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Related Concept Videos

Filtration and Urine Formation01:32

Filtration and Urine Formation

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The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys.
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Common Ion Effect03:24

Common Ion Effect

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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
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Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

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A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
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Physiology of Urine Formation01:24

Physiology of Urine Formation

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Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...
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Formation of Concentrated Urine01:23

Formation of Concentrated Urine

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There is a gradient of solutes in the interstitial fluid from the renal cortex through the medulla, known as the medullary osmotic gradient. The juxtamedullary nephrons establish and maintain this gradient using countercurrent mechanisms with loops extending deep into the medulla. These nephrons also use countercurrent mechanisms to regulate urine volume and concentration. The interaction between the descending and ascending limbs of the nephron loop creates an osmotic gradient through...
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Urine Studies I: Urinalysis01:29

Urine Studies I: Urinalysis

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Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
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Minimum Volume Vitrification of Immature Feline Oocytes
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Common feline problem behaviors: Urine spraying

Debra F Horwitz1

  • 1Veterinary Behavior Consultations, St Louis, MO 63141, USA.

Journal of Feline Medicine and Surgery
|February 28, 2019
PubMed
Summary

Urine spraying in cats, a common household issue, can disrupt the human-cat bond. Understanding its causes and treatments is crucial for feline behavior management.

Area of Science:

  • Veterinary Behavior
  • Feline Ethology

Background:

  • Urine spraying (marking) is a common feline behavior, often occurring indoors due to increased indoor lifestyles.
  • It's a frequent complaint from owners, potentially disrupting the human-cat bond and leading to cat relinquishment.

Purpose of the Study:

  • To review normal urine spraying behavior in cats.
  • To explore owner-reported frequencies and triggers of spraying.
  • To summarize treatment options for feline urine marking.

Main Methods:

  • Literature review of studies on feline urine spraying.
  • Analysis of owner-reported data on spraying frequency and context.
  • Evaluation of treatment efficacy for behavior modification, pheromones, and medication.
Keywords:
Urine sprayingintercat aggressionnormal behaviorvertical deposition

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Main Results:

  • Urine spraying, while normal, is problematic indoors and can occur on various surfaces.
  • Both intact and neutered cats exhibit spraying, influenced by factors including medical issues.
  • Intercat aggression and specific treatments are key considerations.

Conclusions:

  • Accurate diagnosis of urine spraying triggers is essential for successful treatment.
  • A multi-faceted approach including environmental management and medical/behavioral interventions is often necessary.
  • Addressing urine spraying can improve feline welfare and owner satisfaction.