Exercise 3: Neurophysiology of Nerve Impulses: Activity 8: Chemical Synaptic Transmission and Neurotransmitter Release Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. The end of the axon where it contacts a target is called the You correctly answered: c. axon terminal. 2. Neurotransmitter is released into the synaptic gap by You correctly answered: a. exocytosis. 3. Exocytosis of neurotransmitter from the axon terminal is triggered by an increase
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(CNS) is the nerves in our brain and spinal chord. The peripheral nervous system (PNS) is a network of nerve cells in the rest of our body. -Our nervous system detects stimuli and allows us to react to them. -Stimulus: a change‚ action or occurrence in the environment that can cause an organism to respond. Eg. Light‚ noise‚ pressure… How do we detect stimuli? -We have sensory organs that detect particular stimuli eg. Skin What happens after we have detected a stimulus? 1. An impulse (electrical
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part of a neuron that conducts impulses away from its cell body is called a(n) _______________. a) axon b) dendrite c) neurolemma d) Schwann cell 3. Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials? a) mechanically gated channel b) voltage-gated channel c) leakage channel d) ligand-gated channel 4. An impulse from one nerve cell is communicated to another nerve cell via the __________. a)
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voluntary time; the reason could be that when you had to hear the sound for the voluntary activation you had to process the sound than process kicking. This would take longer than automatically kicking with the involuntary activation. In the body an impulse nerve signal had to be sent to the object reacting in this case kicking your leg. 2. How does your reaction time to the voluntary action of your quadriceps compare with your reaction time to the simple reaction task in Project 2.2.3? The task in this
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January 30‚ 2014 Nervous Tissue ! Anatomy & Physiology - Overall Purpose of the Nervous System ! • To keep controlled conditions within limits that maintain life health and homeostasis ! - Regulates body activities by responding via nerve impulses‚ works with the endocrine system which responds by releasing hormones ! • Responsible for our behavior‚ memories‚ and movements ! • Neurology : branch of medicine that deals with normal functioning and disorders of the nervous system !
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scents at the point of sale to create a more enjoyable atmosphere which increases the buy-impulse. 2. Function and anatomy of the brain‚ logic of emotions‚ principles 2.1. Function and anatomy The human brain regulates and steers our bodies. All processes happening to make work certain parts of the body‚ have a biochemical or biophysical basis1. For instance: if signals wouldn´t be send through nerves to the heart to make it pump blood through the veins‚ it would simply stop beating. The central
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spinal cord‚ and nerves. These organs mostly consist of Nervous Tissues. http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19588.jpg Nervous Tissues Nervous tissues are made up of two main types of cells: nerve cells/neurons and neuroglia. The main functions of nervous tissues are to react to stimuli and generate impulses to various organs in the body. http://www.occc.edu/deanderson/dennis-tutorial/dennis-jpeg/Nervous%20Tissue-low%20mag%20D-1%20copy Nerve cells and Neuroglia
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initiated by sinoatrial node inside the heart itself‚ not by nerve impulses from the central nervous system. After exercise‚ the concentration of carbon dioxide in the blood is high‚ meaning that the pH in the blood is low. Chemoreceptors in the carotid arteries and aortic walls detect this change in pH. They increase the frequency of nerve impulses to the centre in the medulla oblongata. The centre increases the frequency of impulses via the sympathetic nervous
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Brain 2. Spinal Cord B. Peripheral Nervous System (PNS) 1. Nerves to parts of the body 2. Nerves from parts of the body C. Functions 1. Sensory a. receptors for stimuli (receive stimulus) b. peripheral nerves (carry impulses to CNS) c. activities monitored 1) light intensity (visual) 2) sound intensity (auditory) 3) temperature 4) oxygen concentration 5) internal fluid conditions 2. Motor a. peripheral nerves (carry impulses from CNS) b. effectors (muscles & glands) 3. Integration
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hamburger encounters the olfactory cilia‚ located in the supporting olfactory epithelium. The cilia pass along the impulse of the odor thru the olfactory cell‚ then further onto the axon bundle‚ before passing through the cribriform plate. Upon leaving that boney structure‚ the signal hops a ride on the olfactory bulb. The bulb in turn feeds impulses on to the olfactory nerve. This nerve enters the brain and will cause the subject to understand the odor to be hamburger‚ of which he wants to eat. The
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