Why is control over blood [Ca2+] and [Red Blood Cell] crucial? Choose one hormone involved in either of these homeostatic systems that regulate the concentration of these ions/cells and describe how it functions in homeostasis. Remember to include the name of the gland that secretes it. Part B Choose one molecule that is reabsorbed by the nephron and describe the process by which it is reabsorbed.

Why is control over blood [Ca2+] and [Red Blood Cell] crucial? Choose one hormone involved in either of these homeostatic systems that regulate the concentration of these ions/cells and describe how it functions in homeostasis. Remember to include the name of the gland that secretes it. Part B Choose one molecule that is reabsorbed by the nephron and describe the process by which it is reabsorbed.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter12: The Urinary System

Section: Chapter Questions

Problem 3CT: Fatty tissue holds the kidneys in place. Extremely rapid weight loss may cause this tissue to shrink...

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Fatty tissue holds the kidneys in place. Extremely rapid weight loss may cause this tissue to shrink so that the kidneys slip from their normal position. On rare occasions, the slippage can put a kink in one or both ureters and block urine flow. Suggest what might then happen to the kidneys.
As the text noted, two-thirds of the water and solutes that the body reclaims by reabsorption in nephrons occurs in the proximal tubule. Proximal tubule cells have large numbers of mitochondria and demand a great deal of oxygen. Explain why.
Why is excretion important in order to achieve osmotic balance?
Which of the following is NOT a function of the kidneys? * Metabolism of Vitamin D Secretion of a hormone that acts to decrease mean arterial pressure Regulation of plasma [Na+] Secretion of a hormone that affects the hematocrit Gluconeogenesis
are both statements correct? Renin converts angiotensinogen to angiotensin I, which is then converted to angiotensin II by angiotensin-converting enzyme. Angiotensin II stimulates aldosterone secretion, and aldosterone decreases the rate of Na+ and Cl− reabsorption from the nephron. Atrial natriuretic hormone, secreted from the right atrium in response to decrease in blood pressure, acts on the kidney to decrease Na+ in the urine.
Select the incorrect statement ANF promotes loss of Na* thereby increasing urinary output Drugs that block angiotensin II production are widely used to treat hypertension. Dialysis is selective diffusion of nitrogenous wastes from dialysate to blood Our lungs remove nearly 200 ml/min of CO2
Many systems of the body work together to achieve homeostasis. Identify ONE part of the nephron that interacts with the endocrine system, and explain how these 2 systems work together to maintain osmoregulation
Renin is an important proteolytic enzyme produced by the kidney, involved in the control of salt/water balance in the body. Explain the source of renin, how it is secreted and how it acts to ultimately influence plasma volume. A separate hormonal system exists for directly controlling kidney water reabsorption. Explain how this hormone is released and how it exerts its renal effects.
The cells lining the nephron component marked by the black asterisk 1. bind the 'parathyroid hormone' to increase the reabsorption of calcium ions from the filtrate into peritubular capillary blood 2. Function to regulate pH of the blood by secreting bicarbonate ions and reabsorbing hydrogen ions 3. bind the hormone 'aldosterone' to increase sodium reabsorption from the filtrate (with passive reabsorption of water) Choose from the following: (A) 1 (B) 2 (C) 3 (D) 1 and 2 (E) 2 and 3 (F) 1, 2, and 3
A patient has essential hypertension, and with a healthy lifestyle and medication, he is able to maintain normal blood pressure on a single antihypertensive medication. The medication he takes is called an angiotensin converting enzyme inhibitor, or ACE inhibitor, which blocks the activation of angiotensin II. Describe at least two mechanisms by which angiotensin II targets the kidneys to increase extracellular fluid volume and, therefore, increase blood pressure.
And which of the following factors stimulate these cells to release renin? Select all that apply. Increased parasympathetic nervous system activity. Increased sympathetic nervous system activity. O A increase in plasma osmolarity. A decrease in plasma osmolarity. An increase in GFR detected in the thick ascending limb of the Loop of Henle. O A decrease in GFR detected in the thick ascending limb of the Loop of Henle. O An increase in pressure in the afferent arteriole detected by renal baroreceptors. O A decrease in pressure in the afferent arteriole detected by renal baroreceptors. An increase in filtrate osmolarity. O A decrease in filtrate osmolarity.
Renal regulation of Na and K blood levels; Na+ levels are adjusted by changing amount —, while K+ levels are adjusted by changing amount — a. Na=secretion; K+ = secretion b. Na= reabsorption; K= secretion c. Na= reabsorption; K= reabsorption d. Na= secretion; K=reabsorption