reflex arc‚ study the time taken between a stimulus and a response‚ how the spinal cord and peripheral nerves function‚ and how to measure and record response time related to a stimulus using the Labscribe software. For the second part of the lab‚ electromyograms will be triggered and recorded in order to study the Achilles and patellar stretch reflex and the reflex arc. Also‚ to understand nerve conduction velocity‚ EMG‚ and motor control. 2. The objectives of the first part of this lab is to
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Introduction The specialty of the Ear‚ Nose and Throat (ENT) system is relatively young compared to certain medical practices. Even to function as a unified discipline‚ pioneers of the specialty had to wage a protracted struggle to surmount considerable hindrances. Initially confined to managing ear infections alone‚ the introduction of surgical intervention skills gradually led the specialty to adapt a unified approach. Furthermore‚ with improved technological advances‚ the specialty’s horizon
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Session 9: The Nervous System - Assignment #2 PhysioEx Assignment : Exercise 3 Neurophysiology of Nerve Impulses Activity 1: The Resting Membrane Potential 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Increasing the extracellular K+ causes the membrane potential to change to a less negative value because when K+ ions diffuse out across the membrane they are leaving behind a net negative charge. 2. Explain
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position/posture‚ generates heat 2. Location: on top of/attached to bones (skeletal) AND in certain organs (smooth) 3. Organs: skeletal muscles and smooth muscle‚ tendons and ligaments Nervous System: 1. Function: generates Action Potentials (nerve impulses)‚ regulates body activities‚ detects changes in body chemistry/internal and external environment‚ interprets changes‚ responds to AP’s by causing
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There are three main nerves in your hand radial nerve‚ median nerve‚ and ulnar nerve. Each one of these gives movement and feeling to different areas of the hand. The ulnar nerve is one of the three main nerves in your arm. It travels from your neck down into your hand. The most common place for this nerve is behind the inside part of the elbow. The radial nerve descends down the arm with in the triceps with in the upper arm. Then moves down the arm within the humerus also known as the radial
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slight improvement in the ability to move the foot. He had weakness with dorsiflexion of the ankle and with moving his toes. He was evaluated by an orthopedic doctor and a repair of ligaments of the knee was recommended. However‚ there was concern of nerve involvement as well. Electrodiagnostic tests carried out demonstrated a connected‚ but abnormal peroneal but also tibial component function. When the patient went in for a physical examination‚ he was wearing a brace on his left knee with extensive
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The Germen chemist Dr. Gerhard Schrader was given a task to develop a pesticide. In just two years tabun was born‚ it had extremely high toxicity and was the first of the substances later referred to as nerve agents. A factory was built and produced during the years of 1942-1945 12‚000 tons of the chemical warfare agent tabun was made; in which the allies took large quantities of tabun at the end of the war. Even though Hitler and his army were losing the war‚ Schrader and his co-workers synthesized
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Name:shasou Exercise 3: Neurophysiology of Nerve Impulses: Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Which of the following occurs after the peak of the action potential? Your answer : b. Voltage-gated K+ channels open. Correct answer: d. All of these occur. 2. What is meant by Na+ channel inactivation? Your answer : a. The Na+ channel opens when the membrane
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spinal stenosis at this level. In addition‚ there is a disc osteophyte complex and disc space narrowing at L5-S1 with mild spinal stenosis and left greater than right mild foraminal stenosis. Furthermore‚ there is impingement upon the left L5 nerve root. EMG and nerve conduction report dated 05/06/14 revealed evidence of bilateral L5 lumbar radiculopathy and bilateral peripheral neuropathy. Per operative reports‚ IW underwent left L4-5 and L5-S1 transforaminal ESI on 11/07/2014; 05/15/2015; and 07/24/2015
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Simplex Virus (HSV) infection involving the facial nerve and remains. It will affect about 1 in 60 people during their lifetime. Men and women are equally affected as are the right and left sides of the face. Pregnant women‚ especially during the third trimester are more prone to develop Bell’s palsy. The facial nerve‚ on its path from the brain stem to the face passes through a narrow bony canal in the base of the skull. The viral infection of the nerve is thought to produce inflammation and swelling
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