Everyone wants to belong ‚ to be accepted . This is a major reason why teenagers feel pressurized to go along with what others are doing the so called peer pressure. Teenagers are going through tremendous physical and emotional changes as they change from childhood to young adults . There are new responsibilities to be faced ‚ exams to be taken and of course new relationships to be faced . There is rebellion against the rules and ideas that parents impose and so they flock together almost in desperation
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Callum Bourke Describe the long term effects of exercise on the Muskoskeletal system and energy systems. (P3) Describe the long term effects of exercise on the cardiovascular and respiratory systems. (P4) Cardiovascular System Cardiac Hypertrophy The heart increases in size and volume; this allows more blood to enter the heart allowing a greater amount of oxygenated blood to be pumped to the working muscles. To withstand the large amount of blood‚ the left ventricle becomes thicker‚ increasing
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The affect of psychological stress on the heart rate. Introduction: The human body is incredible machinery that can adjust to stressful situations and react in a “fight-or flight” manner by temporarily shutting off nonessential‚ at the moment‚ immune and digestive systems. When the body is ready for a challenge‚ heart rate increases‚ blood pressure rises and glucose production intensifies to supply large amounts of energy. These metabolic changes are caused by release of stress hormones (catecholamine
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The Effect of Position on Heart Rate This lab explores the effect of head position on an individual’s heart rate by having a subject move it’s head while simultaneously monitoring the subjects heart rate. There were three successive periods during which the heart rate was monitored that occurred in this order: a resting stage (subject sitting upright)‚ a stage with the head positioned between the knees‚ and a recovery stage (subject returns to upright position). The graph depicts a wide range
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EXTERNA MOST SUPERFICIAL TUNIC‚ HAS A SMOOTH SURFACE TO DECREASE RESISTANCE TO BLOOD FLOW 5 WHY ARE VALVES PRESENT IN VEINS BUT NOT IN ARTERIES? Veins need valves to create pressure to pump the blood to the heart. Blood flows away from the heart and‚ therefore‚ the pressure is not required. Helps against gravity. 6 NAME TWO EVENTS OCCURING WITHIN THE BODY THAT AID IN VENOUS RETURN. 1. Respiratory "Pump". Pressure changes that occur in the thorax during breathing. 2. Muscular "Pump". Contraction
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The Effect of Caffeine 1% and 2% on Daphnia magna’s Heart Rate Abstract: Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is cold‚ its heart rate will lower. When
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Reviewing Physiological Data Effects of exercise on the musculoskeletal system: Musculoskeletal system The musculoskeletal system is made of muscles‚ tendons‚ ligaments‚ bones/joints and associated tissues that move the body and maintain its form. This system operates under the control of the nervous system producing voluntary movements. “This system protects the brain and internal organs‚ maintains up right posture‚ blood cell formation‚ mineral homeostasis‚ stores fat and minerals”. During this
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Assignment 2 The Body’s responses to long term exercise A response to long term exercise is a change that happens to your body over a long period of time due to exercise. It is also known as chronic exercise. Unlike the short-term effects‚ these changes do not happen immediately‚ they take time and effort to achieve. Once these responses take place it will allow an athlete to work at a higher intensity for longer. These changes mainly occur in the heart‚ lungs and muscles. This table shows the changes
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The Effects of Secondary Plant Compounds on Lumbriculus Variegatus Heart Rate Introduction Blackworms (Lumbriculus variegatus) were used in this experiment to study the effects of secondary plant compounds‚ chemical compounds produced by plants that are not part of the general metabolism‚ on pulse rate. Secondary plant compounds act as defense mechanisms which reduce or eliminate consumption of some plant species or even attract predators. These compounds are not essential to the plant but often
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button on the panel above to save your report) Activity: Name: Instructor: Date: Effect of Exercise on Cardiac Output August 26‚ 2013 Predictions 1. During exercise HR will increase. 2. During exercise SV will decrease. 3. During exercise CO will increase. Materials and Methods 1. Dependent Variable EDV‚ ESV‚ and cardiac cycle length 2. Independent Variable level of physical activity(resting or exercise) 3. Controlled Variables age‚ weight‚ height 4. What instrument was used to measure
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