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Transcript
The Nervous System Chapter 2 I forgot to study for my AP Psych Quiz! The Nervous System Nervous System Central Nervous System (CNS) Peripheral Nervous System (PNS) Kinds of Neurons Sensory Neurons (a.k.a. Afferent Neurons) carry incoming information from the sense receptors to the CNS. Motor Neurons (a.k.a. Efferent Neurons) carry outgoing information from the CNS to muscles and glands. Interneurons connect the two neurons (between). Sensory/Afferent Neuron Interneuron Motor /Efferent Neuron Autonomic Nervous System (ANS) Controls glands & organs Sympathetic N.S. “Arouses” (fight-or-flight) Parasympathetic N.S. “Calms” (rest & digest) Central Nervous System The Spinal Cord and Reflexes (simple, automatic response to sensory stimuli) Simple Reflex Central Nervous System The Brain and Neural Networks Interconnected neurons form networks in the brain. Theses networks are complex and modify with growth and experience (“use it or lose it”). Complex Neural Network The Endocrine System Chapter 2 The Endocrine System The Endocrine System is the body’s “slow” chemical communication system. Communication is carried out by hormones synthesized by a set of glands. The Endocrine System • Some concepts about Hormones – Travel through the bloodstream – Some are chemically similar to neurotransmitters • Pituitary Gland = “the master gland” gets orders from the brain (hypothalamus = “the master’s master”) – Basic Feedback system: • Brain (hypothalamus) pituitary other endocrine glands hormones brain • Overall, the Endocrine and Nervous Systems constantly interact with one another
