experiment is to examine the results of stimulation on a frog’s sciatic nerve by looking at its compound action potential‚ the conduction velocity‚ and by quantifying the total and absolute refractory period between the nerve at room and cold temperature. An oscilloscope‚ preamplifier‚ and stimulator were used to stimulate the frog’s nerve located in the nerve chamber. Threshold voltage was determined by stimulating the nerve at increasing voltages until a compound action potential resulted. Absolute
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Engr 4132 Biomedical Engineering Lab Dr. Gang Xu Lab #9: ECG & Pulse Mechanical Action of the Heart Peripheral Pressure Pulse Plethysmography By: Abigail Magee Partners: Lauren Tinnin Nick Walker Date: 11/05/2015 Introduction: The heart goes through a cardiac cycle in order to pump blood throughout the body. This cycle is started by electrical activity that can be measured by an electrocardiogram. As the heart contracts‚ it pumps blood into the next section of the cardiac
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Handout Lab 5 - Cranial Nerves: Assessment of Functions INTRODUCTION The central nervous system (CNS) consists of the brain and the spinal cord. The CNS receives sensory information from other parts of the body or the body’s external environment and transmits motor information to other parts of the body by way of the peripheral nervous system (PNS). The PNS of the human includes 31 pairs of spinal nerves and 12 pairs of cranial nerves. Some nerves contain only motor nerve fibers (efferent
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Human Anatomy & Physiology Version 8.0 Physioex Exercise 8 CHEMICAL AND PHYSICAL PROCESSES OF DIGESTION - ANSWERS Please note: I do not include the charts as you still have to do the experiments and print the data and graphs. Activity 1 What do tubes 2‚ 6‚ and 7 reveal about pH and amylase activity? Hint: What variable was changed in the procedure? a. maximum of amylase is at pH 7.0 (tubes 2 & 5‚ brownish red) and pH 9.0 showed little activity (tubes 6 & 7‚ green) Which pH
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Physics Lab Report#8 “Solving Problem Involving Vector Addition” Name: Fei Huo Date performed: November 12‚ 2014 Period 5 Teacher: Mr. Glasel Purpose: The purpose of this lab was to solve problems that involve the vector addition. Introduction: My classmates and I were solving the equations by graphing them and/or to solve them algebraically. Each of the equations had scales and we were to use these scales for each question in graph paper. Some if the questions didn’t need to
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of water in the fluid that line the walls of the alveoli. Activity 5: Effect of Thoracic Cavity Puncture 1. What happened to the left lung when you clicked on the valve button? It deflated. 2. Why? Because the pressure in the left lung was 0 and the right lung changed rapidly‚ the air moved into the intrapleural space through the opening‚ causing intrapleural pressure. 3. What has happened to the “Total Flow” rate? It was reduced by ½. 4.
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is activated by the rise in blood temperature and is responsible for for controlling the mechanisms that will decrease the blood temperature. Efferent nerve impulses are sent from the hypothalamus to multiple different corrective mechanisms to try to decrease the blood temperature and maintain it at approximately 37℃. The efferent nerve impulses causes the smooth muscles to relax and as a result‚ opens up blood capillaries near the surface of the skin. This is known as vasodilation as the blood
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Assignment 1. 1. Summarise the main development of a child from the age range 0-2 years‚ 3-5 years and 5-8 years. 0-2 Years Newborn babies grow extremely quickly. During ‘Infancy’‚ which lasts from birth to eighteen months‚ babies change from a helpless newborn‚ to a child who can lift up their own head at three months‚ sit up unsupported at six months‚ walk at sixteen months and kick and throw a ball at two years old. Newborn babies actually lose some of their birth weight to begin with
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Lab Report: Animal Behavioral Diversity Biology 112 Lucas LLona 5-7-13 1) a. Based on background knowledge regarding beta fish‚ I believe that the male beta fish will be the first out of the two specimens to display any aggressive behavior. b. - Pectorals flap at rapid speeds when the beta fish is uncomfortable and appears agitated. - The gill cover expands in size when the beta fish is uncomfortable. - Caudal fin moves quickly when agitated and also determines how quickly the specimen
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Name and Student ID Number here: Charles Coon 4048223 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation
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