1 preservation of the fitness of the internal environment 2 up down regulation by tonic control 3 antagonistic control and 4 chemical signals with different effects in different tissues. Read the notes under each slide for extra information.
Autonomic nervous system control over the ans is for the most part involuntary has a chain of twomotor neurons 1.
Ans nervous system ppt. The autonomic nervous system consists of two large divisions figure 1. View chapter 14 autonomic nervous system ppt from anatomy an 101 at quinnipiac university. Somatic motor system to skeletal muscles one motor neuron extends from the cns to skeletal muscle axons are well myelinated conduct impulses rapidly by contrast the visceral motor system.
Central nervous system the nervous system with the endocrine system controls and coordinates various functions of the body. Chapter 15 the autonomic nervous system ppt. The two divisions are defined by their anatomic origin rather than by their physiological characteristics.
Chapter 15 the autonomic nervous system ans controls many homeostatic mechanisms such as heart rate blood pressure respiration pupils digestion. Regulation occurs without conscious control i e autonomously. Autonomic nervous system testing ans the autonomic nervous system ans regulates physiologic processes such as blood pressure heart rate body temperature digestion metabolism fluid and electrolyte balance sweating urination defecation sexual response and other processes.
A presentation introducing the key points about the nervous system for gcse biology designed with aqa b1 in mind. Autonomic nervous system the autonomic nervous system is involved in a complex of reflex activities which depend on sensory input to the brain or spinal cord and on motor output. Ebilsky une edu powerpoint ppt presentation free to view.
Department of pharmacology university of new england phone 283 0170 x2707 e mail. Introduction to the autonomic nervous system introduction to the autonomic nervous system ed bilsky ph d. Includes images of neurones synapses the reflex arc and more.
Autonomic nervous system ppt 1. The sympathetic and parasympathetic branches of the autonomic nervous system display all four of walter cannon s properties of homeostasis. Autonomic nervous system chapter 14 central nervous system cns peripheral nervous system pns sensory.
System but will be discussed in the final lecture. Autonomic nervous system by dr. Olatunji lecturer physiology department 2.
Sympathetic thoracolumbar outflow and parasympathetic craniosacral outflow. The majority of the organs of the body are supplied by both sympathetic and parasympathetic nerves which have opposite effects that are finely balanced to ensure the optimum functioning of the organ.