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Short answer Facilitated diffusion is a passive process in which membrane channels mediate the transport of polar, or big molecules that are not solvable in the cell membrane. Co-transport, on the other hand, is active transport, as it depends on the electrochemical gradient of ions across the cell's membrane, particularly Na+. Because ATP or other energetic ...


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http://en.wikipedia.org/wiki/Carbon_dioxide#Toxicity "In concentrations up to 1% (10,000 ppm), it will make some people feel drowsy.[83] Concentrations of 7% to 10% may cause suffocation, even in the presence of sufficient oxygen, manifesting as dizziness, headache, visual and hearing dysfunction, and unconsciousness within a few minutes to an hour. ... ...


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"Specifically, what is the difference between facilitated diffusion carrier processes (passive) and secondary active transport co-transport processes (active)?" Facilitated diffusion creates alternative paths for polar/charged substances to move down their electrochemical gradients across the hydrophobic interior of the membrane, thus greatly speeding up ...


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Medicine is not my field, but I want to point out two things: The former words have latin roots, and historically latin was the international language of science. Therefore, nomenclature in different scientific fields are often based on latin. The former words describe tissues and the related functions/processes (e.g. renal = kidney + related tissues + ...


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I found a nice article that has insights to this matter. As posted before me it is true that only adults, but not juvenile individuals show this difference. Direct and indirect effects of sex hormones on bone marrow erythropoiesis and renal erythropoietin production has been proven, but it works in both sexes the same way. Females are capable to elevate ...


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I am assuming that your question is: "why can a human intervention improve health?". Let me know if I misunderstood your question. Why can a human intervention improve health? Let's first avoid going into the details of your example. It is quite obvious that human intervention can often improve health in a way that your body alone cannot. To me, an ...


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An allergic reaction requiring an epipen can be caused by swelling in the throat and/or bronchoconstriction (spasms decreasing the diameter of bronchioles). Bronchoconstriction can occur in the absence of soft tissue swelling in the lips, tongue and throat, and vs. versa. Epinephrine reduces pharyngeal edema (swelling) because it is a potent vasoconstrictor ...


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Actually there is fatty acid transport through the BBB. Maybe the rate of this transport is not enough, I don't know, I think it does not really matter. What really happens here, that the liver prepares the fatty acids, so the brain can use them more easily in the form of ketoacids to produce energy. fatty acid catabolism shared between the liver and ...


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"Hepatic glucose production" is the gluconeogenesis process (the opposite of the gycolysis process), that is the formation of glucose primarily from lactate and amino acids. This process takes place in the liver's cells and it is regulated by hormones (insulin and glucagon). Look here and here for a better explanation!


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Human body is a glucose driven machine which intake carbohydrates and converts to glucose. Energy is yielded from the glucose and glucose is stored as glycogen. When the carbohydrate intake is somehow reduced then body will shift its mechanism and uses the fatty acids to produce energy. Liver synthesis ketones from fatty acids in our diet or from body fat. ...


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Basic sigmoidal curve looks like that: zero at $-\inf$ and one at $+\inf$. All in between should look like an integral of gaussian distribution. Take a look on this wiki page for more information. Now, the question, why sigmoidal curve is integral of gaussian function, I will leave out for now. My understanding is that gaussian distribution tells you how ...


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From this post. The IC50 is the concentration of inhibitor required to reduce the activity of a molecule/protein by one-half. It is the inverse of EC50. Usually inhibition curves looks sigmoidal so the IC50 is the middle point of the S curve. Here an example. (Note that the Y-axis can be pretty much anything, like enzyme activity and the X-axis is the ...


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I'd suggest reading wiki first. Autonomic nervous system, the one that regulates breathing rate, heart rate and other physiological processes as a function of circadian time, regulates secretion of gastric acid. Vagus nerve, part of parasympathetic nervous system (the one responsible for "rest and digest" part of behavior, opposite to sympathetic "fight or ...


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Thank you for the query, I would have search would have shown that, we are the pioneers to first use Turmeric against snake venom. Be it, Cobra, Krait or Viper. It is the universal truth that, all the snake venom is 90% protein and out of that, 60% is the lethal inflammatory toxic enzyme called Phospholipase A2 (PLA2). PLA2 is an enzyme that breaks down ...


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I looked in Taiz and Zeiger. Plant Physiology 5th ed and this is what I found: Plant growth is concentrated in localized regions of cell division called meristems. Nearly all nuclear divisions (mitosis) and cell divisions (cytokinesis) occur in these meristematic regions. In a young plant, the most active meristems are called apical meristems; they ...


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When the face of an infant is exposed to cold water, the heart slows down and blood is shifted away from the peripheral muscles to conserve oxygen for the brain and heart, and they typically hold their breath. The reflex is the same one that protects babies from getting milk in their lungs. The reflex kind of reroutes the entire circulatory system to save ...


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A bud is capable of developing into a new individual while meristem can develop into any part of the individual. Buds can produce shoots, flowers, etc. while meristems have more variability - capable of developing into the tissues within the stem, a new individual, etc.


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Stress is the reaction, which our body reacts against the pressure or tension. There are many impact of stress on the human body, which includes Emotional: Moodiness, short temper, agitation, inability to relax, feeling lonely and always depressed. Cognitive: Memory problems, unable to concentrate, very poor judgment, negative thoughts, always anxious ...


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It's called the Diving reflex, also known as the bradycardic response. It goes away around six months. From https://www.breatheology.com/articles/mammalian-dive-response/ Another action of the diving response can be observed in infants when they are under water. The windpipe by the vocal chords sponta­neously closes to prevent water from entering the ...


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Could it be beneficial to artificially induce fever in a person who has an illness if they are not already experiencing fever? No, not really. Pretty much the only use of hyperthermia in medicine is in the treatment of cancer. If you google "use of hyperthermia in medical treatment", you'll likely only find two kinds of hits: those for cancer treatment ...


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Actually, hyperthermia is a known treatment for a range of diseases, including cancer. Induced hyperthermia can be whole-body as well as local/regional and is under investigation in multiple studies (for example).



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