4 PNS

4 PNS - Lecture 3: Mini Review The neural crest becomes...

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Unformatted text preview: Lecture 3: Mini Review The neural crest becomes part of the spinal cord during the development of the neural tube. True False  The mantle layer of the neural tube: a. contains cell bodies b. contains cellular processes c. becomes gray matter of the SC d. becomes white matter of the SC e. some sort of combo of the answers above Name 2 disorders of the neural tube and tell me which neuropore has a problem  A baby is born with fully myelinated axons. True False  The only proliferation and pruning of neurons occurs in infancy. True False Csf flows from.  A shunt a) is used for Anencephaly a) is used to drain excess csf from the brain (can take it to the peritoneal cavity or the right atrium of the heart) a) can be drained to the liver a) siphons urine away from the brain a) is often utilized when patients have hydrocephalus a) more than just one of the above Bulbar muscles: those supplied by motor nerves from the brain stem  Bulbar signs: problems with these muscles Peripheral Nervous System 1. Spinal nerves 2. Classification of peripheral nerves 3. The plexes a) Brachial plexus i. Brachial plexus injuries 1. Peripheral nerve dysfunction 2. Degeneration of peripheral nerves 3. Regeneration of peripheral nerves Includes all structures outside of the CNS  Somatic division: allows us to react to the environment  S pinal nerves  Cranial nerves  Autonomic division: maintains internal homeostasis Sympathetic Parasympathetic Mixed bundles of axons afferent, efferent, and visceral  Surrounded by connective tissue sheaths  Provide support and strength  Endoneurium:  Perineurium:  Epineurium: Dorsal and ventral roots join together to form the spinal nerve  Once nerve is outside vertebral column, the nerve...
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4 PNS - Lecture 3: Mini Review The neural crest becomes...

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