The skeletal system: The bones of the skeletal system hold the body together‚ give it shape and support weight. They also enable the body to move and provide protection to the vital organs. There are four types of bones found in the human body: they are long bones which can be found in the arms‚ legs‚ fingers and toes‚ short bones which are found in the wrist and ankles‚ flat bones such as those in the skull‚ thorax and pelvis‚ irregular bones such as the bones of the vertebral column and face
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Essay cover sheet Essay Title: How Do Nerve Cells Work and Why is it Important for Psychologists to know this? Student number: M00267898 Word count (Excluding title and references section):1‚062 Declaration By submitting this work I acknowledge that I am its author‚ that all sources consulted in its preparation are referenced appropriately in accordance with the referencing guide‚ and that I have not copied from any source. How Do Nerve Cells Work and Why is it Important for Psychologists
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Caffeine is a central nervous system stimulant of the methylxanthine class. It is one of the most worldwide consumed psychoactive substances and it is totally legal. The chemical name of caffeine is 1‚ 3‚ 7 – Trimethylpurine – 2‚ 6‚ - dione. Its molecular formula is C8H10N4O2 and it has a molecular mass of 194.19 g/mole. Caffeine is an odourless‚ white crystalline purine‚ a methylxanthine alkaloid‚ which is closely chemically related to adenine and guanine. Caffeine acts through multiple mechanisms
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Site Plan | I. Neurons/nerve cells A neuron is a cell specialized to conduct electrochemical impulses called nerve impulses or action potentials. Neuron is the main cellular component of the nervous system‚ a specialized type of cell that integrates electrochemical activity of the other neurons that are connected to it and that propagates that integrated activity to other neurons. They are the basic information processing structures in the CNS.
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Within the body‚ there are billions of cells that are essential to living – these are called nerve cells. Nerve cells‚ also known as neurons‚ “are the basic information processing structures” (Stufflebeam). There are about 100 billion of these neurons in our nervous system and are the most essential cell in it. Located in brain as well as the spinal‚ there are different types of nerve cells; including: sensory neurons‚ motor neurons‚ and interneuron (Boeree). The neuron is a cell that is structured
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Session 9: The Nervous System - Assignment #2 PhysioEx Assignment : Exercise 3 Neurophysiology of Nerve Impulses Activity 1: The Resting Membrane Potential 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Increasing the extracellular K+ causes the membrane potential to change to a less negative value because when K+ ions diffuse out across the membrane they are leaving behind a net negative charge. 2. Explain
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The human Body is a very complex organism. It is composed of many different organs systems‚ which are vital for the body to function properly. They work with one another in order to carry out daily life activities and maintain the body’s proper functions. Among these organ systems lies one of the most important‚ the nervous system. The nervous system functions as the control center of the body‚ and it is in charge of the activities of the rest of the organs systems and the body’s components (Marieb
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Central Nervous System: The central nervous system consists of the brain and spinal cord. The brain controls bodily functions. The cerebrum is the largest part of the brain in humans. The cerebrum is the last place that information travels through in the brain. The spinal cord is the part of the body that communicates between the brain and the nerves that connect to the spinal cord. The spinal cord is commonly known as a pathway from the brain to the body. Peripheral Nervous System: The peripheral
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of the brain and spinal cord. Neurones are found throughout the body with the majority found in the central nervous system. Neurones are specialized to process information in the body. Neurones convey this information to one another through the stimulation of a detector neurone. This causing a brief change in the electrochemical gradient resulting in the neurone moving away from its resting potential. This is known as an action potential. Once initiated the action potential travels the length of
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CENTRAL NERVOUS SYSTEM STIMULANTS CENTRAL NERVOUS SYSTEM STIMULANTS Definition Stimulants are a substance which tends to increase behavioral activity when administered. Primary action of a diverse group of pharmacologic agents – adverse effect associated with many drugs. Signs and symptoms * Elevate Mood * Increase Motor Activity * Increase Alertness * Decrease need for Sleep *In case of overdose lead to convulsion and death. Mode of Action * Block neurotransmitters
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