PSYB65H3 Chapter Notes - Chapter 2: Somatic Nervous System, Phenotypic Plasticity, Peripheral Nervous System
Document Summary
Chapter 2 how does the nervous system function. Dogs have good hearing to hear mice in the grass, humans can see colour to see the ripe fruit: evolution fosters adaptability which equips each species with a view of the world that will help it survive. 1- cns includes the brain and spinal cord structures at core that mediate behaviour. 2 somatic nervous system spinal and cranial nerves carrying sensory info to the cns from the muscles also transmits outgoing motor instructions that produce movement. 3 autonomic nervous system balances internal organs to rest and digest (parasympathetic nerves) and fight/flee (sympathetic nerves: afferent to the cns. Trigger a sensory signals: efferent from the cns to another organ. Cerebral security: first thing you uncover is the tough, triple-layered, protective covering meninges. Mycelencephaon (spinal brain) medulla and the spinal cord behaviours are the product of many parts of the brain each adding another dimension to the behaviour octopuses can learn too.
