BIOL 1F25 Lecture Notes - Central Nervous System, Occipital Lobe, Parietal Lobe
19 May 2013
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Document Summary
Central nervous system (cns): consists of brain and spinal cord. Peripheral nervous system (pns): nerve fibres that transmit signals between the cns and organs in other parts of the body. Fibers grouped into bundles called nerves (43 pairs of nerves) Cortex of the left and right cerebral hemisphere divided into four lobes. Frontal lobe: reason, judgement, execution of ideas, contains primary motor centre; receives and coordinates messages from other lobes; motor control, speech production. Temporal lobe: hearing, learning, language comprehension, and memory. Parietal lobe: contains primary sensory centre; receives information about pressure, pain, touch and temperature. Midbrain: helps coordinate movement patterns, sleep, and arousal. Hindbrain: made up of pons, cerebellum, and medulla. Pons: involved with respiration, movement, waking, sleeping, and dreaming. Cerebellum: coordinates fine muscle movement, balance, and some perception and cognition. Medulla: responsible for breathing, heartbeat, and other vital life functions. Hypothalamus: responsible for regulating emotions and drives (i. e. hunger, thirst, sex, aggression)
