INTESTINAL GLAND Meaning and
Definition
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Intestinal gland refers to a specialized type of glandular tissue found in the intestines of various organisms, including humans. It primarily functions to produce and secrete various substances that aid in the digestive process and absorption of nutrients.
These glands are mainly composed of epithelial cells and are distributed along the entire length of the intestines. In the small intestine, they are referred to as intestinal glands or crypts of Lieberkühn, while in the large intestine, they are called colonic glands or crypts of Lieberkühn.
The main function of intestinal glands is to secrete digestive enzymes, mucus, and hormones that are essential for the breakdown of food and absorption of nutrients. The digestive enzymes help in the breakdown of complex molecules into simpler forms that can be easily absorbed by the intestinal lining. Mucus, on the other hand, helps in lubricating the intestinal walls and protecting them from damage caused by stomach acid and other potentially harmful substances.
Additionally, intestinal glands also play a crucial role in hormone secretion. They produce hormones such as cholecystokinin (CCK), secretin, and gastrin, which regulate various digestive processes such as the release of bile from the gallbladder, the production of pancreatic enzymes, and the coordination of stomach acid secretion.
Overall, intestinal glands are an essential component of the digestive system, actively contributing to the breakdown and absorption of nutrients, as well as the regulation of various digestive functions.
Etymology of INTESTINAL GLAND
The word "intestinal" is derived from the Latin word "intestinum", which means "the intestines" or "guts". It is further derived from the Latin word "intestinus", which means "internal" or "inward".
The word "gland" is derived from the Latin word "glandula" which means "gland" or "glandular body". The Latin word "glandula" is believed to be derived from the Latin verb "glans", meaning "acorn" or "seed". This is possibly due to the resemblance of certain glands to the shape of acorns.
When combined, the phrase "intestinal gland" refers to a gland or glandular structure located within or associated with the intestines.
