receiving part of the neuron. It is a short extension of the cell body And send signals toward the cell body and the cell body conducts nerve impulses which in the transmission of the nerve impulses from the region to the other cell. The axon is a single extension carries the message to the next neuron‚ which controls all of the nerves. The nerve impulse is response of the neuron. There are 3 classes of neurons: sensory neurons‚ motor neurons‚ and interneurons. Neurons are also called nerve
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Anatomy and Physiology Unit Notes Unit 1: Organization of the Human Body Key Terms: Ana - prefix that means up or back again. Physio - a prefix that means natural or physical. Ology - a suffix that means the study of something. Homeo - a prefix that means like or similar. Thoraci -a prefix that means chest. Stasis - a suffix that means the slowing of a bodily fluid. Abdomino - a prefix that means abdomen. Anatomy-the study of structure. Physiology - the study of how a structure functions
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brain contains an estimated 1011 (100 billion) neurons. Each neuron may communicate with thousands of other neurons in complex information-processing circuits. Recently developed technologies can record brain activity from outside the skull. One technique is functional magnetic resonance imaging (fMRI)‚ which reconstructs a 3-D map of the subject’s brain activity. The results of brain imaging and other research methods show that groups of neurons function in specialized circuits dedicated to different
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Chapter Five – Learning Learning – a relatively permanent change in behaviour (or behaviour potential) due to experience. Behaviours not dependent on learning Reflex action – a simple‚ automatic‚ involuntary response to a specific stimulus that comes directly from the nervous system and is basically the same each time it occurs. Fixed action pattern (FAP) – the innate predisposition – essentially identical among most members of a species – to behave in a certain way in response to a specific
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1.) Name and describe the function of each part of a neuron. What is a neuron? The neurons are the basic elements of our nervous system. You can call them specialized cells in which includes the units of info-development in our brain‚ are very responsible for the perception and the transportation of information. Each part of the neuron has a very important role providing information in the whole body. The most important parts of a neuron are: a cell body‚ dendrites‚ and an axon. • Cell Body‚ also
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Why psychology? know yourself figure other ppl out manipulate others Psychology – scientific study of behavior and mental processes Science that studies behavior and the physiological and cognitive processes that underlie it‚ and the profession that applies the accumulated knowledge of this science to practical problems Key ideas -science -behavior and internal processes -application -level of analysis Great debates in psychology * free will determinism To what extent do we
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Chapter 3 review components of a neuron (i.e.‚ dendrites‚ axons‚ terminal buttons) dendrites A branched fiber that extends outward from the main cell body and carries information into the neuron. axon In a nerve cell‚ an extended fiber that conducts information from the soma to the terminal buttons. Information travels along the axon in the form of an electric charge called the action potential. terminal buttons Tiny bulblike structures at the end of the axon‚ which contain neurotransmitters
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Nikki Hayes Bonus assignment April 17‚ 2012 Acetylcholine Acetylcholine better known as ACh is a neurotransmitter that is produced by cholinergic neurons. Nerves that rely on Ach are classified as cholinergic nerves. Acetylcholine is found in both the peripheral nervous system and the central nervous system. Acetylcholine can also be found in the autonomic nervous system and is the only neurotransmitter used in motor division of the somatic nervous system. In the peripheral nervous system
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the results compare with your prediction? Your answer: MY PREDICTION WAS WRONG. THE TRESHOLD FOR THE SECOND POTENTIAL CHANGED. 4. Why is it harder to generate a second action potential during the relative refractory period? Your answer: SINCE THE NEURON IS HYPERPOLARIZED‚ LITTLE BIT MORE NEGATIVE THAN USUAL. ONLY STRONG SIGNALS CAN TRIGGER A SECOND ACTION POTENTIAL DURING THE RELATIVE REFRACTORY
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Neurotransmitters Neurotransmitters are chemicals made by neurons and used by them to transmit signals to the other neurons or non-neuronal cells (e.g.‚ skeletal muscle; myocardium‚ pineal glandular cells) that they innervate. The neurotransmitters produce their effects by being released into synapses when their neuron of origin fires (i.e.‚ becomes depolarized) and then attaching to receptors in the membrane of the post-synaptic cells. This causes changes in the fluxes of particular ions across
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