Principal cell

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Principal cell

Principal cells (== Template:IPA ==

The Template:IPA (International Phonetic Alphabet) is a system of phonetic notation based primarily on the Latin alphabet. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of the sounds of spoken language.

Pronunciation

The pronunciation of the term "IPA" is /aɪ piː eɪ/ in English.

Etymology

The term "IPA" is an acronym for the International Phonetic Alphabet. The International Phonetic Association, founded in 1886, created the IPA to provide a single, universal system for the transcription of spoken language.

Related Terms

  • Phonetic notation: A system used to visually represent the sounds of speech. The IPA is one type of phonetic notation.
  • Phonetics: The study of the physical sounds of human speech. It is concerned with the physical properties of speech sounds (phonemes), and the processes of their physiological production, auditory reception, and neurophysiological perception.
  • Phonology: The study of the way sounds function within a particular language or languages. While phonetics concerns the physical production, acoustic transmission and perception of the sounds of speech, phonology describes the way sounds function within a particular language or languages.
  • Transcription (linguistics): The systematic representation of spoken language in written form. The source of the words transcribe and transcription, the term means "to write across" in Latin, and it's the process of converting spoken language into written form. In linguistics, this is often done using the IPA.

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Languages: - East Asian 中文, 日本, 한국어, South Asian हिन्दी, Urdu, বাংলা, తెలుగు, தமிழ், ಕನ್ನಡ,
Southeast Asian Indonesian, Vietnamese, Thai, မြန်မာဘာသာ, European español, Deutsch, français, русский, português do Brasil, Italian, polski), also known as principal epithelial cells or P cells, are a type of cell found in the renal tubule of the kidney and the collecting duct system. They play a crucial role in the body's ability to balance water and electrolyte levels.

Etymology

The term "principal cell" is derived from the Latin word "princeps", meaning "first" or "leading". This reflects the cell's primary role in the body's water and electrolyte balance.

Function

Principal cells are responsible for the final adjustments of the urine composition. They reabsorb sodium and water from the urine, while secreting potassium into it. This process is regulated by aldosterone, a hormone produced by the adrenal gland.

Related Terms

  • Renal tubule: The part of the nephron where the filtrate from the glomerulus enters. It is divided into several sections, each with different cells and functions.
  • Collecting duct system: A series of tubules and ducts that connect the nephrons to the ureter.
  • Aldosterone: A hormone that regulates sodium and potassium balance by acting on the principal cells in the kidney.
  • Adrenal gland: A small gland located above each kidney. It produces hormones like aldosterone that help control blood sugar, burn protein and fat, react to stressors like a major illness or injury, and regulate blood pressure.

External links

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