The action of ANS-related drugs on smooth muscle Introduction In the following experiment‚ the key objective is to compare the mechanical changes in tonic force by longitudinal smooth muscle after the addition of different concentrations of the drugs noradrenaline and acetylcholine. Peristalsis is the wave of muscle contractions that allow circular muscles to constrict the gut and longitudinal muscles to shorten it in an attempt to move the food bolus towards the rectum. A series of dilutions
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How to Reduce Lactic Acid Build up in Muscles Understanding Lactic AcidReducing Lactic Acid During a WorkoutReducing Lactic Acid Through Your Diet Edited by LC108‚ BR‚ Jacob‚ Vahab2121 and 5 others Lactic acid is released into the muscles when they have used up their normal energy stores but still have intense energy needs. Small amounts of lactic acid operate as a temporary energy source‚ thus helping you avoid fatigue during a workout. However‚ a build up of lactic acid during a workout can
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Title: Muscle twitch response and recruitment‚ summation and tetanus Exercise 1: The effects of nerve stimulation Objectives: 1. To explore the motor and sensory effects of electrical stimuli on a student volunteer‚ using the nerves of the forearm. 2. To examine the position where a largest muscular twich response with the lowest pulse current can be generated. This position is kept constant to determine results in exercises 2 and 3. Procedure: Refer to Human Biology Practical Manual
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we begin to experience the damages and pain we created for ourselves during our more youthful years. There are a number of factors that can make us more susceptible to bone disease. In this paper I will be discussing Osteoporosis‚ Osteoarthritis‚ Muscle Atrophy and the effects they would have on an eighty year old woman. The women’s physical condition is thin‚ small boned‚ and is Caucasian. None of these characteristics are in her favor of making her less likely to fall victim to the above bone or
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EXERCISE 2: Skeletal Muscle Physiology Student Name: ___________________________ Student ID#: _____________________ Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting‚ e.g. Exercise2_JohnSmith.doc. Please make sure that your answers
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Skeletal Muscle Physiology Activity 1 1. Skeletal muscle fiber- long‚ cylindrical cell with multiple oval nuclei arranged just beneath the sarcolemma Motor unit- all of the muscle cells controlled by a single motor neuron Skeletal muscle twitch- a single stimulus-contraction-relaxation cycle in a skeletal muscle Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start
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KIN 2500 -- MUSCLES O: origin I: insertion A: action N: Lever: rigid structure that moves around a fixed point fulcrum * Effort: causes the movement; force that is due to the muscular contraction; you only get motion when the effort that is applied at the insertion point exceeds the load * Load/Resistance: opposes that movement * 1st class levers: not very common; fulcrum is fixed between effort and load * 2nd class levers: standing on tip toes; fairly uncommon; the load is
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Preventing Muscle Cramps Caused By Dehydration John Doe GEN/200 April 18‚ 2011 John Deere Preventing Muscle Cramps Caused By Dehydration Muscles cramps and spasms can be annoying. If the body is not taking in enough daily fluids it can cause major health issues in a short amount of time. Fluids as well as other contributing factors such as age‚ has a large influence on muscles. People can often suffer from muscle weakness and cramping from dehydration. Exercising can also reduce
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EXERCISE 2: Skeletal Muscle Physiology Student Name: Student ID#: Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting‚ e.g. Exercise2_JohnSmith.doc. Please make sure that your answers are typed in RED. (You may delete these instructions
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Muscle Cell at rest: As the muscle cell is at rest it has a resting potential of -90mV. The K+ is all located inside the cell‚ the Na+ is located outside of the cell and the Ca2+ is located inside the sarcoplasmic reticulum. All leak channels and pumps are closed at this point. Muscle Cell stimulated by Acetylcholine: A motor neuron releases Acetylcholine which diffuses toward the muscle cell across the neuromuscular junction. As the Acetylcholine binds to a receptor on the muscle
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