"Neuromuscular junction" Essays and Research Papers

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    The Neuromuscular Junction by: Dominique Latham 651 words A neuromuscular junction is a place in the body where the axons of motor nerves meet the muscle‚ thus transmitting messages from the brain which cause the muscle to contract and relax. Every organism has thousands of neuromuscular joints which are the locations and means by which the motor neuron of the nervous system that instructs the muscle cells of the muscular systems to take action. Action that ‚ in turn lead to movements of muscles

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    Exocytosis and the Neuromuscular Junction: How Does Botox Work? Exocytosis is the process in which secretory vesicles are exported out of the cell membrane. These vesicles contain proteins which are then transported to parts outside the cell (Wilfred D. Stein‚ 2012). Neurotransmitters are released during this process into the synaptic cleft. These transmitters attract other transmitters to muscle membrane infoldings‚ which are called junction folds (Etherington & Hong‚ 2011). They diffuse across

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    A patient is admitted for electroconvulsive treatment (ECT). The physician orders the neuromuscular blocking agent metocurine iodide (Metubine) to reduce trauma by relaxing skeletal muscles. Explain the process of muscle contraction and how a neuromuscular blocking agent‚ such as Metubine‚ would interfere with muscle contraction. In order to understand how a neuromuscular blocking agent works one must first understand the process of muscle contraction and what has to take place in order for us

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    Absobue

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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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    Complete and submit Essay 4 (BIO201 LESN 10 Essay 4 N)‚ as instructed below: 1. A patient is admitted for electroconvulsive treatment (ECT). The physician orders the neuromuscular blocking agent metocurine iodide (metubine) to reduce trauma by relaxing skeletal muscles. Explain the process of muscle contraction and how a neuromuscular blocking agent‚ such as metubine‚ would interfere with muscle contraction. According to the Mayo Clinic website electroconvulsive treatment is the use of an electrical

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    How a Muscle Contracts

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    A motor neuron‚ a nerve ending that is attached to a muscle fiber in Petzold’s huge bicep‚ sends a message to contract. This message goes to the neuromuscular junction‚ which is the connection between the actual nerve fiber and muscle fiber. As the message to contract reaches the terminals a neurotransmitter‚ a chemical messenger for the body‚ is released into the gap between the terminal end‚ and the sarcolemma and motor end plate called the synaptic cleft. The particular neurotransmitter is called

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    Sensory Organs

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    References: 1. Rhoades and Pflanzer (1996) Human Physiology 3rd Edition: 2. Vander‚ Sherman & Luciano (1998) Human Physiology 7th Edition 9 NERVOUS SYSTEM TUTORIAL – NEUROMUSCULAR JUNCTION 1. An adequate stimulus will produce a change in the membrane potential of a sensory receptor cell. This change is known as a(n) (action/generator) potential. 2. The compression of the free nerve endings inside a Pacinian corpuscle causes

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    Micro Exercise 2

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    M14_MARI6128_10_SE_CH14.QXD 1/19/11 5:58 PM Page 193 NAME_________________________________ LAB TIME/DATE ________________________ EXERCISE R E V I E W S H E E T 14 Key: a. b. endomysium epimysium fascicle fiber myofibril myofilament perimysium sarcolemma sarcomere sarcoplasm tendon Microscopic Anatomy and Organization of Skeletal Muscle Skeletal Muscle Cells and Their Packaging into Muscles 1. Use the items in the key to correctly identify the structures described below

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    Exercise 2 Activity 1

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    the activated muscle fibers within one skeletal muscle. Correct answer: c. one motor neuron and all of the skeletal muscle fibers it innervates. 4. The motor neuron and muscle fiber intersect at what is called You correctly answered: d. the neuromuscular junction. 5. A twitch is Your answer : c. multiple contractile responses to a series of action potentials. Correct answer: a. one contractile response to a single action potential. 03/01/13 page 1 Experiment Results Predict Question: Predict

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    Muscle!

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    ___myosin_______________________. 3. What is a motor unit? Functional unit composed of a single motor neuron with the muscle cells it innervates 4. Name and describe the parts of a neuromuscular junction. Motor neurons connect to the sarcolemma of a muscle fiber at a folded motor end plate forming a neuromuscular junction. 5. What do acetylcholine and cholinesterase do? Ach initiates an electrical impulse in the sarcolemma and cholinesterase degrades Ach after it diffuse away from its receptor on

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