Brooke Arrington A Case of Spinal Cord Injury Questions 1-4 By David F. Dean, Department of Biology, Spring Hill College 1. Describe the functional anatomy of spinal cord using the following terms: white matter, gray matter, tracts, roots, and spinal nerves. The spinal cord contains white matter, gray matter, tracts, roots, and spinal nerves. White matter consists of bundles of nerve fibers called axons. They run up and down the length of the spina cord, allowing different levels of the CNS to communicate. The bundles of fibers connected to the CNS are called tracts. Grey matter contains neural cell bodies. It consists of mostly myelinated axon tracts, the bundles of fibers that connect to the CNS. In the spinal cord, roots receive information sent by neurons. Motor and sensory neurons of the spinal cord allow the spinal cord to communicate with the rest of the body. 2. Define the terms reflex and spinal reflex and identify the components of a reflex arc.
- Fall '16
- functional anatomy of spinal cord