Concept explainers
To determine: The main actions of renin-angiotensin-aldosterone pathway.
Introduction: The kidney is an important organ of the excretory system, and nephron is the basic structural unit of kidney. The main function of nephron is ultrafiltration. It removes waste products, ions, and excess water from the blood, and returns the required molecules back to the blood. The glomerular filtration rate (GFR) refers to the rate of flow of filtered fluid through the kidney.
To compare: The main actions of this pathway with the actions of atrial natriuretic peptide (ANP).
Introduction: Blood pressure is the force that moves the blood through the circulatory system. Angiotensin, antidiuretic hormone, aldosterone, and atrial natriuretic peptide are hormones that participate in regulating the blood pressure.
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Biology (MindTap Course List)
- Why is excretion important in order to achieve osmotic balance?arrow_forwardExplain the effect of the renin-angiotensin-aldosteronesystem on water-salt balance.arrow_forwardDescribe how the renin-angiotensin-aldosterone system, antidiuretic hormone, and atrial natriuretic peptide each work to regulate reabsorption and secretion?arrow_forward
- true or false Aldosterone is required to restore water from loop of Henle, and reabsorption of Na+ from this segment is increased by ADH, allowing equilibration of water with the hyperosmotic interstitiumarrow_forwardIndividuals with a rare condition called diabetes insipidus do not produce vasopressin. How would urine output of an individual with diabetes insipidus compare with that of a healthy individual?arrow_forwardList the Pathways by which decreased plasma volume leads, via the renin-angiotensin system and aldosterone, to increased Na1 reabsorption by the cortical collecting ducts?arrow_forward
- Explain the interactions between ADH, angiotensin-renin-aldosterone P, GFR, in a patient with acute hemorrhage.arrow_forwardThe reabsorption of water, Cl–, and glucose by the PCT islinked to the reabsorption of Na+, but in three very different ways. Contrast these three mechanismsarrow_forwardContrast the mechanism of reabsorption for glucose and urea. Which one shows a Tm, and why?arrow_forward
- How do diuretics work to reduce excess fluid in the body? Describe the mechanisms of action for three types of diuretics.arrow_forwarddrugs known as potassium-sparing diuretics work by blocking the effects of aldosterone on the kidney. what effect would these drugs have on the amount of urine produced, on the blood pressure, and on potassium ion concentration in the blood? could these drugs have a negative impact on the acid-base balance of the body? explain.arrow_forwardDescribe the response of the renin-angiotensinaldosterone hormone mechanism to a decrease in bloodpressure. How are extracellular fluid volume and urinevolume affected?arrow_forward
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