Introduction Neurons (also known as neurons‚ nerve cells and nerve fibers) are electrically excitable and the most important cells in the nervous system that functions to process and transmit information. Neurons have a large number of extensions called dendrites. They often look likes branches or spikes extending out from the cell body. It is primarily the surfaces of the dendrites that receive chemical messages from other neurons. One extension is different from all the others‚ and is called
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the cranial nerves‚ to test if all of them are alert‚ functioning and normal. I will be testing the cranial nerves on Brenda Jones my partner for this experiment. The cranial nerves that I will be testing on my partner is the olfactory nerve‚ the optic nerve‚ the oculomotor nerve‚ the trochlear nerve‚ the abduces nerves‚ the trigeminal nerve‚ her facial nerves‚ the vestibulocochlear nerves‚ the glossopharyngeal nerve‚ the Vagus nerves‚ her accessory nerve and her Hypoglossal nerves. By examining
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The Cardiovascular System: Intrinsic Conduction System 1. The intrinsic conduction system consists of __autorhythmic cardiac______ cells that initiate and distribute __impulses___ throughout the heart. 2. The intrinsic conduction system coordinates heart activity by determining the direction and speed of _heart depolarization___. This leads to a coordinated heart contraction. 3. List the functions for the following parts of the intrinsic conduction system: a. SA Node __initiates the depolarizing
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sciatic nerve‚ speed of transmission and degree of myelination can all have an effect on the sciatic nerve and therefore the peak contractile force of B. Marinus. The diameter of the axon in the sciatic nerve would impact how fast the action potential is conceived down the axon to the synaptic cleft and muscle (Firmin‚ L. 2014). If one of the toads had a smaller axon diameter it would allow for resistance to movement to occur due to friction. The diameter of the axon in the sciatic nerve would therefore
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Abstract: The purpose of this experiment was to examine how the compound action potentials propagate down the sciatic nerve of a frog based on varying stimuli. Before the nerve could be tested it needed to be extracted from the thigh of the frog and then submerged in saline. Several varying stimuli were used and recorded by a software package. The second experiment requires a constant stimulus with varying reference pin locations. From this the velocity of the action potential propagated can be
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INTRODUCTION 1 ANATOMY 4 PHYSIOLOGY 5 continous conduction 5 saltatory conduction 6 Discussion 7 pain pathway 7 INTRODUCTION Trigeminal nerve is the most largest and most complex of the 12 nerves. It supplies sensations to the face‚ mucous membrane and other structures of the head. It provides a motor nerve to the muscles of mastication and contains proprioceptive receptors. It consists of a large sensory and small motor nerve that exits through the pons at it junction with the
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Anatomy & Physiology I Cranial Nerve Lab Report: Zoe’s Case Annastelle L. Cohen‚ Brandi Brown‚ Mariann Killen Howard Community College BIOL-203: Anatomy & Physiology I Professor Canham April 26‚ 2016 Introduction There are twelve pairs of cranial nerves associated with the human brain that all have individual and essential functions. They are represented by a name that is followed by a Roman numeral. The cranial nerves are organized in a cranial to caudal sequence (Howard Community
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Occlusion Intraarch— prox contact betw teeth tooth inclination: inclined to receive closing force along axes occlusal plane curvature (Curves of Spee & Wilson) Spee— anteroposterior mand canine→along buccal cusp tips affects posterior cusp height **protects against protrusive interferences Wilson—translateral curve lingual inclination of mand posteriors **protects against lateral interferences Interarch— arch length: max
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? No 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? The threshold voltage is at 3.0 V. 3. How does this tracing compare to the one that was generated at the threshold voltage? There was a slight increase. 4. What reason can you
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use of Nerve agents‚ and to a larger extent Chemical Weapons‚ is illegal according to United Nations Resolution 687 which passed in 1991. The production‚ stockpiling‚ and use of these weapons were banned by The Hague Convention of 1899 and the Geneva Protocol of 1925. All Nerve agents are fatal to the human body in the same way. Some are more potent‚ and some remain on the battlefield longer than others. Many factors play a role in how long a Nerve agent remains on the battlefield. Nerve agents come
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