HBS1HBB Lecture Notes - Lecture 4: Central Nervous System, Somatic Nervous System, Peripheral Nervous System

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6 Aug 2018
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> sensory input sensory receptors monitor changes // external environment. > integration processing and interpreting information (within the brain) > motor output activation of structures that cause effects (effector organs) or cause a response. > made up of brain and spinal cord. > communications between the brain and different body parts occurs due to neural pathways. > a neural pathway is the name given to a chain of neurons that are involved in linking the brain to the body part it is receiving sensory information from or sending motor information to. > pathways or tracts through the cns can be ascending or descending (nc3) > neurons normally transmit impulses in one direction only (np1) Have 3 separate neurons: one in the peripheral system and two in the central system. Starts in the brain the cortex. > tract a part of the pathway that is found within the cns.

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