ADH has receptors on which target tissues? Pumping cells? The nephron of the kidney? Vascular circular smooth muscles? Autorhythmic cells? The afferent arteriole of the kidney
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A: Influx refers to an inflow of ions or molecules from extracellular space to intracellular space.
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- How the sodium potassium pump works in primary active transport?The renin angiotensin aldosterone system is responsible for the regulation of ?What action is initiated when lymph enters a lymph node through the afferent vessel?a 54 year old man develops vomiting and diarrhea over a 24 hour period. his serum sodium concentration is 140 mEq/L. Intravenous infusion of isotonic saline is initiated . which of the following changes and intracellular and extracellular fluid volume is most likely to result from this infusion a ICF volume : decreased , ECF decreased b. ICF volume :increased , ECF decreased c. ICF volume : increased , ECF. increased d. ICF volume : increased , ECF. no change e. ICF volume : no change , ECF increasedMr. Duderino comes to the doctor with high blood pressure. Test show that he also has elevated levels of renin in his blood and atherosclerotic plaques that have nearly blood blow flow through his renal arteries. Mr. Gregory is puzzled. Explain to him how decreased blood flow in his renal arteries could cause renin secretion to increase. Map the pathways through which elevated renin causes high blood pressure for Mr.Gregory
- The following events occur when the body loses water by sweating.I - Hypothalamus stimulates the posterior pituitary glandII - Osmotic pressure of blood stabilizesIII - ADH causes kidneys to reabsorb more waterIV - Osmotic pressure of blood increases In what order do these events occur?If a positive ion is reabsorbed across a kidney membrane: A) A negative ion must be retained in reserve at the membrane B) A negative ion must be secreted across the membrane C) The same positive ion must be passively moved across the membrane D) A different positive ion must be secreted across the membrane E) None of these answers is correctIn the collecting duct the secretion of K+ is regulated and secreted by what causing a response to what? And causes this effect and in turn helps what?
- 1)Where are neurotransmitters released from? A) dendrites B) axon terminal C) nodes of Ranvier D) postsynaptic membrane E) presynaptic membrane 2) What is the function of antidiuretic hormone? A) It increases the permeability of the collecting ducts to sodium, so more is reabsorbed B) It causes a high volume of less concentrated urine to be produced C) It increases the permeability of the collecting ducts to water, so more is reabsorbed. 3)Inhibitory neurotransmitters would NOT be expected to A) bind to receptors B) open K+ channels C) open Na+ channels D) hyperpolarize the membrane 4) In countercurrent exchange The flow of fluids in opposite directions maintains a favorable diffusion gradient along the length of an exchange surface Oxygen is exchanged for Carbon Dioxide Double circulation keeps oxygenated and deoxygenated blood separate…How does the hormone Angiotensin II affect MAP? Select only one answer. 1) it increases CO by increasing HR and SV 2) it decreases MAP by causing systemic vasodilation 3) it increases MAP by stimulating the kidneys to retain Na+ and therefore water which increases blood volume and therefore MAP 4) it increases MAP by causing rapid vasoconstrictionWhen the thickening of connective tissue reduces blood entering the afferent arteriole. Will JG cells secrete more or less renin in response?
- Which of the following best chracterizes a primary hyperaldosteronemic state? Answers to choose: A urine potassium of 35 mmol/d, A urine potassium of 21 mmol/d?, A spot urine test where the sodium levels are greater than potassium levels?, Have long half-lives?, Circulating blood catecholamines are 99% bound to albumin?, Mone of the above accurately describes catecholamines? no references, just homework.Name the gland whose secretion is vasopressin.Extracellular fluids have relatively? A. high sodium and low potassium levels. B .high sodium and high potassium levels. C. higher concentrations of potassium, magnesium, phosphate, and D. sulfate ions. E. low sodium and low potassium levels. F. low sodium and high potassium levels.