Shivering

Shivering is a bodily function in response to early hypothermia in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered. Muscle groups around the vital organs begin to shake in small movements in an attempt to create warmth by expending energy. Shivering can also be a response to a fever as a person may feel cold, though their core temperature is already elevated.

Located in the dorsomedial portion of the hypothalamus near the wall of the third ventricle is an area called the primary motor center for shivering. This area is normally inhibited by signals from the heat center in the anterior hypothalamic-preoptic area but is excited by cold signals from the skin and spinal cord. Therefore, this center becomes activated when the body temperature falls even a fraction of a degree below a critical temperature level.

Increased muscular activity results in wasted heat - here the heat is utilized for warmth.

Shivering can also appear after surgery. This is known as "post-surgical shivering".

ee also

*Myoclonus
*Tremor
*Thermogenesis
*Homeostasis

External links

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  • Shivering — (engl., spr. schiwwering, »Zittern«), in England ein krankhafter Zustand beim Pferde, der mit Muskelzittern und Schwäche im Kreuz verbunden ist, eine Erscheinung, die bei verschiedenen schweren Erkrankungen auftritt …   Meyers Großes Konversations-Lexikon

  • Shivering — Klassifikation nach ICD 10 T88.5 Sonstige Komplikationen infolge Anästhesie Hypothermie nach Anästhesie …   Deutsch Wikipedia

  • Shivering — Shiver Shiv er, v. t. [imp. & p. p. {Shivered}; p. pr. & vb. n. {Shivering}.] [OE. schiveren, scheveren; cf. OD. scheveren. See {Shiver} a fragment.] To break into many small pieces, or splinters; to shatter; to dash to pieces by a blow; as, to… …   The Collaborative International Dictionary of English

  • shivering — noun The action of shivering. Generally speaking, the attack does not involve more inconvenience than this; but in some cases there are shiverings and flushings, cough, loss of appetite, and pain in the right side …   Wiktionary

  • shivering — Trembling from cold or fear. * * * shivering n 1) an act or action of one that shivers 2) a constant abnormal twitching of various muscles in the horse that is prob. due to sensory nerve derangement * * * shiv·er·ing (shivґər ing)… …   Medical dictionary

  • shivering — shiv·er·ing || ʃɪvÉ™rɪŋ n. act of shivering, act of quivering, act of trembling (from cold, fear, etc.) adj. shaking, shuddering, trembling, quaking shiv·er || ʃɪvÉ™(r) n. tremble, vibration, shudder; small fragment, splinter, sliver v.… …   English contemporary dictionary

  • shivering — I noun a sensation of cold that often marks the start of an infection and the development of a fever (Freq. 1) • Syn: ↑chill • Derivationally related forms: ↑shiver • Hypernyms: ↑symptom …   Useful english dictionary

  • Shivering — Shiver Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Shiver, frissonner en anglais, peut faire référence à : Aprilia SL 750 Shiver, une moto italienne, Shiver, une chanson de Coldplay parue en… …   Wikipédia en Français

  • shivering — Synonyms and related words: ache, aching, agitated, ague, aguey, aguish, algid, all shook up, all overish, aspen, blue with cold, bumpiness, chattering, chilblains, chill, chilliness, chilling, chilly, chorea, cold, cold creeps, cold shivers,… …   Moby Thesaurus

  • Shivering Spines — is a pop band from Jönköping, Sweden, who were active from 1988 to 1993The band won the PolyGram competition Rockband of the year 90 , and released a single on this label. The discussions with PolyGram seemed endless, so finally the band decided… …   Wikipedia

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