Search results
Results From The WOW.Com Content Network
Human tears. Tears are a clear liquid secreted by the lacrimal glands (tear gland) found in the eyes of all land mammals. [ 1] Tears are made up of water, electrolytes, proteins, lipids, and mucins that form layers on the surface of eyes. [ 2] The different types of tears—basal, reflex, and emotional—vary significantly in composition.
The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage. [ 1] The lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the eye; it is a j-shaped serous gland located in lacrimal fossa. The lacrimal canaliculi, the lacrimal sac ...
Crying. A young child crying. Crying is the dropping of tears (or welling of tears in the eyes) in response to an emotional state or pain. Emotions that can lead to crying include sadness, anger, excitement, and even happiness. The act of crying has been defined as "a complex secretomotor phenomenon characterized by the shedding of tears from ...
Tear gas, also known as a lachrymatory agent or lachrymator (from Latin lacrima ' tear '), sometimes colloquially known as " mace " after the early commercial self-defense spray, is a chemical weapon that stimulates the nerves of the lacrimal gland in the eye to produce tears. In addition, it can cause severe eye and respiratory pain, skin ...
CS gas. The compound 2-chlorobenzalmalononitrile (also called o-chlorobenzylidene malononitrile; chemical formula: C 10 H 5 ClN 2 ), a cyanocarbon, is the defining component of the lachrymatory agent commonly referred to as CS gas, a tear gas which is used as a riot control agent. CS gas.
Synthetic rubber. A synthetic rubber is an artificial elastomer. They are polymers synthesized from petroleum byproducts. About 32 million metric tons of rubbers are produced annually in the United States, and of that amount two thirds are synthetic. Synthetic rubber, just like natural rubber, has many uses in the automotive industry for tires ...
syn-Propanethial S-oxide (or (Z)-propanethial S-oxide ), a member of a class of organosulfur compounds known as thiocarbonyl S -oxides (formerly "sulfines"), [ 2] is a volatile liquid that acts as a lachrymatory agent (triggers tearing and stinging on contact with the eyes). The chemical is released from onions, Allium cepa, as they are sliced.
A chemical structure of a molecule is a spatial arrangement of its atoms and their chemical bonds. Its determination includes a chemist 's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid. Molecular geometry refers to the spatial arrangement of atoms in a molecule ...