'Depolarization' diaporamas de présentation

Electrocardiography

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Neurons

Neurons. A nerve cell capable of generating and transmitting electrical signals Vary in structure and properties Use the same basic mechanisms to send signals Generate action potentials or passive potential

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Arrhythmia (I): Basic mechanism and pharmacology

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WINDSOR UNIVERSITY SCHOOL OF MEDICINE

WINDSOR UNIVERSITY SCHOOL OF MEDICINE . Cardio Vascular Physiology Dr.Vishal Surender.MD. objectives. Overview of the cardiovascular system Cardiac muscle and the heart The heart as a pump Intrinsic Conduction System Excitation-contraction coupling and relaxation in cardiac muscle.

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The Nervous System

The Nervous System. Synapse. Signal Transmission Down the Axon. s. A series of . Depolarization. Repolarization. Hyperpolarization. s. A series of .

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Nervous System

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Cardiac Monitoring Skills

Cardiac Monitoring Skills. NRSG450. Module One. Goals. Student Will Be Able To Discuss Cardiac Monitoring And Correctly Place Chest Leads. Student Will Be Able To Interpret A Rhythm Strip For Cardiac Rate, Wave Morphology, Direction, Duration And Relationships To Other Waves.

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Computer Simulation of Neurophysiology

Computer Simulation of Neurophysiology. Presented in Lab. Computer Simulation of Neurophysiology. Action Potential Stimulation Determine threshold Observe effects of other stimuli Effects of Drugs Determination of Conduction Velocity. Action Potential Generation: Stimulus.

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Resting ECG

Resting ECG. An overview. Electrocardiogram (ECG). Graphic recording of the electrical activity (impulses) generated by the heart Placement of electrodes on the body will allow for detection of these impulses. ECG.

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MEMBRANE POTENTIAL

??? ???? ?????? ??????. MEMBRANE POTENTIAL . Prepared by Dr.Mohammed Sharique Ahmed Quadri Assistant prof. Physiology Al Maarefa College. Objectives. Define Membrane Potential ? Describe the electrical potential across the cell membrane. Explain the Resting Membrane and its cause

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Skeletal Muscle Physiology

Skeletal Muscle Physiology. How do contractions occur? Remember that muscles are excitable. Electrochemical gradient. Both neurons and muscle cells maintain electrochemical gradients across their plasma membranes Intracellular fluid is negatively charged. 2 Electrochemical gradients.

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Baseball

Baseball. The Muscular System. What role does ATP play in muscle contraction? Answer: it is the source of energy for the sliding filaments. Which muscle allows you to wrinkle your forehead? Answer: frontalis. Questions:. What structures connect muscles to bone? Answer: tendons.

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Cardiovascular System

Cardiovascular System. Week 10 Dr. Walid Daoud A. Professor. Cardiovascular System ____________________________________________________________________________________________________________________________________________. Functions: 1-Supplies O 2 , hormones & nutrients to cells.

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Lab Ex. 42 & 43 The Cardiac Cycle

Lab Ex. 42 & 43 The Cardiac Cycle. Cardiac Conduction System. Sinoatrial (SA) node. Atrioventricular (AV) node. Antrioventricular (AV) Bundle (Bundle of His). Left bundle branch. Right bundle branch. Purkinje Fiber. EKG = ECG = electrocardiogram. P wave (atrial depolarization).

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Cardiovascular System

Cardiovascular System. Week 9 Dr. Walid Daoud A. Professor. Cardiovascular System ____________________________________________________________________________________________________________________________________________. Functions: 1-Supplies O 2 , hormones & nutrients to cells.

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The Cardiac Cycle

The Cardiac Cycle. Cardiac Conduction System. Sinoatrial (SA) node. Atrioventricular (AV) node. Antrioventricular (AV) Bundle (Bundle of His). Right bundle branch. Left bundle branch. Purkinje Fibers. EKG = ECG = electrocardiogram. Leads (limb leads). P wave. Atrial Depolarization.

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Muscle Contractions

Muscle Contractions. Goal: . I will be able to explain how electrochemical impulses are brought to my skeletal muscles. Electrochemical Impulses. Electrochemical impulses are sent from the Central Nervous System (brain and spinal cord) to muscles causing contractions called a muscle twitch .

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Cardiovascular System p. 347-352

Cardiovascular System p. 347-352. Heart Actions. Cardiac Cycle. One complete heartbeat Atrial contraction, ventricular relaxation Atrial relaxation, ventricular contraction Pressure within heart Rises and falls as chambers fill and empty Atrial or Ventricular Contraction

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Las Vegas, NV 4-Dec-10

Las Vegas, NV 4-Dec-10. The Benefits of Tight Contact Spacing: Computational Model on Avoiding Stimulation Gaps. Emarit Ranu MSEE MSBS, Ewan Gillespie MBA, Kerry Bradley MS Boston Scientific Neuromodulation Valencia, CA USA. Activating Function: Contact Distance. (mV/cm 2 ).

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