WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 21, Problem 12SA
Summary Introduction
To review:
The factors that influence the amount of urine produced by a human, in one day.
Introduction:
Urine is produced in the kidneys due to filtration of blood.
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Ingestion of carbonated soft drinks, coffee, and tea instead of water has caused us to be chronically dehydrated. Discuss the impact of this dehydration on overall health and how concentrated urine, indicated by its yellow color, signals the need for more water consumption, while clear and colorless urine indicates that water intake is sufficient.
List some of the factors that affect the daily urine volume.
Describe the factors that influence glomerular filtration pressure and the glomerular filtration rate (GFR).
Chapter 21 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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- Which of the following does not contribute to the process of filtration? (a) active transport by epithelial cells lining renal tubules (b) large surface area for filtration (c) low permeability of glomerular capillaries (d) high hydrostatic blood pressure in glomerular capillaries (e) podocytesarrow_forwardDescribe the three mechanisms that explain thekidney’s ability to concentrate urine.arrow_forwardCompare urinalysis data from a person with diabetes to data from a person without diabetes.arrow_forward
- . Calculate creatinine clearance (and hence an estimate of glomerular filtration rate, GFR) for a 40 year old man from the data below: Urine creatinine (U) = 90 mg/dL 24 hour urine volume = 1.44 L Serum creatinine (P) = 2.0 mg/dL Comment on the value of GFR.arrow_forwardIf Glomerular filtration rate (GFR) is 125 mL/min, how much GF will be produced in a day? 180,000 mL?arrow_forwardName the four major processes in urine productionarrow_forward
- Individuals 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_forwardMake a schematic diagram showing the process of urine formationarrow_forwardWhich of the following pathways best describe the structures which urine has to flow through before being excreted out of the body? (Hint: some structures may be omitted, so just make sure the general order is correct) 1-Collecting duct -> bladder -> ureter 2-Collecting duct -> ureter -> bladder -> urethra 3-Collecting duct -> urethra -> bladder -> ureter 4-Major calyx -> minor calyx -> renal pelvis -> urethraarrow_forward
- Describe the path of urine from the from formation to exiting the body by filling in the blanks below: MINOR CALYX → ㅋ ㅋ →URETHRAarrow_forwardUrine consists of water and solutes added by processes of (blank) and (blank) minus water and solutes removed by process of: (blank) .arrow_forwardYou need to evaluate kidney function in a 55-year-old obese man with type 2 diabetes; you ask him to collect his urine over a 24-hour period. He collects 4,320 mL of urine. The clinical laboratory returns the following results from analysis of his urine and plasma samples: Plasma creatinine = 3.0 mg/100 mL Urine creatinine = 40 mg/100 mL Plasma potassium = 5.0 mmol/L Urine potassium = 20 mmol/L What is the net renal tubular secretion rate of potassium in the patient described in question? Group of answer choices .280 mmol/min .140 mmol/min .060 mmol/min .030 mmol/minarrow_forward
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