vrat variable would change in the nephron in the presence of aldosterone? Increase or decrease in that variable? decrease urine volume to zero increase urine volume decrease urine volume result in no change in urine volume

vrat variable would change in the nephron in the presence of aldosterone? Increase or decrease in that variable? decrease urine volume to zero increase urine volume decrease urine volume result in no change in urine volume

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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If the clearance of a solute is less than its filtered load__________. Group of answer choices must choose one answer the substance must have been secreted in the renal tubules the substance can give an estimate of plasma flow rate the substance must have been reabsorbed in the renal tubules the amount of the cleared substance will give an exact glomerular filtration rate (GFR)
Describe the components of the filtration membrane and the role it plays during urine formation.
If the efferent arteriole dilates, what is the effect on the glomerular filtration rate? Decreased GFR Increase GFR No effect on the GFR
Changes in blood pressure ( MAP ) have the potential to alter glomerular filtration rate ( GFR ) by directly changing which of the following factors below ? glomerular capillary hydrostatic pressure Bowman's capsule hydrostatic pressure glomerular osmotic pressure Bowman's capsule osmotic pressure
Describe a physiological stimulus for the secretion of aldosterone. What effect would this have on sodium and potassium reabsorption and secretion in the distal nephron?
Describe how each of the following works to regulate reabsorption and secretion, so as to affect urine volume and composition: renin-angiotensin system, aldosterone and antidiuretic hormone.
Given: Inulin is freely filtered in the glomerulus and not secreted nor reabsorbed in any appreciable amount at the nephron. If the concentration of inulin in the urine is 20 mg/mL, the concentration in blood plasma is 0.2 mg/mL plasma, and the rate of urine flow is 1 mL/min. a. What is GFR for this person? (Answer part a)
Explain the concept of a countercurrent multiplier system and how it works in the kidneys. What is the importance of this system to the function of the kidneys?
Diuresis is increased urinary excretion. 2-3 cups of coffee has a diuretic effect, most likely because it causes vasodilation of the afferent glomerular arteriole which leads to a change in glomerular filtration rate (how quickly/how much filtration is occurring). It also appears that caffeine has a natriuretic effect on the nephron, leading to decreased NaCl reabsorption. (from Rang et al., 2016; p594 & Shirley et al., 2002) Considering that information, describe the effects that Lacy's coffee consumption had on her hydration status
Which of the following urine osmolarities reflects a period of decreased ADH secretion? 301 mOm/L 201 mOsm/L 401 mOsm/L
Discuss the pressures of filtration indicating the hydrostatic and colloidal osmotic pressures responsible for moving substances in or out of the glomerulus. Name each pressure and write an equation that indicates the pressures affecting glomerular filtration.
What is the effect of angiotensin II on the glomerular filtration rate? vasoconstricts the afferent arteriole, decreasing the GFR vasoconstricts the afferent arterioe. increasing the GFR vasodilates the afferent arteriole, decreasing the GFR vasodilates the afferent arteriole, increasing the GFR