it to different parts of the body. It does this via the spinal cord‚ which runs from the brain down through the back and contains threadlike nerves that branch out to every organ and body part. When a message comes into the brain from anywhere in the body‚ the brain tells the body how to react. For example‚ if you accidentally touch a hot stove‚ the nerves in your skin shoot a message of pain to your brain. The brain then sends a message back telling the muscles in your hand to pull away. Luckily
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Axia College Material Appendix L CardioLab Report Full Name || Date | 01/02/2011 | Use this document to report your findings from the CardioLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. * Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your CardioLab online notebook into this section. * Exploration: Answer the questions. The questions in the Exploration section are the same questions in your CardioLab
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system is composed of all nerve tissues in the body. The functions of nerve tissue are to receive stimuli‚ transmit stimuli to nervous centers‚ and to initiate response The nervous system has two distinct parts -- CENTRAL and PERIPHERAL. The central part is made up of the brain and spinal cord. The peripheral part of the nervous system is said to be peripheral because it is outside the central nervous systems. The human nervous system contains approximately 10 billion nerve cells. These neurons
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1. What is a neuron? o The individual nerve cell‚ comprised of the axon‚ dendrites‚ and cell body. 2. How many neurons in the nervous system? o 86 billion 3. Function of cell body‚ dendrites‚ and axons. o Cell body: Contains the nucleus and other major components. o Dendrites: Branch out from the cell body and receive messages from other neurons. o Axons: Carries messages away from the cell body to the dendrites. 4. Define polarization/depolarization. o Polarization: Resting state of neuron
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gastrocnemius muscle from Rana pipiens. The gastrocnemius receives signals from the action potentials of the sciatic nerve. The muscle contraction is caused by the binding of a neurotransmitter once the action potential reaches the neuromuscular junction. Stimulation of the muscle and the sciatic nerve allows for recording and measuring of these properties. We observed twitch recruitment of the nerve and muscle length-tension relationship of the skeletal muscle‚ summation of skeletal muscle contractions‚ tetanus
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working to get more knowledge and understand the process of why the immune system destroys or attacks the nerve insulating substance called myelin. Explaining to a patient about brachial plexus I would just simplify it by explaining how there is damaged to the brachial nerves and the symptoms include a limp or paralyzed arm. Furthermore‚ I would include the brachial plexus is a network of nerves that conducts signals from the spine to the shoulder‚ arm‚ and hand. They may experience lack of muscle
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of this range‚ there is a system in body called the negative feedback system‚ which is where the systems attempt a normal body temperature. When temperatures go outside of this range in a particular place in the body‚ a stimulus to a receptor sends nerve impulses to a regulating centre in the brain. The brain sends an effector to the spot to
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organs‚ and coordinating the activity of muscle. The nervous system of vertebrate animals is divided into the central nervous system and the peripheral nervous system(PNS). The CNS comprises the brain and spinal cord‚ whereas the PNS consists of the nerves and neurons that reside or extend outside the central nervous system‚ such as to serve
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diameter in children‚ or more than 15 millimeters across in adolescents and adults and freckling in the area of the armpit or the groin. Two or more growths on the iris of the eye‚ known as Lisch nodules or iris hamartomas. A tumor on the optic nerve‚ known as optic glioma. Abnormal development of the spine‚ scoliosis‚ the temple‚ sphenoid‚ bone of the skull‚ or the tibia‚ one of the long bones of the shin. Many children with Neurofibromatosis have larger than normal head circumference and are
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choices. Today we will discuss a few topics; pain‚ nerve response‚ drug of choice to aid the pain and what action and reaction to expect. We will talk about Lidocaine it’s a topical gel. Topical means you apply it on the skin or the epidermis. Epidermis is the medical term for skin and dermis the layer that underlying the epidermis. These are the first and second layers of skin. Your reaction to pain is located in these layers of skin cause are nerve receptors are located in the epidermis and dermis
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