Chapter 9: Muscular System: Histology and Physiology Multiple Choice 1. The capacity of a muscle cell to shorten forcefully is known as A) contractility. B) excitability. C) extensibility. D) elasticity. E) flexibility. Answer: a Level: 1 2. Muscles exhibit the property of excitability. This means that the muscle A) shortens its length. B) recoils to its original resting length. C) stretches beyond its normal length. D) responds to stimulation by the nervous system. E) excites
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English 105 2 October 2012 Creatine and Improved Athletic Performance: Benefits‚ Risks‚ and Regulation Abstract Creatine‚ being a natural building block in fast twitch muscle energy supply‚ can also be used by athletes as a supplement to increase muscular performance. It can be classified by many athletic associations as a muscle building supplement‚ much like anabolic steroids‚ and these associations take that into account when generating use policies for competition. However‚ there are many risks
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Anatomy & Physiology December 16‚ 2012 Anatomy and Physiology 1 Final Exam Define/Describe the following terms as completely and detailed as you can: 1. Inflammation- Inflammation is the bulging of skin‚ organs‚ or other body parts due to fluid buildup caused an injury. The fluid rushes to the injured area and that is what makes the puffiness. 2. High Fructose Corn Syrup- (HFCS) Composed of corn and lab chemicals. HFCS is found in processed foods such as salad dressing and soda. Your body
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Your 10 Pounds of Muscle Plan Why do you want it? Here are some quick no nonsense reasons: 1. Muscle is a metabolic marker that tricks your body into thinking it’s younger. The more muscle you have‚ the younger you look. Don’t believe me? Find a muscular 75-year old guy at your gym. I guarantee he looks like he’s in his 50s. 2. Muscle burns fat. Muscle increases the amount of calories you burn throughout the day. Whether it’s 1 calorie or 1000 calories (another academic debate I don’t get into)‚
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whole muscle is controlled by the firing of up to hundreds of motor axons. These motor nerves control movement in a variety of ways. One way the nervous system controls a muscle is by adjusting the number of motor axons firing‚ thus controlling the number of twitching muscle fibers. This process is called recruitment. A second way the nervous system controls a muscle contraction is to vary the frequency of action potentials in the motor axons. At stimulation frequencies of less than 5 Hz‚ intracellular
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Task: B1 Introduction to Different Types of Mental Training An athlete qualifying for an Olympic Final competes against athletes who are fit‚ strong‚ flexible‚ powerful and skilful. All the competitors have devoted time and energy to becoming top-class athletes. However‚ there is only one champion and two medal winners. Often the difference between a medal and eighth place is a fraction of a second or a few centimetres. Interviews with athletes who succeed at this highest level often focus on
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Student Name: Kiana Jimenez Flexibility Goal: I aspire to touch my toes no later than 8/28/13. I believe that completing this goal will help me to improve when I need to reach something with ease. (Worth 10 points) Muscular Goal: I aspire to perform 20 modified pushups no later than 8/29/13 I believe that completing this goal will help me to improve when I carry my backpack.(worth 10 points) Date Warm-up Physical Activity Intensity Cool-down Minutes 8-25-13 Soccer 8-26-13
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fatigue. After working out though‚ we often have lactic acid buildup‚ which will cause fatigue and muscle weakness‚ so we must rule that out. 3. Why is Annie having problems breathing? Breathing is an involuntary function of the respiratory system. In the spinal cord there are nerves that are in charge of these involuntary functions. The apneustic center is the “regulatory area located in the pons; stimulates the inspiratory center to increase the length and depth of inspiration” (Patton
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A&P Exam #3 Ch 9&10 1) Know the four (4) functional characteristics of all muscle tissues -Excitability or Responsiveness- The ability to receive and respond to a stimulus that is any change in the environment whether inside or outside the body. In the case of muscle ‚the stimulus is usually a chemical for example - a neurotransmitter released by a nerve cell‚ or a local change in ph. The response is generation of of an electrical impulse that passes along the sarcolemma of the
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long period of time Walk 2 miles at a brisk pace every day. Reduced the risk of heart disease‚ hypertension‚ and high cholesterol. Muscular Strength The amount of force a muscle or group of muscles is capable of putting forth. Do sit ups or pushups or use dumb bells at least two times a week. Improve muscle tone and maintain muscle strength. Muscular Endurance The ability of your muscles to use force over and over without them getting tired. By doing more repetitions with weights
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