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Course Hero is not sponsored or endorsed by any school or university. This textbook contains questions and options associated to the query you are viewing. Question 40 Which of the next is FALSE concerning the membrane… For unlimited entry to Homework Help, a Homework+ subscription is required. Explain the endosymbiotic principle of the origin of eukaryotic cells and talk about at least three examples of proof supporting this theory. If the statement is false, change the underlined word or phrases to make the assertion true.
Multiple sclerosis is an acquired, chronic autoimmune disorder affecting the CNS. Common presentations of the disease are optic neuritis, transverse myelitis, and cerebellar symptoms corresponding to ataxia. In utero and early life arsenic exposure in relation to long-term well being and disease.
If working at room temperature, about 21 °C, the calculated constants are approximately 58 mV for K+ and Na+, −58 mV for Cl− and 29 mV for Ca2+. At physiological temperature, about 29.5 °C, and physiological concentrations , the calculated potentials are approximately 67 mV for Na+, −90 mV for K+, −86 mV for Cl− and 123 mV for Ca2+. In a healthy animal cell Na+ permeability is about 5% of the K+ permeability and even much less, whereas the respective reversal potentials are +60 mV for sodium and −80 mV for potassium .
P-glycoprotein is found in the apical membrane of the complete intestine from duodenum to rectum, with a excessive expression within the enterocytes of the small intestine. It reduces the oral availability of medicine that are its substrates. This video discusses the premise of the resting membrane potential. Describe how a resting membrane potential is established and maintained.
If a threshold potentialis reached, then an motion potential is produced. Additionally, if the threshold is reached, then the response of the same magnitude is at all times elicited, no matter the power of the stimulus. The absolute refractory interval which occurs once the sodium channels close after an AP.
Discuss these features with ladies in reproductive years before beginning therapy with these medicine. Thymectomy leads to complete remission of the illness in a selection of patients. However, the prognosis is extremely carteret craven real estate variable, ranging from remission to death. Sensitization to a foreign antigen that has cross-reactivity with the nicotinic ACh receptor has been proposed as a explanation for myasthenia gravis, but the triggering antigen has not but been identified.