the body are formed and which bones are formed by each mechanism? 

 

  • Intramembranous Ossification - occurs on or within fibrous connective tissue membranes

    • Flat bones of the skull, most facial bones, mandible, collarbone 

  • Endochondral Ossification - the replacement of cartilage with bone

    • All bones except for those that undergo intramembranous ossification

 

3. Watch this video thru this link: https://youtu.be/VNbrvU7MgY0, to see an animation of synovial joints in action. After watching the video, answer the following questions. 

 

a. What are the synovial joints being described in the video? 

 

  • Plane Joints

  • Hinge Joints 

  • Pivot Joints

  • Condyloid Joints

  • Saddle Joints

  • Ball and Socket Joints

 

b. Which type of synovial joint allows for the widest ranges of motion?

 

  • The ball and socket joints allow for the widest range of movements because it permits movements around three axes.