Shivering (also called shuddering ) is a bodily function in response to cold and extreme fear in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis . Skeletal muscles begin to shake in small movements, creating warmth by expending energy . Shivering can also be a response to fever , as a person may feel cold. During fever, the hypothalamic set point for temperature is raised. The increased set point causes the body temperature to rise ( pyrexia ), but also makes the patient feel cold until the new set point is reached. Severe chills with violent shivering are called rigors. Rigors occur because the patient's body is shivering in a physiological attempt to increase body temperature to the new set point.
16-575: (Redirected from SIVA ) [REDACTED] Look up siva or Siva in Wiktionary, the free dictionary. Siva may refer to: Film and television [ edit ] Siva (director) , Indian cinematographer and director Siva (1989 Tamil film) , a film starring Rajinikanth as the title character Siva (1989 Telugu film) , an action film Music and dance [ edit ] Siva (soundtrack) , soundtrack album by Ilaiyaraaja for
32-731: A British automobile manufacturer active in the 1970s Siva Power , a Californian solar power startup founded in 2006 Science [ edit ] Siva (protein) , a pro-apoptotic signaling protein Siva (rebreather) , an oxygen rebreather Siva , the monotypic bird genus of the blue-winged minla People with the name [ edit ] Peyton Siva (born 1990), American basketball player Siva Chinnatamby (c.1921/3 – 2000), Sri Lankan obstetrician Siva Kaneswaran, member of boy band The Wanted Ambalavaner Sivanandan , commonly known as Siva (1923–2018), Sri Lankan writer and activist Other uses [ edit ] Siva (river) ,
48-664: A Slavic goddess of fertility SIVA, the main threat in Destiny: Rise of Iron , an expansion pack for the Destiny video game See also [ edit ] All pages with titles containing Siva Ezhava Siva , a caste of Kerala, India Sivan (disambiguation) Shiva (disambiguation) Shiv (disambiguation) Siwa (disambiguation) Siv (disambiguation) Seva (disambiguation) Sieve (disambiguation) Živa (disambiguation) Shivering Yeshiva , Jewish religious schools Topics referred to by
64-549: A Slavic goddess of fertility SIVA, the main threat in Destiny: Rise of Iron , an expansion pack for the Destiny video game See also [ edit ] All pages with titles containing Siva Ezhava Siva , a caste of Kerala, India Sivan (disambiguation) Shiva (disambiguation) Shiv (disambiguation) Siwa (disambiguation) Siv (disambiguation) Seva (disambiguation) Sieve (disambiguation) Živa (disambiguation) Shivering Yeshiva , Jewish religious schools Topics referred to by
80-486: A film starring Rajinikanth as the title character Siva (1989 Telugu film) , an action film Music and dance [ edit ] Siva (soundtrack) , soundtrack album by Ilaiyaraaja for the 1989 Telugu film "Siva" (song) , a song by the Smashing Pumpkins Siva Samoa , a type of Samoan dance often performed at weddings Companies [ edit ] Siva Motor Car Company ,
96-798: A tributary of the Kama in Russia Siva (rural locality) , a list of rural localities in Russia 1170 Siva , an asteroid named after the Hindu god Shanghai Institute of Visual Art , a public university in China Simplified individual voluntary arrangement , a pending UK insolvency process SIVA or the Industrial Development Corporation of Norway Śiva or Shiva , a Hindu god Šiva or Živa (goddess) ,
112-425: A tributary of the Kama in Russia Siva (rural locality) , a list of rural localities in Russia 1170 Siva , an asteroid named after the Hindu god Shanghai Institute of Visual Art , a public university in China Simplified individual voluntary arrangement , a pending UK insolvency process SIVA or the Industrial Development Corporation of Norway Śiva or Shiva , a Hindu god Šiva or Živa (goddess) ,
128-403: Is different from Wikidata All article disambiguation pages All disambiguation pages siva [REDACTED] Look up siva or Siva in Wiktionary, the free dictionary. Siva may refer to: Film and television [ edit ] Siva (director) , Indian cinematographer and director Siva (1989 Tamil film) ,
144-399: Is different from Wikidata All article disambiguation pages All disambiguation pages Shivering Located in the posterior 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
160-692: Is utilized for warmth. Newborn babies, infants, and young children experience a greater (net) heat loss than adults because of greater surface-area-to-volume ratio . As they cannot shiver to maintain body heat, they rely on non-shivering thermogenesis . Children have an increased amount of brown adipose tissue (increased vascular supply, and high mitochondrial density), and, when cold-stressed, will have greater oxygen consumption and will release norepinephrine . Norepinephrine will react with lipases in brown fat to break down fat into triglycerides . Triglycerides are then metabolized to glycerol and non-esterified fatty acids. These are then further degraded in
176-406: 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 the generation of heat as a byproduct. Most often, when the purpose of the muscle activity is to produce motion, the heat is wasted energy. In shivering, the heat is the main intended product and
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#1732787290764192-467: The 1989 Telugu film "Siva" (song) , a song by the Smashing Pumpkins Siva Samoa , a type of Samoan dance often performed at weddings Companies [ edit ] Siva Motor Car Company , a British automobile manufacturer active in the 1970s Siva Power , a Californian solar power startup founded in 2006 Science [ edit ] Siva (protein) , a pro-apoptotic signaling protein Siva (rebreather) , an oxygen rebreather Siva ,
208-420: The monotypic bird genus of the blue-winged minla People with the name [ edit ] Peyton Siva (born 1990), American basketball player Siva Chinnatamby (c.1921/3 – 2000), Sri Lankan obstetrician Siva Kaneswaran, member of boy band The Wanted Ambalavaner Sivanandan , commonly known as Siva (1923–2018), Sri Lankan writer and activist Other uses [ edit ] Siva (river) ,
224-465: The needed heat-generating process to form CO 2 and water. Chemically, in mitochondria , the proton gradient producing the proton electromotive force that is ordinarily used to synthesize ATP is instead bypassed to produce heat directly. Shivering can also appear after surgery. This is known as postanesthetic shivering . In humans, shivering can also be caused by cognition. This is known as psychogenic shivering . The functional capacity of
240-514: The same term [REDACTED] This disambiguation page lists articles associated with the title Siva . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Siva&oldid=1251177069 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Disambiguation pages with given-name-holder lists Hidden categories: Short description
256-514: The same term [REDACTED] This disambiguation page lists articles associated with the title Siva . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Siva&oldid=1251177069 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Disambiguation pages with given-name-holder lists Hidden categories: Short description
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