Nitric oxide

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Nitric Oxide

Nitric oxide (pronounced: /ˈnaɪtrɪk ˈɒksaɪd/), also known as NO, is a chemical compound consisting of one nitrogen atom and one oxygen atom. It is a colorless and odorless gas that plays a significant role in several biological processes.

Etymology

The term "Nitric oxide" is derived from the Latin words 'nitrum', meaning 'native soda', and 'oxide', which refers to a compound that contains one or more oxygen atoms.

Role in the Body

Nitric oxide is a crucial molecule in the body that helps with various functions. It is a vasodilator, meaning it helps to relax and widen the blood vessels, improving blood flow and reducing blood pressure. It also plays a role in neurotransmission, the process by which nerve signals are sent throughout the body.

Related Terms

  • Nitrogen: A chemical element with the symbol N and atomic number 7. It is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.
  • Oxygen: A chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.
  • Vasodilation: The widening of blood vessels resulting from relaxation of smooth muscle cells within the vessel walls.
  • Neurotransmission: The process by which signaling molecules called neurotransmitters are released by a neuron, and bind to and activate the receptors of another neuron.

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