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? The link of the video at the study guide.
The bone (in yellow) that is centrally located and joins most of the other bones of the skull was the sphenoid bone.
View another video to review the two processes that give rise to the bones of the skull and the body. The access to the video is in the study guide. Answer this question:
What are the two mechanisms by which the bones of the body are formed and which bones are formed by each mechanism?
The two mechanisms by which the bones of the body are formed are the Intramembranous Ossification & Endochondral Ossification.
The flat bones of the skull, clavicle, and the majority of the cranial bones are formed by intramembranous ossification, which transforms mesenchymal tissue directly into bone.
The axial skeleton and long bones are formed by the process of endochondral ossification, which starts with mesenchymal tissue converting into an intermediate type of cartilage that is eventually replaced by a bone.
Watch another video (link at the study guide) to see an animation of synovial joints in action. Answer the following questions after watching the video.
What are the synovial joints being described in the video?
The types of synovial joints being described in the video are the plantar joints, hinge joints, pivot joints, condyloid joints, saddle joins, and ball and socket joints.
Which type of synovial joint allows for the widest ranges of motion?
The synovial joint that allows the widest ranges of motion is the ball and socket joints. Because these joints allow for more motion, they are at greater risk for instability. Ball and socket joints allow for movement in many planes, and circumduction.