can have it more than once. The differences between a virus and a bacterium are thus: * Bacteria are unicellular‚ Viruses have no cells. * Bacteria have DNA and RNA floating in cytoplasm‚ and a cell wall and membrane. Viruses have DNA or RNA enclosed in a protein coat. * Bacteria have Ribosomes‚ whereas viruses do not. * Bacterial infections are localised‚ yet viruses are systemic. As you can see‚ there are a load of differences between viruses and bacteria‚ however there
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Intrapartum period Labor and delivery: Definition: labor is the process by which the products of conception are expelled from the body. Delivery refers to the actual birth. Adaptive Processes Defi nition: during latter months of pregnancy‚ the fetus adapts to the maternal uterus enabling it to occupy the smallest space possible. The term Attitude refers to the posture the fetus assumes in utero; fetal lie is the relationship of the long axis of the body to the long axis of the mother. Presentation:
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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‚ the structure differences between
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Chapter 10- Muscle Tissue Choose the best answer to each of the following questions. 1) How does muscle tissue contribute to homeostasis? A) by generating heat that helps maintain body temperature B) by moving materials through the body C) by pulling on bones to move the body D) A and B are correct. E) A‚ B and C are correct. 2) The primary function of muscle is A) conversion of chemical energy into mechanical energy. B) conversion of chemical energy into radiant energy. C) conversion
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Excitation Contraction Coupling Process The sequence of events that converts action potentials in a muscle fiber to a contraction is know as excitation contraction coupling. In order for a skeletal muscle fiber to contract‚ it has to get a signal from the nervous system. The part of the nervous system that it gets a signal from is called a motor neuron. An electoral signal‚ called an action potential travels down the axon and to the axon terminal. At the end of the motor neuron are structures
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would explain the difference in abilities between humans and other primates (3). Whatever the case may be‚ it has nevertheless served an important role in the advancement of human capabilities‚ allowing
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It’s very important for a medical assistant to know the difference between Alzheimer and dementia. Also‚ it’s very important to educate yourself and do research on Alzheimer and dementia.They both based on memory loss that changes an individual’s daily life. But Alzheimer and dementia are different. Dementia are caused by strokes. Alzheimer is unknown cause the patient wouldn’t know about. Both dementia and Alzheimer is based on memory loss that changes an individuals daily life. Like with most
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earn. When one speaks of an independent or a strong woman‚ one generic poster is pictured. J. Howard Miller’s “We Can Do It!” with an image of a woman‚ flexing her bicep is a famous piece of propaganda created during World War II. She flexes her muscles in a way only men during that time period were socially allowed to do. When this photo is spoken of‚ the women in the picture is never referred to as a lady. She is referred to as a strong woman‚ instead. Beyonce Knowles‚ a famous singer addresses
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The muscle physiology of skeletal muscle was observed by using electrical‚ physical‚ and neural stimulations of an isolated 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
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Smooth muscle- are involuntary muscles found in the walls of hollow organs like the stomach‚ intestines or bladder. Smooth Muscles have many functions in the body‚ but one of the functions of smooth muscles in the bladder contracts to push urine out of the body. Skeletal muscle- Skeletal Muscles are muscles attached to the skeleton. The skeletal muscles main function is to contract to support the skeleton in movement. Skeletal muscles are voluntary because we have complete control of the movements
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