HOW DOES THE STRUCTURE OF NEURONES REFLECT THEIR FUNCTION The neuron or nerve cell is the structural unit of the nervous system. It is able to transmit messages between the central nervous system (CNS) and all parts of the body. There are two basic types of neuron namely - the sensory neuron (afferent) and the motor neuron (efferent) (Bear et al.‚ 3rd edition). The sensory neurons (Fig. 1-1) are capable of transmitting the sensation of pain and consist of three major portions which are the dendritic
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is strong enough‚ a nerve impulse is generated in an "all or none" response which means that a stimulus strong enough to generate a nerve impulse has been given. The stimulus triggers chemical and electrical changes in the neuron. Before an impulse is received‚ a resting neuron is polarized with different charges on either side of the cell membrane. The exterior of the cell is positively charged with a larger number of sodium ions present compared to the interior of the cell. The interior of the cell
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Parkinson’s disease. Background information: In Parkinson’s disease‚ molecular mechanisms that function to mediate the deterioration of dopamine neurons located at the midbrain not clearly comprehended by many. In the pattern of a mouse of this disease‚ empirical evidence in support for the role of calcium-dependent protease‚ in the failure of dopamine neurons is provided
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the brain. As a result‚ exposing an infant to as many opportunities or affordances in his/her environment‚ in order to achieve maximum benefit and sustaining these affordances‚ especially in early development‚ will help refine and strengthen those neurons‚ using nature as well as
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Running head: BRAIN-BASED LEARNING AND PLAY Brain-Based Learning and Play Wanda Dix University of Phoenix Early Childhood Play Theories ECH 542 Professor Dr. Sharon Ray February 8‚ 2008 Abstract The following paper will explore the meaning of brain-based learning and play. The definitions‚ history‚ some of the core principles and implication of best teaching techniques will be address.
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BIO 210 Anatomy & Physiology I Study Guide for Cumulative Final Exam 1. Know the Student Learning Objectives given on the course syllabus. 2. Be able to define: anatomy chemistry positive feedback anabolism physiology biochemistry negative feedback catabolism histology homeostasis metabolism 3. Be able to identify specific examples of homeostasis and negative feedback regulation with blood glucose and calcium levels and blood pressure control. 4. Be able to place each level
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Chapter 2 Outline The Biological Perspective Neuron A specialized cell transmitting nerve impulses; a nerve cell Dendrites Dendrites are treelike extensions at the beginning of a neuron that help increase the surface area of the cell body and are covered with synapses Soma The soma is the cell body of a neuron. Axon The Axon of a neuron is a singular fiber that carries information away from the soma to the synaptic sites of other neurons (dendrites and somas)‚ muscles‚ Glial cells
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Activity 1: Multipolar Neurons Observations: (No submission) Sketch your observations through the microscope of the neuron‚ the ox spinal cord smear‚ and the teased myelinated nerve. Answer these Questions: A. What is the functional difference between a neuron and a nerve? A neuron is a nerve cell and is a basic building block of the nervous system. Neurons also have special functions‚ like transmitting information throughout the body. A nerve is a bundle of neuron cells. B. What
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1. Human Nervous System- the part of a body that coordinates its voluntary and involuntary actions and transmits signals between different parts of its body. Mostly‚ it consists of two main parts‚ the central nervous system (CNS) and the peripheral nervous system (PNS). 2. Central Nervous System- the processing center for the nervous system. It receives information from and sends information to the peripheral nervous system. The two main organs of the CNS are the brain and spinal cord. The brain
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DEFINE | ANSWER | psychology | scientific investigation of physical and mental behavior | experimental method | used to text predictions derived from theory | basic science | accumulation of knowledge for knowledge sake (describe‚ predict‚ and explain behavior) | applied science | application of knowledge to solve practical problems (modify behaviour). | Empiricism | knowledge based on observation | Scientific Method | rules for observation‚ experimentation‚ and measurement | Skepticism
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