PPT-Neurons & the Nervous System

Network of connected cells tissue and organs Controls thoughts movement life processes Quick responses Ex Sunny day pupils shrinking Eye in bright light Eye in dim light Nervous System. Central. Nervous. System. (CNS). Peripheral. Nervous. System. (PNS). 2. ". You have brains in your head.. You have feet in your shoes.. You can steer . yourself. Any direction you choose.”. . Watch video:. . chapter 29 in text. Objectives and Questions:. 1. I can describe the functions of the nervous system. 2. . I can describe the parts of a neuron cell and identify how they transmit electrochemical impulses.. Pain happens only in your head.. Anyone can be hypnotized.. Nerves don’t actually touch each other.. Not feeling pain is a good thing.. Most people can get along just fine with out senses.. You can control your nervous system.. All About Neurons. Neurons. are highly-specialized cells used by the nervous system to detect signals and transmit them to other neurons or response . effectors. (muscles or glands). Neuron Anatomy. glial. cells). Pages 227-234. Astro. cytes. Brace/anchor neurons, provide chemical barrier. Most abundant . glial. cells. Microglia. Destroy threatening particles/cells; phagocytes. Ependymal. cells. The Nervous System Central Nervous System Peripheral Nervous System Procedure A starting person will be chosen and will be given an object. Once the teacher gives the signal, the start person will pass the object to their right. 1. Two main divisions. a. . Central Nervous System . (CNS) – consists of brain and spinal cord. b. . Peripheral Nervous System . (PNS) – includes nerves extending from . brain and . spinal . cord . Brain. Spinal Cord. (also includes 4 chambers in brain called ventricles). Brain. 1) Cerebral Hemispheres. 2) Diencephalon. 3. ) Brain Stem. 4) Cerebellum. 1) Cerebral Hemispheres. Covered by ridges = . A. Central Nervous System (CNS). 1. . Functions . A) . Acts . as command center. B) . Interprets . sensory information and dictates response based on past experience, . reflexes, . and current body conditions. is the main component of the two parts of the . nervous system. ; the . brain. and . spinal cord. of the . central nervous system. (CNS), and the branching peripheral nerves of the . peripheral nervous system. System. This work is licensed under a. Creative Commons Attribution 4.0 International License. (CC-BY).. Concepts of Biology. Chapter 16: . The Nervous System. An athlete’s nervous system is hard at work during the planning and execution of . Central nervous system comprises the brain and the spinal cord with nervous tissue making up the system. This system is the most intricate system in human body.. The nervous tissue consists of rich network of billions of nerve cells in both the CNS and PNS . Today. ’. s lecture. -What are nervous systems for. -A diversity of nervous system organizations. -Information processing. -A review of neuron structure. -Resting Potential. -Action potentials. -Synapses and neurotransmitters. Concept 49.1. Mary Kathryn Pearson, Susan Sabatier, and Olivia Johnson. Simple Nervous Systems. In most animals with nervous systems, clusters of neurons perform specialized functions. . Such clustering is absent in the cnidarians, the simplest animals with nervous systems. .