FROG MUSCLE PHYSIOLOGY 2) What was the smallest voltage required to produce max contraction? What proportion of the muscle fibers in the muscle do you think were contracting to produce this maximal response? Muscle fibers act in response to isolated stimuli in an all or none fashion. However‚ a muscle organ‚ such as the gastrocnemius muscle‚ is composed of many individual muscle fibers. It is known that all of the fibers in a muscle do not have the same threshold and that a stimulus applied to
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Analyse the political factors involved in the unification of Italy up to 1861 Political factors played a huge role in the unification of Italy‚ both hindering and increasing the possibility of unification up to 1861. In this essay I will evaluate the most important factors that eventually led towards unification such as republicanism‚ Piedmont and Cavour‚ and wars such as the Crimean War. I will also discuss the factors that decreased the chances of unification including the congress of Vienna‚
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Joseph Cataldo Instructor: Suzanne Salemi College Writing April 22‚ 2015 Does protein help to build muscle? The latest craze is about protein and how it affects building muscles and building muscle strength. Today‚ there are many athletes that use it as a supplement. There are many protein supplements available that are claiming to help people who work out to build muscle faster. Protein is a structure within our bodies that consists of amino acids. The cells in our bodies need this to
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Improvements 6 The effect of exercise on the heart rate and breathing rate Introduction Aim: Finding out how exercise affects the heart rate and breathing rate. Hypothesis: Exercise exists in different forms and has many benefits; it improves the oxygen-carrying capacity of the blood‚ development of bones‚ strengthens muscles and the lungs capacity plus it can make you feel good. There are different exercises and intensities for different benefits. Lower intensity exercises are not designed to work
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relying on these types of entertainment rather than getting up and physically exercising to entertain them selves. This directly affects the large number of obese children in our country today because of the lack of physical exercise. It is not that we want our kids to look a certain way or to be better at sports than everyone else‚ but it is that we want our kids to be physically fit and to develop a healthy lifestyle. Physical exercise is not only for adults‚ it is for children as well‚ so we must
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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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My name is Gia McGee and I am a licensed Athletic trainer in 4 states; California‚ Georgia‚ New York and Florida. Since I was a little girl I always had dreams of becoming a doctor‚ It was not until my senior year of high school when I took a sports medicine class that I found out I wanted to become an Athletic trainer. Once it was time for me to begin college I decided to start off at a community college‚ I began at Jackson Community College‚ in Jackson MI after my first year I transferred to SVSU
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Comparing the Cardiac muscle and the Skeletal muscle Differences Similarities Skeletal muscle is usually linked to bones by structures called tendons. Cardiac muscle is found in the heart. They are both important parts to the body. Skeletal muscle cells are usually arranged into cylindrical fibres with multiple nuclei and can be directly controlled by voluntary nerve signals from the nervous system. Cardiac muscle cells are normally shorter and are linked via gap junctions which allow compounds
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EXERCISE 6: CARDIOVASCULAR PHYSIOLOGY |ACTIVITY 1: Investigating the Refractory Period of |Answers | |Cardiac Muscle | | |Which of the following types of muscle tissue can depolarize spontaneously in the |C- Cardiac Muscle
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Before the motor neuron cone arrives the muscle fiber‚ AChR clusters are formed in the middle section of a muscle fiber. When the growing nerve cone attaches the muscle fiber‚ Agrin activates Lrp4‚ which then binds to the receptor tyrosine kinase MuSK‚ through this binding MuSK is phosphorylated and starts to form the neural and aneural AChR clustering (Burden 2011). Morphologic differences in the pre- and/or postsynaptic part of the NMJ can be a hint of a certain disease. In the following figure
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