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Ch. 24 The Urinary System
Chapter 24, Problem 24.15a

Normal urine should have which of the following properties? Circle all that apply.


a. Translucency
b. Yellowish pigment
c. Cloudy appearance
d. pH less than 4.5

Verified step by step guidance
1
Understand the normal properties of urine: Urine is typically clear and has a yellowish color due to the pigment urochrome.
Consider the translucency of urine: Normal urine should be translucent, meaning it is clear enough to see through but not completely transparent.
Evaluate the color of urine: The yellowish pigment is a normal characteristic due to urochrome, a byproduct of hemoglobin breakdown.
Assess the cloudiness of urine: Cloudy urine can indicate the presence of substances like bacteria, blood, or crystals, which is not typical for normal urine.
Examine the pH level: Normal urine pH ranges from 4.5 to 8, with a pH less than 4.5 being unusually acidic and not typical for normal urine.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Urine Characteristics

Normal urine typically has specific characteristics, including translucency and a yellowish pigment. These properties are indicative of healthy kidney function and proper hydration. Translucent urine suggests clarity, while the yellow color is primarily due to the pigment urochrome, a byproduct of hemoglobin breakdown.
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Urine pH

The pH of normal urine usually ranges from 4.5 to 8, with an average around 6. A pH less than 4.5 indicates acidity, which can be a sign of metabolic or respiratory acidosis, dehydration, or a high-protein diet. Understanding urine pH is essential for assessing metabolic health and kidney function.
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Cloudiness in Urine

Cloudy urine can indicate the presence of substances such as bacteria, crystals, or mucus, which may suggest an underlying health issue like a urinary tract infection or kidney stones. Normal urine should be clear; thus, cloudiness is often a red flag that warrants further investigation.
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Related Practice
Textbook Question

Dilute urine is produced when decreased levels of______ are secreted:


a. aldosterone

b. atrial natriuretic peptide

c. ADH

d. none of the above

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Textbook Question

Which of the following conditions does not contribute to the creation and/or maintenance of the medullary osmotic gradient?


a. The countercurrent exchanger of the vasa recta

b. The countercurrent multiplier of the nephron loops of cortical nephrons

c. The countercurrent multiplier of the nephron loops of juxtamedullary nephrons

d. The permeability of the medullary collecting system to urea and other ions

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Textbook Question

Fill in the blanks: The kidneys produce  _____ urine when the osmolarity of the body's fluids increases. They produce _____urine when the osmolarity of the body's fluids decreases.

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Textbook Question

The GFR may be estimated by measuring the rate at which certain substances are removed from the blood, which is known as:


a. renal clearance.

b. plasma creatinine.

c. glomerular hydrostatic pressure.

d. inulin estimation.

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Textbook Question

Fill in the blanks for each of the following statements:


a. The process by which urine is eliminated is called _____ , and it is mediated by reflexes involving the_____​nervous system.

b. The mucosa of the organs of the urinary tract is lined with _____epithelium.

c. The three layers of smooth muscle in the urinary bladder are known as the_____muscle.

d. The female urethra provides a passageway for , whereas the male urethra provides a passageway for_____and_____ .

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Textbook Question

Which of the following is not a physiological process carried out by the kidneys?


a. Blood pressure regulation

b. Tubular reabsorption

c. Tubular secretion

d. Glomerular filtration

e. All of the above are physiological processes carried out by the kidneys.

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