The following is a list of the "G" codes for MeSH

Mesh

Mesh consists of semi-permeable barrier made of connected strands of metal, fiber, or other flexible/ductile material. Mesh is similar to web or net in that it has many attached or woven strands.-Types of mesh:...

. It is a product of the United States National Library of Medicine

United States National Library of Medicine

The United States National Library of Medicine , operated by the United States federal government, is the world's largest medical library. Located in Bethesda, Maryland, the NLM is a division of the National Institutes of Health...

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Source for content is here. (File "2006 MeSH Trees".)

--- digestive, oral, and skin physiology

--- digestive physiology

--- appetite

Appetite

The appetite is the desire to eat food, felt as hunger. Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by a close interplay between the digestive tract, adipose tissue and the brain. Decreased desire to eat is...

 --- appetite regulation --- defecation

Defecation

Defecation is the final act of digestion by which organisms eliminate solid, semisolid or liquid waste material from the digestive tract via the anus. Waves of muscular contraction known as peristalsis in the walls of the colon move fecal matter through the digestive tract towards the rectum...

 --- deglutition --- digestion

Digestion

Digestion is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream, for instance. Digestion is a form of catabolism: a breakdown of large food molecules to smaller ones....

 --- drinking

Drinking

Drinking is the act of consuming water or a beverage through the mouth. Water is required for many of life’s physiological processes. Both excessive and inadequate water intake are associated with health problems.-Physiology:...

 --- eating

Eating

Eating is the ingestion of food to provide for all organisms their nutritional needs, particularly for energy and growth. Animals and other heterotrophs must eat in order to survive: carnivores eat other animals, herbivores eat plants, omnivores consume a mixture of both plant and animal matter,...

 --- gallbladder emptying --- gastrointestinal motility --- gastric emptying --- gastrointestinal transit --- myoelectric complex, migrating --- peristalsis

Peristalsis

Peristalsis is a radially symmetrical contraction and relaxation of muscles which propagates in a wave down the muscular tube, in an anterograde fashion. In humans, peristalsis is found in the contraction of smooth muscles to propel contents through the digestive tract. Earthworms use a similar...

 --- hunger

Hunger (motivational state)

Hunger is a sensation experienced when one is required to eat food. In contrast Satiety is the absence of hunger; it is the sensation of feeling full. Appetite is another sensation experienced with eating, however, it differs from hunger; it is the desire to eat food without a physiological need...

 --- intestinal absorption --- liver regeneration --- mastication

Mastication

Mastication or chewing is the process by which food is crushed and ground by teeth. It is the first step of digestion and it increases the surface area of foods to allow more efficient break down by enzymes. During the mastication process, the food is positioned between the teeth for grinding by...

 --- postprandial period --- salivation

--- dental physiology

--- dental caries susceptibility --- dental enamel solubility --- dental occlusion --- dentin solubility --- tooth calcification --- tooth eruption

Tooth eruption

Tooth eruption is a process in tooth development in which the teeth enter the mouth and become visible. It is currently believed that the periodontal ligaments play an important role in tooth eruption...

 --- tooth exfoliation --- tooth migration --- mesial movement of teeth --- tooth mobility --- tooth permeability --- dental enamel permeability --- dentin permeability --- tooth resorption

Tooth resorption

Tooth resorption is a process by which all or part of a tooth structure is lost due to activation of the bodies innate capacity to remove mineralized tissue, as mediated via cells such as osteoclasts.Types include external resorption and internal resorption....

 --- root resorption

Root resorption

In dentistry, root resorption is the breakdown or destruction, and subsequent loss, of the root structure of a tooth. This is caused by living body cells attacking part of the tooth. When the damage extends to the whole tooth, it is called tooth resorption...

--- skin physiology

Skin physiology

Skin physiology is the subdivision of physiology which concerns the function of the skin and skin appendages.Examples of processes included in skin physiology are galvanic skin response and perspiration....

--- galvanic skin response

Galvanic skin response

Skin conductance, also known as galvanic skin response , electrodermal response , psychogalvanic reflex , skin conductance response or skin conductance level , is a method of measuring the electrical conductance of the skin, which varies with its moisture level...

 --- hair color

Hair color

Hair color is the pigmentation of hair follicles due to two types of melanin: eumelanin and pheomelanin. Generally, if more melanin is present, the color of the hair is darker; if less melanin is present, the hair is lighter...

 --- piloerection --- skin absorption --- skin aging --- skin pigmentation --- skin temperature --- sweating

Sweating

Perspiration is the production of a fluid consisting primarily of water as well as various dissolved solids , that is excreted by the sweat glands in the skin of mammals...