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In veterinary medicine a bolus is a large time-release tablet that stays in the rumen of cattle, goats, and sheep. It can also refer to a dose of liquid injected subcutaneously with a hypodermic needle, such as saline solution administered either to counteract dehydration or especially to mitigate kidney failure, a common ailment in domestic cats.
This bolus from an albatross has several ingested flotsam items, including monofilament from fishing nets and a discarded toothbrush. Tern Island, French Frigate Shoals. In digestion, a bolus (from Latin bolus, "ball") is a ball-like mixture of food and saliva that forms in the mouth during the process of chewing (which is largely an adaptation for plant-eating mammals). [1]
The bolus is ready for swallowing when it is held together by saliva (largely mucus), sensed by the lingual nerve of the tongue (VII—chorda tympani and IX—lesser petrosal) (V 3). Any food that is too dry to form a bolus will not be swallowed. 3) Trough formation. A trough is then formed at the back of the tongue by the intrinsic muscles (XII).
In radiation therapy, bolus is a material which has properties equivalent to tissue when irradiated. It is widely used in practice to reduce or alter dosing for targeted radiation therapy. It is widely used in practice to reduce or alter dosing for targeted radiation therapy.
An esophageal food bolus obstruction is a medical emergency caused by the obstruction of the esophagus by an ingested foreign body.. It is usually associated with diseases that may narrow the lumen of the esophagus, such as eosinophilic esophagitis, Schatzki rings, peptic strictures, webs, or cancers of the esophagus; rarely it can be seen in disorders of the movement of the esophagus, such as ...
Chyme results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes. Chyme slowly passes through the pyloric sphincter and into the duodenum, where the extraction of nutrients begins.
Bolus, a type of space tether, in spaceflight; Bolus armenus, an example of a bole (a reddish soft variety of clay used as a pigment) Bolus Herbarium, an herbarium at the University of Cape Town established in 1865 from a donation by Harry Bolus; Bolus hook, an instrument in a Jacquard loom; Zeeuwse Bolus, a pastry from the Netherlands
Type II formation is a continuous process which is carried out regardless of the presence or absence of a food bolus. Thus, the peritrophic matrix is secreted as an unbroken, concentric, “sleeve like” structure. Although the peritrophic matrix is secreted continually, the presence of a food bolus significantly increases the rate of production.