PPT-Action Potential

65 Nerves Hormones and Homeostasis How do neurons communicate and relay information httpwwwpennmedicineorgencyclopediaemDisplayAnimationaspxgcid000089ampptid17 Action Potential 1900 Julius Berstein suggested that nerve impulses were an electrochemical message created by the movement of ions through the nerve cell membrane. Learning Objectives. To understand how an action potential is propagated along an axon.. To understand the difference between the propagation of action potentials in . myelinated . and . unmyelinated. ANSWER: via the endocrine and nervous systems. Why is it important for us to understand how cellular . c. ommunication works?. The Nervous . S. ystem: Parts & Pieces. Two cell types in the NS: 10% Neurons & 90% . . By Dr. . Vani. Gupta. 2. “Polarity” . of the . membrane. Na. +. K. +. Mg. 2+. Ca. 2+. H. +. HCO. 3. -. Cl. -. SO. 4. 2-. PO. 3. -. protein. inside. (in mM). 14. 140. 0.5. 10. -4. (pH 7.2). 10. Learning Objective. Be able to describe what a synapse is.. Be able to describe how an action potential causes the activation of synapses.. Be able to explain how signals cross the synapse.. A synapse is the point where neurons connect together.. Ch. 48-50. Introducing…..your best friend, the Neuron. Neuron = basic structural unit. Cell body (soma. ): . contains nucleus & organelles. Dendrite: . receives stimuli. Axon: . sends nerve . impulses. action . potential. Prepare: . Bring voltmeter and batteries. Nice 3D visualization of neurons: . https://youtu.be/Zqtng0AfHFY. Electric eel video: . http://www.cnn.com/videos/us/2016/06/07/electric-eel-discovery-vanderbilt-university-vstan-orig-bpb.cnn. And how this relates to the beating of your heart. Outline. The story of an action potential. Digression: Heartbeats and action potentials. Ion Channels. Three stages:. Polarization (and resting state). Overview. Updated: 26 April 2016. 1. What is a Corrective Action Board?. A Corrective Action Board or CAB is the . forum . to communicate, enable, facilitate, and provide oversight and direction for preventive and corrective action activities in order to resolve issues, support improved service and/or product quality, and promote Customer satisfaction. . Conveys information over long distances. Cytosol has negative charge relative to extracellular space. Neural code - frequency and pattern. Action potential. Spike. Nerve impulse. Discharge . Properties of the Action Potential. OBJECTIVES. Define. . the action potential.. Describe. the . changes. . during action potential.. Discuss . conduction. (propagation) of action potential. Describe . recording . of . monophasic. Packet #20. Chapter #49. Structure of the Eye. The Retina. Contains two types of photoreceptors. Rods. Black and white vision. Cones. Color vision. These photoreceptors connect to a series of neurons that ultimately lead to the optic nerve which ultimately leads to the brain.. HONORS ANATOMY & PHYSIOLOGY. Key terms. action potential. : A short-term change in the electrical potential that travels along a cell (such as a nerve or muscle fiber); the basis of neural communication. Dr.Viral. I. Champaneri. , MD. Assistant Professor. Department of Physiology. 1. Learning Objectives. Stages of Action Potential . Repolarization. Positive . afterpotential. After . hyperpolarization. Energy associated with forces that depend on the position or configuration of a body. Objects acquire potential energy when work is done on it. As an object loses potential energy, it can do work. Potential energy is the capacity to do work even if not doing work yet.