The digestive juices rapidly turn the prey into a broth of nutrients which the arachnid sucks into a pre-buccal cavity located immediately in front of the mouth.

Saliva cleans the oral cavity, moistens the food, and contains digestive enzymes such as salivary amylase, which aids in the chemical breakdown of polysaccharides such as starch into disaccharides such as maltose.

Additional organs of excretion, at least in some species, include pericardial glands in the body cavity, and digestive glands opening into the stomach.

The digestive tract is essentially a tube running the length of the body, but has a powerful muscular pharynx immediately behind the mouth cavity.

The digestive system consists of a mouth, pharynx, and a structure called a gastrovascular cavity.

In the human digestive system, the main sites of digestion are the oral cavity, the stomach, and the small intestine.

It also forms the lining cells of all the glands which open into the digestive tube, including those of the liver and pancreas ; the epithelium of the auditory tube and tympanic cavity ; the trachea, bronchi, and air cells of the lungs ; the urinary bladder and part of the urethra ; and the follicle lining of the thyroid gland and thymus.

A characteristic of Nematoda is the one-way digestive tract, with a pseudocoelom ( body cavity made up of only an ectoderm and endoderm ).

It takes place out of the cell, either in a gastric cavity or digestive organ, or completely outside the body.

Autolyzed yeast ( containing the cell walls ) or autolyzed yeast extract consists of concentrations of yeast cells that are allowed to die and break up, so that the yeasts ’ endogenous digestive enzymes break their proteins down into simpler compounds ( amino acids and peptides ).

The digestive system consists of a simple tube running the length of the body, with the anus being at the posterior end.

The alimentary canal consists of a straight tube that often has a gizzard-like " gastric mill " for grinding food and a pair of digestive glands that absorb food ; this structure goes in a spiral format.

An earthworm's digestive system consists of a mouth, pharynx, esophagus, crop, gizzard, and intestine.

The digestive tract of typical bivalves consists of an oesophagus, stomach, and intestine.

It results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes.

They have a single-opening digestive tract, in Tricladida planarians this consists of one anterior branch and two posterior branches.

Malpighian tubules excrete nitrogenous waste into the digestive system, which typically consists of a simple tube.

The remainder of the digestive system consists of a simple tube running from the pharynx to the anus.

Reconstruction consists of attaching the pancreas to the jejunum ( pancreaticojejunostomy ) and attaching the hepatic duct to the jejunum ( hepaticojejunostomy ) to allow digestive juices and bile respectively to flow into the gastrointestinal tract and attaching the stomach to the jejunum ( gastrojejunostomy ) to allow food to pass through.

The remainder of the digestive system consists of an oesophagus, stomach, and intestine.

During the stage of neural plate formation the embryo consists of three cell layers: the ectoderm that eventually forms the skin and neural tissues, the mesoderm that forms muscle and bone, and the endoderm that will form the cells lining the digestive and respiratory tract.

The remainder of the digestive system consists of an oesophagus and intestine ; there is no stomach.

Opened in late 2009, St. Luke's Medical Center consists of a 16-storey hospital building with 600 patient beds and an 11-storey medical arts building with 374 doctor's clinics and ten institutes, one each for heart, cancer, neurosciences, digestive and liver diseases, eye, orthopedics and sports medicine, pathology, pulmonary medicine, radiology, and pediatrics and child health.

They fuse to make a food vacuole which then fuses with a lysosome to add digestive chemicals.

Its function is to control the expulsion of feces, unwanted semi-solid matter produced during digestion, which, depending on the type of animal, may be one or more of: matter which the animal cannot digest, such as bones ; food material after all the nutrients have been extracted, for example cellulose or lignin ; ingested matter which would be toxic if it remained in the digestive tract ; and dead or excess gut bacteria and other endosymbionts.

This is because of its fibrous husk, which is important not only in the sparging stage of brewing ( in which water is washed over the mashed barley grains to form the wort ) but also as a rich source of amylase, a digestive enzyme that facilitates conversion of starch into sugars.

Carnivora have a simple stomach designed to digest primarily meat, as compared to the elaborate digestive systems of herbivorous animals, which are necessary to break down tough, complex plant fibers.

The currently available antiparasitic treatments for Chagas disease are benznidazole and nifurtimox, which can cause temporary side effects in many patients including skin disorders, brain toxicity, and digestive system irritation.

Stanley Temple hypothesized that the Dodo, which became extinct in the 17th century, ate tambalacoque fruits, and only by passing through the digestive tract of the Dodo could the seeds germinate.

The Ctenophora and the Cnidaria, which includes sea anemones, corals, and jellyfish, are radially symmetric and have digestive chambers with a single opening, which serves as both the mouth and the anus.

Ground mung beans are used to make a porridge called nokdujuk, which is eaten as a nutritional supplement and digestive aid, especially for ill patients.

These foreign materials do not appear to harm manatees, except for monofilament line or string, which can clog a manatee's digestive system and slowly kill it.

The most familiar would be peristalsis which is where digested food is forced throughout the digestive tract.

Carbohydrates and proteins provide 17 kJ approximately ( 4 kcal ) of energy per gram, while fats provide 37 kJ ( 9 kcal ) per gram., though the net energy from either depends on such factors as absorption and digestive effort, which vary substantially from instance to instance.

Insoluble fiber, found in whole wheat flour, nuts and vegetables, especially stimulates peristalsis – the rhythmic muscular contractions of the intestines which move digesta along the digestive tract.

In protists, vacuoles have the additional function of storing food which has been absorbed by the organism and assisting in the digestive and waste management process for the cell.

The common bean and many others, including the soybean, also contain trypsin inhibitors which interfere with the action of the digestive enzyme trypsin.

To avoid this problem, mosquitoes have a digestive system which can store both food types, and give access to both as they are needed.

Severe deficiency of niacin in the diet causes the disease pellagra, which is characterized by diarrhea, dermatitis, and dementia, as well as “ necklace ” lesions on the lower neck, hyperpigmentation, thickening of the skin, inflammation of the mouth and tongue, digestive disturbances, amnesia, delirium, and eventually death, if left untreated.

Both males and females have a cloaca, which is a chamber through which digestive and urinary wastes pass and through which the reproductive systems also empty.

Ectosymbiosis, also referred to as exosymbiosis, is any symbiotic relationship in which the symbiont lives on the body surface of the host, including the inner surface of the digestive tract or the ducts of exocrine glands.

The stomach is a muscular, hollow, dilated part of the digestion system which functions as an important organ of the digestive tract in some animals, including vertebrates, echinoderms, insects ( mid-gut ), and molluscs.