BIOL 207 Chapter Notes - Chapter 7: Sagittal Plane, Synovial Joint, Flat Bone
13 Nov 2016
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Document Summary
Muscles"s orgin and insertions are atached to bones. Muscles origin attached to immovable (less movable) bone. Body movement happens when muscle contract across joints and insertion move toward bones. Ranges of motion allowed by synovial joints are nonaxial movement to uniaxial movement to biaxial movement to multiaxial movement. Multiaxial movement movement in or around all three planes. Gliding- occurs when one flat bone surface glides/ slips over another bone. Gliding occurs at intercarpal and interstitial joints + between flat articular processes of vertebrae. Angular movements- increase/decrease angle between 2 bones adduction, and circumduction. Occur in any body plane + include flexion, extension, hyperextension, abduction, Bending movement along sagittal plane, decreases joint angle and brings the. Occurs in bending head toward chest and raising arm to shoulder. Extension- reverse of flexion, occurs at same joints straightens flexed limb / body part. Movement at sagittal angle that increase angle between articulation bones and.
