{"id":92128,"date":"2025-06-01T11:15:26","date_gmt":"2025-06-01T11:15:26","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=92128"},"modified":"2025-06-01T11:15:26","modified_gmt":"2025-06-01T11:15:26","slug":"which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/","title":{"rendered":"Which one of the following is synthesised in human body that dilates b"},"content":{"rendered":"

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow ?<\/p>\n

[amp_mcq option1=”Nitric oxide” option2=”Nitrous oxide” option3=”Nitrogen dioxide” option4=”Nitrogen pentoxide” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC IAS – 2024<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow.
\nNitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body.
\nNitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation.
\nNitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation.
\nTherefore, Nitric oxide is the correct answer.
\n<\/section>\n
Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. This mechanism is important for regulating blood pressure and tissue perfusion.
\n<\/section>\n
NO plays various other roles in the body, including neurotransmission, immune response, and muscle function. The discovery of NO’s role as a signaling molecule in the cardiovascular system was awarded the Nobel Prize in Physiology or Medicine in 1998. Medications like nitroglycerin, used to treat angina (chest pain), work by releasing NO, which dilates coronary arteries. Sildenafil (Viagra) also works by enhancing the effects of NO on blood vessels.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow ? [amp_mcq option1=”Nitric oxide” option2=”Nitrous oxide” option3=”Nitrogen dioxide” option4=”Nitrogen pentoxide” correct=”option1″] This question was previously asked in UPSC IAS – 2024 Download PDFAttempt Online The question asks for a substance synthesized in the human body that dilates … <\/p>\n

Detailed SolutionWhich one of the following is synthesised in human body that dilates b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1092],"tags":[1103,1117,1126],"class_list":["post-92128","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1103","tag-biology","tag-circulatory-system","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is synthesised in human body that dilates b<\/title>\n<meta name=\"description\" content=\"The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow. Nitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body. Nitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation. Nitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation. Therefore, Nitric oxide is the correct answer. Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. This mechanism is important for regulating blood pressure and tissue perfusion.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following is synthesised in human body that dilates b\" \/>\n<meta property=\"og:description\" content=\"The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow. Nitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body. Nitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation. Nitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation. Therefore, Nitric oxide is the correct answer. Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. This mechanism is important for regulating blood pressure and tissue perfusion.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:15:26+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which one of the following is synthesised in human body that dilates b","description":"The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow. Nitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body. Nitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation. Nitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation. Therefore, Nitric oxide is the correct answer. Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. This mechanism is important for regulating blood pressure and tissue perfusion.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following is synthesised in human body that dilates b","og_description":"The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow. Nitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body. Nitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation. Nitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation. Therefore, Nitric oxide is the correct answer. Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. This mechanism is important for regulating blood pressure and tissue perfusion.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:15:26+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-synthesised-in-human-body-that-dilates-b\/","name":"Which one of the following is synthesised in human body that dilates b","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:15:26+00:00","dateModified":"2025-06-01T11:15:26+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The question asks for a substance synthesized in the human body that dilates blood vessels and increases blood flow. Nitric oxide (NO) is a molecule produced by cells in the endothelium (lining of blood vessels) and other tissues. It is a potent vasodilator, meaning it causes the smooth muscles in the walls of blood vessels to relax, leading to increased diameter and blood flow. This process is crucial for regulating blood pressure and blood flow to different parts of the body. Nitrous oxide (N\u2082O), also known as laughing gas, is an anesthetic and analgesic gas used in medicine but is not synthesized in the human body for vasodilation. Nitrogen dioxide (NO\u2082) and Nitrogen pentoxide (N\u2082O\u2085) are oxides of nitrogen that are primarily environmental pollutants and industrial chemicals, not molecules synthesized endogenously in the human body for physiological functions like vasodilation. Therefore, Nitric oxide is the correct answer. Nitric oxide (NO) acts as a signaling molecule in the cardiovascular system, promoting vasodilation by activating guanylate cyclase, which leads to the relaxation of vascular smooth muscle cells. 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