BIOL 031 Lecture Notes - Lecture 9: Efferent Nerve Fiber, Medulla Oblongata, Epithalamus
17 Sep 2020
School
Department
Course
Professor
Document Summary
Define ganglia, nuclei, and tract, as they apply to the nervous system. Ganglion: generally reserved for cluster of neuron cell bodies outside cns. Tract: large, myelinated nerve fiver bundle in cns. Describe the general organization of the brain, and know the general functions of the six brain regions: cerebrum, diencephalon (thalamus and hypothalamus), limbic system, cerebellum, and brainstem. Functions: perception, generation of skilled movements, reasoning, learning, memory. Cerebral cortex: highly-folded gray matter (primarily cell bodies) Basal nuclei (ganglia): gray matter; posture and movement control. Homeostatic control center: master command center for autonomic and endocrine control. Contains pineal gland: plays role in biological rhythms. Centers for cardiovascular control, respiratory control, swallowing, vomiting. Pons: large area of the brainstem containing many axons. Medulla oblongata: part of the brainstem closest to the spinal cord; controls many vegetative functions such as breathing and heart rate. Cerebellum: important for coordinating movements, controlling posture and balance. Differentiate between white matter (axons) and gray matter (cell bodies)
