contractions following rapid‚ repeated stimulation of a muscle. Wave Summation (p. 21) - The combination of responses from a motor unit that has had two or more stimuli applied to it in quick succession. Tetanus (p. 21) - A state of continuous muscular contraction‚ especially when induced artificially by rapidly repeated stimuli. Muscle Fatigue (p . 23) - Muscle fatigue is the repeated‚ intense use of muscles which leads to a decline in performance.Though the actual mechanism for muscle fatigue
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The endocrine system works with the nervous system to maintain homeostasis. The endocrine system secretes hormones in the human body‚ which are produced in endocrine glands and are released into the bloodstream to travel to the its specific target cell‚ tissue‚ or organ. Exocrine glands produce chemicals that are discharged into the surroundings. Hormones can either produce short-lived responses or long-term responses. An example of a short-lived response is when adrenaline (epinephrine)causes the
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Maya Bourgeois 10/26/14 09/08/14 “Notch1 and osteoblasts play role in bone cancer initiation” Baylor College of Medicine Glenna Picton Some molecular and cellular geneticists at the Baylor College of Medicine have discovered that Notch1‚ a gene that can decide cellular fate‚ can cause osteoblasts (cells that lead to bone formation) to become cancerous. They determined this data using a mouse model of osteogenic sarcoma‚ a deadly bone malignancy. Turns out that in mice
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Period 1 Physiology September 16th 2014 Lab 1: Homeostasis Background Information The conditions in our bodies do not really change at all. Our body temperature has to stay within a certain range in order to function. We maintain these function through a process which is called homeostasis. Homeostasis is the process of maintaining a constant internal environment such as body temperature‚ blood pressure‚ and heart rate. An analogy to help explain homeostasis is a student walking up the down escalator
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DR ROCHMAN NAIM TITLE: METABOLIC STRESS‚ BURN AND SURGERY AND THEIR NUTRITION THERAPY PREPARED BY: LEONG SIM KIAN STUDENT NO.10 028112 SUBMITTED DATE: 31 MARCH 2011 1 1 2 3 4 5 In its never-ending quest to maintain homeostasis‚ the human body responds to stress‚ physiologic or psychological‚ with a chain reaction that involves the central nervous system and hormones that affect the entire body. Magnitude and duration of the stress determine just how the body will react
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Pain is the main symptom of deterioration and damage to the surrounding tissue where the sensation arises. This unpleasant sensory and emotional distress is determined by the region and systems of the body involved‚ and is categorized into degrees of pain by the intensity‚ time of pain onset and aetiology (1‚ 2). Pain is a subjective sensation and it is therefore the patients´ own perception that describes and categorizes the level. If the duration of pain exceeds 3 months it is commonly known as
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on enzyme activity in skeletal muscle‚ particularly the activity of lactate dehydrogenase (LDH). LDH is a glycolytic enzyme which converts pyruvate to lactate in the following equation: LDH Pyruvate+ NADH ------------ Lactate + NAD The reaction above can move in both directions‚ forward (favored by Type II skeletal muscle) and reverse (favored by Type I skeletal muscle and the heart)
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Homeostasis report 3.4 The Purpose of the Homeostatic System Homeostasis is a process that ensures the balance or equilibrium in different internal areas of the body. It’s vital that the human body maintains this balance state as significant fluctuations could cause a severe effect on the body. All homeostasis systems are negative feedbacks‚ “a regulatory mechanism in which a ‘stimulus’ causes an opposite ‘output’ in order to maintain an ideal level of whatever is being regulated”‚ meaning if the
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Unit 1 Assignment 1: Homeostatic Balances Homeostasis is maintaining an Internal Balance. If we fail to maintain an internal balance every system inside of our body will be disrupted. Hypertension To explain to a 65 year old man with an 8th grade education‚ that he has hypertension‚ I would begin explaining‚ in a manor I believe that he would understand‚ what hypertension is and how it can affect him. ‘Hypertension is when your blood pressure is high on a daily basis. Blood pressure is considered
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REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: LAB TIME/DATE:9pm.. 4.8.11 Electrical Stimulation 1. Name each phase of a typical muscle twitch‚ and‚ on the following line‚ describe what is happening in each phase. a. Latent-stage from rest to muscle tension begins b. Contraction-At this stage the muscle reaches its peak in contraction c. Relaxation- muscle is shortened‚ returns to zero and back initial length. 2. In Activity 2‚ how long was the latent period? ___2
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