builds from biological molecules‚ which are organized into complex structures referred to organelles‚ which are also one of the properties of cells. Within this complex system‚ life can be understood as many descending levels. From molecules‚ organelles are formed‚ organelles create cells‚ cells make up tissue‚ tissues are part of systems and organs and from organs organisms are formed. This hierarchy of biological organization makes up our ecosystem and describes the web of complex interactions. This
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Jesslynn Anderson Ferrell Acc Chemistry 12 September 2013 Xanax I chose the topic Xanax because my Mother takes it and I’ve wanted to learn more about it and what it can do to the human body. The drug Xanax can either be very helpful or very deadly‚ depending on how you use it. If you take the registered amount your doctor has prescribed you should be fine‚ but if you take more then needed it could cause some very deadly actions and/or emotions. Xanax has three names‚ the generic name is
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Perioperative 5. Benzodiazepines ( Lorazepam/ Ativan) Classification: anesthetic adjuncts‚ antianxiety agents‚ sedative hypnotics Perioperative use: Decreases preoperative anxiety and provides amnesia. Adverse reactions: APNEA‚ CARDIAC ARREST‚ bradycardia‚ hypotension. Contraindications: Severe hypotension; Sleep apnea; OB‚ Lactation: Use in pregnancy and lactation may cause CNS depression. Do not use for pt. with seizure disorders. Interactions: Additive CNS depression with other CNS depressants
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biologist named Otto Loewi‚ who would later win the Nobel Prize for his work. Acetylcholine has many functions: It is responsible for much of the stimulation of muscles‚ including the muscles of the gastro-intestinal system. It is also found in sensory neurons and in the autonomic nervous system‚ and has a part in scheduling REM (dream) sleep. The plant poisons curare and hemlock cause paralysis by blocking the acetylcholine receptor sites of muscle cells. The well-known poison botulin works by preventing
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Aerobic metabolism leads to increased ATP/ADP ratios and ATP sensitive K+ channels close. Depolarization activates voltage gated Ca2+ channels and insulin exocytosis. Insulin binds to the insulin receptor and activates a tyrosine kinase second messenger system. Auto phosphorylation of the insulin receptor causes insulin-dependent GLUT transporters to be inserted into the cell membranes of insulin dependent cells like muscle cells. Glucose uptake and utilization promotes the use of glucose and the lowering
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following: Explain the communication process of neurons in the brain. List some common neurotransmitters and describe their effect on behavior. There are 2 neurons afferent neurons these carry messages to the central nervous system. Efferent neurons carry messages from the central nervous system. Neurons communicate through voltage changes. This can sometimes lead to quick action reaction sequence of voltage alterations. An example would be when you touch something hot and you pull your hand away immediately
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ALHN 110 Mrs. Anders November 15‚ 2007 Multiple Sclerosis Multiple sclerosis is a disease of the central nervous system that affects the brain‚ spinal cord‚ and the optic nerves. In MS‚ the myelin sheath‚ a fatty tissue that surrounds and protects nerve fibers‚ is damaged. Inflammation also occurs which further destroys the sheath and eventually the nerves that
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studies have also shown that coffee may have benefits‚ such as protecting against Parkinson’s disease‚ type 2 diabetes and liver cancer also it has high levels of antioxidants. The main ingredient in coffee is caffeine‚ which acts as a central nervous system stimulant. Stimulants can give you a false feeling of energy‚ causing your body to experience a "spike and crash" syndrome. They can cause you to become restless and jittery. When we rely on stimulants for our energy‚ we take our bodies on a sort
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Homeostasis Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. |Substance |In Bowman’s Capsule |In Urine | |X |0.1 g/L |0.1 g/L | |Y |0.1 g/L |1.0 g/L
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QUILONA‚ KLARISSE JANE A. BSP-1B Animal Tissues 1. Epithelial Epithelial tissue is made of closely-packed cells arranged in flat sheets. Epithelia form the surface of the skin‚ line the various cavities and tubes of the body‚ and cover the internal organs. Subsets of Epithelia Epithelia that form the interface between the internal and external environments. Skin as well as the lining of the mouth and nasal cavity. These are derived from ectoderm. Inner lining of the GI tract‚ lungs‚ urinary
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