PPT-Nervous Systems Consist of Circuits or Neurons and Supporting Cells

Concept 491 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 . Structure and Function. 2. Input. (sensation). Output. (action). In order to understand behavior, we must understand the operating mechanism of the nervous system. What is the function of the nervous system?. Mr. E Murphy. Strange fact. A newborn baby's brain grows almost 3 times during the course of its first year. . Objectives. Identify the importance of the nervous system in humans. Know the difference between the CNS and the PNS. A.  Neurons = masses of nerve cells that transmit information. 1. . Cell Body. - contains the nucleus and two extensions . 2. . Dendrites. – shorter, more numerous, receive information . 3. . Axons. 15. Autonomic nervous system. is a set of pathways to and from the central nervous system (CNS) that . innervates and regulates smooth muscle, cardiac muscle, and glands. .. •. Autonomic nervous system plays a major role . Nervous system. Dr. . Makarchuk. . Iryna. The nervous system enables the body to respond to continuous changes in its external and internal environment. It controls and integrates the functional activities of the organs and organ systems. . Peripheral Nervous System. Autonomic Nervous System. Allied Health I. Central Nervous System. Communication and coordination system of the body. Seat of intellect and reasoning. Consists of the brain, spinal cord, and nerves. 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. Brain. Spinal Cord. Nerves. Vocabulary to Know . Homeostasis. The regulation of steady, life-maintaining conditions inside an organism, despite changes in its environment . Nerve Cells . Neurons. Basic functioning units of the nervous system . Chapter 11 and 12. Intro Animation. . 2. In the Biology 20 course, you studied some of the major body systems in the context of achieving homeostasis.. Homeostasis. : the process by which a constant internal environment is maintained despite changes in the environment.. THE AUTONOMIC NERVOUS SYSTEM. The autonomic nervous system (ANS) is a motor or efferent system which connects the central nervous system with all smooth muscle, cardiac muscle and gland cells of the body.. 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 . Human nervous system two major parts: central nervous system and peripheral nervous system. Nervous System Organization. Brain. Spinal cord. Central Nervous System. Nervous System Organization. All neurons outside the CNS. 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.