Boise State Bio #227-Exam #4-Koob

Define spatial summation. {Ans: accumulation of neurotransmitter from several presynaptic end bulbs}Posterior (dorsal) Gray Horns {Ans: sensory part of gray matter}How is the "Node of Ranvier" helpful in regeneration? {Ans: The action potential propagated by one node of Ranvier jumps to and is regenerated at the next node along the axon, thereby enabling the action potential to travel rapidly along the fiber.}List the Cranial Nerves in order. {Ans: I. Olfactory II. Optic III. Oculomotor IV. Trochlear V. Trigeminal VI. Abducens VII. Facial VIII. Vestibulocochlear IX. Glossopharyngeal X. Vagus XI. Acessory XII. Hypoglossal}What cells make the myelin sheath in the CNS? {Ans: Oligodendrocytes}The medulla oblongata and part of the 4th ventricle are found in the what? {Ans: Myelencehpalon}