Brain Stem, Cerebellum, Diencephalon
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Brain Stem, Cerebellum, Diencephalon. Ch. 14-2. Brain Stem. Three components Medulla oblongata Pons midbrain. Brain Stem. Medulla Oblongata Where tracts cross so that the sides of the brain control opposite sides of the body FUNCTIONS
Brain Stem, Cerebellum, Diencephalon
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Brain Stem, Cerebellum, Diencephalon Ch. 14-2
Brain Stem • Three components • Medulla oblongata • Pons • midbrain
Brain Stem • Medulla Oblongata • Where tracts cross so that the sides of the brain control opposite sides of the body • FUNCTIONS • Controls rate and force of heartbeat and diameter of blood vessels • Adjusts rhythm of breathing • Controls reflexes for coughing, vomiting, swallowing, hiccupping, and sneezing
Brain Stem • Midbrain • FUNCTIONS • Control eye movements • Reflex center for eye, head, and neck movements for “startle reflex” • Neurons here help control subconscious muscle activities • This is damaged in Parkinson’s disease • Pons • FUNCTION: Helps control breathing
Cerebellum • 2nd largest part of brain • Inferior and posterior portion • FUNCTIONS • Evaluates how well movements are being carried out • Regulates posture and balance • May be involved in cognition and language processing
Diencephalon • Thalamus • Relays sensory info, perceives touch, pain, temp, etc. • Hypothalamus • Integrates ANS and pituitary gland • Regulates emotional and behavioral patterns, circadian rhythms • Controls body temp., eating, drinking • Epithalamus • Secretes melatonin – controls sleep/wake cycle