problems with nerve impulses that can lead to depression. There are many drugs that can intentionally change these normal chemical processes in our brain to maintain the feeling of happiness; however‚ these drugs are extremely dangerous to the human body and are unhealthy for humans. `The brain is a complex organ that has a complex‚ but quick process of delivering the neurotransmitters to the receptors. Neurons communicate with each other by sending electrical signals‚ nerve impulses‚ through tube
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"Explain the concept of homeostasis with reference to the control of heart rate‚ breathing rate‚ body temperature and blood glucose levels" P5 Homeostasis is where the body keeps a constant internal environment. This involves all the metabolic processes taking place In the body as well as the blood‚ tissue fluid and all the contents in the body ’s cells. There are a range of variables from heart rate to the blood glucose levels that the body will take into account. Negative feedback will occur
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Homeostasis by definition is the technical term for the process of maintaining a constant internal environment despite changes in the external environment. The internal environment comprises of blood‚ tissue fluid‚ body cell contents and all metabolic processes taking place inside the body. This process is essential to the survival of a person and to our species as a whole. The liver‚ the kidneys‚ and the brain (hypothalamus‚ the autonomic nervous system and the endocrine system) help maintain
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H E E T EXERCISE 21 Print Form Spinal Cord‚ Spinal Nerves‚ and the Autonomic Nervous System Anatomy of the Spinal Cord 1. Match each anatomical term in the key to the descriptions given below. Key: a. cauda equina 1. 2. 3. 4. b. conus medullaris c. filum terminale d. foramen magnum most superior boundary of the spinal cord meningeal extension beyond the spinal cord terminus spinal cord terminus collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal
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The objective of this report is to critically explain the physiological effects of exercise on the human respiratory system and cardiovascular system. To begin with‚ I will explain the two systems‚ their specific functions and how they inter-relate. I will then go on to analyse the effects of exercise on the two systems by looking at the way in which the body deals with an increased workload‚ and any health issues that may affect this. Cardiovascular system This system is responsible for pumping
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viruses and germs. With the autoimmune disease‚ the immune system makes antibodies against parts of one’s own body tissues. In a person with normal immune system‚ muscles are stimulated to contract by the transmission of nerve impulses to the muscle fibers. The nerve impulses cause neurotransmitter acetylcholine to be released into the synaptic cleft. There it is picked up by the acetylcholine
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Definition Paralysis is the loss of the power to move a part of the body due to injury or disease of the nerves that supply the muscles involved in moving that part of the body. The key points in this definition are firstly that paralysis refers to a loss of movement rather than just weakness‚ and secondly that the problem originates in the nerves to the muscles rather than in the muscles themselves. The severity of the paralysis is indicated in medical terminology by the word endings:
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meaning that it will generate an electrical impulse‚ or inhibitory‚ meaning that it will prevent the neuron from firing an electrical impulse. A neuron receives thousands of input signals from its dendrites‚ but whether the neuron is excited enough to the point it will generate an electrical impulse depends on the sum of the inhibitory and excitatory signals. The resting potential of a neuron is -70 MV‚ and the threshold to activate an electrical impulse (action potential) is – 55
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Week 2 Reading Summary : Chap 1-3 Chapter 1 Anatomy: studies the structure of body parts and their relationship to one another. Can be seen‚ felt‚ examined. Physiology: concerns the function of the body in other words‚ how the body parts work and carry out their life-sustaining activities Complementary of structure and function Function reflect structure‚ what a structure can do depends on is specific form Levels of structural organization: Cells – smallest living unit
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