ANAT 102 Lecture Notes - Lecture 4: Semicircular Canals, Vestibular System, Motility
19 Sep 2016
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Only modality coming through: somatosensory (information from skin, joints, and tendons) goes into spinal nerves. Used for smelling (olfaction = clinical term for smell) 2 nerves total that go into both sides of cerebrum. Optic chiasm: bundles of axons the x looking part that joins both optic nerves of both sides - half cross over, half on the same side. Optic tract: bundles of fibers (bottom of the x) Optic nerve: goes into cns (top of the x) Movement of eye (4 of 6 muscles that move eye) Right under optic chiasm and is right above pons. Responsible for moving eye up, down, medial by the using these muscles: superior rectus muscle - contracts and moves eye up. Medial rectus muscle - contracts and moves eye towards middle. Inferior rectus muscle - contracts and moves eye down. Inferior oblique - contracts and moves eye up and out. Movement of eye (1 of 6 muscles that move eye) o o.
