HTHSCI 1H06 Lecture Notes - Lecture 13: Enkephalin, Upper Motor Neuron, Spinocerebellar Tract
29 Mar 2018
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The spinal cord expands outwards, providing information and input to the muscles through the peripheral nerves. The vertebral column appears as the division between the two systems. The components of the pns off of the spinal cord includes the: spinal nerve, dorsal ramus, and ventral ramus. What are the (2) functions of the spinal cord: processes sensory input and motor output reflexes, relays sensory information to brain and relays motor information to the pns. Information is carried to and from the pns through mixed spinal nerves. Information is carried to and from the brain through ascending sensory axon tracts and descending motor axon tracts. What are (4) levels in the vertebral canal: cervical (8), thoracic (12), lumbar (5), and sacral (5). Breakfast at 8, lunch at 12, and 2 servings of dinner at 5. The spinal cord is shorted than the vertebral canal and ends at vertebral level l2: nerve roots extend further via cauda equina.
