Osmoregulation is a process that helps control the amount of water inthe blood stream. One of the main hormones involved in this is ADH,which is released by the posterior pituitary glanda) With reference to at least this hormone, explain the negativefeedback mechanism that occurs when the body isdehydrated.b) Following on from the above, explain what happens whenthere is too much water in the blood stream. Again you shouldrefer to ADH as part of your answer.

Antidiuretic hormone or ADH, is synthesized by nerve cells located at the base of the brain known as…

Answered: Osmoregulation is a process that helps…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Which of the following would occur as a result of increased renin release by the kidneys? Select one: a. An increase in blood volume b. An increase in urine output c. A decrease in blood pressure d. An increase in vasodilator secretion e. A decrease in aldosterone Clear my choice
Select the best answer or answers from the choices given: Atrial natriuretic peptide secreted by the heart has exactly the opposite function of this hormone secreted by the zona glomerulosa: (a) antidiuretic hormone, (b) epinephrine, (c) calcitonin, (d) aldosterone, (e) androgens.
If aldosterone causes exchange of sodium ion for potassium ion: A) Then the adrenal cortex regulates serum pH B) The posterior pituitary is responsible for serum potassium ion levels C) The adrenal medulla is critical to sodium and potassium levels in the blood D) None of these answers is correct E) An adrenal tumor that secretes aldosterone can result in abnormal potassium ion levels
Chalcedonia has a pituitary tumor which increased release of ADH. Which of the following symptoms would you expect to observe as a result of this condition? Group of answer choices Glycouria Polyuria increased osmotic concentration of the blood of the urine elevated blood pressure none of the above
Hormones released by endocrine glands 1) ACTH 2) Cortisol 3) Thyroxine 4) Aldosterone 5) Epinephrine 6) ADH. Match the following to the number above a) ________: returns the sodium ion concentration in the blood back to normal after sweating. b) ________: Decreased secretion leads to an excessive amount of urine. c) _________: Stimulates the release of the hormone responsible for increases in blood sugar. d) ________: Excessive secretion leads to weight loss.
In a different instance of (d) two intants suspected to have a defi- ciency of the PDH complex because of severe lactic acidosis, tissue biop- sies could not be taken to measure URINARY EXCRETION OF PYRUVIC AND a-KETOGLUTARIC AcıDS Pyruvic Acid (umol/mg of creatinine) a-Ketoglutaric Acid (μmol/mg of creatinine) Age Special Diet or Drugs Patient G. M. enzyme activities. Instead it was no- ticed that there were high concentra- tions of organic acids in the urine. Typical results are tabulated in the ta- ble on the right. Identify the enzyme defect and explain why it presents this metabolic pattern. What other meta- bolic breakdown products likely were also detected especially following a high protein diet but are not listed? Name the defective enzyme. 5 wk 2.26 3.57 7½ wk 2.10 3.39 11 wk 1.35 4.63 12 wk After 18-hr fast 1.87 0.44 High-protein, low-carbohy- drate diet 15 wk 1.62 5.38 Patient D. M. 1 day 13 days 24 days 0.87 0.44 Thiamine 0.45 3.44 0.33 2.47 4 wk 0.53 1.23 6 wk Thiamine…
Identify the four hormones that are involved in regulating fluid output.
Hyperaldosteronism (excessive aldosterone release) can be caused by many disease states including tumours in the adrenal gland. By now, we should be familiar with how this will affect sodium balance and blood pressure, but how would hyperaldosteronism affect potassium levels and why? Select one potassium effect (a or b) and one cause (c-f). a. The patient will become hyperkalemic. O b. The patient will become hypokalemic. O c. Aldosterone increases sodium reabsorption in the proximal tubule. Increased sodium reabsorption increases water reabsorption, which then establishes a concentration gradient to increase potassium reabsorption. Od. Aldosterone increases sodium reabsorption in the collecting duct. Increased sodium reabsorption increases water reabsorption, which then establishes a concentration gradient to increase potassium reabsorption. O e. Aldosterone increases sodium reabsorption in the collecting duct by increasing expression of EnaCs, sodium/potassium exchangers, and…
Increased concentrations of aldosterone lead to ... a) Increased reabsorption of Na + b) Decreased blood volume c) Increased permeability to water in distal tubules d) Decreased reabsorption of Cl-
Nathan has Addison’s disease (insufficient aldosterone release). How does this affect his plasma Na+ and K+ levels? How does this affect his blood pressure? Explain.
Part 2: Osmoregulation is a process that helps control the amount of water in the blood stream. One of the main hormones involved in this is ADH, which is released by the posterior pituitary gland a) With reference to at least this hormone, explain the negative feedback mechanism that occurs when the body is dehydrated. b) Following on from the above, explain what happens when there is too much water in the blood stream. Again you should refer to ADH as part of your answer.
Aldosterone ...... A) is secreted by the posterior lobe of the pituitary gland (neurohypophysis) B) increases potassium concentration in blood C) production is greatly influenced by ACTH

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