What are the digestive systems? their symptoms and care, diagnosis and measures

Are you talking about digestive diseases?

The composition of the digestive system includes the following organs: esophagus, stomach, intestines, liver, gallbladder, pancreas.

The function of the digestive system: ingesting food, digesting food, decomposing it into small molecule substances, and absorbing nutrients from it, processed by the liver, becoming its own substances in the body, for the needs of the body, unabsorbed substances that are leftovers are excreted from the body, the completion of these physiological functions depends on the coordinated movement of the digestive system and the secretion of various substances, and finally complete the absorption.

The digestive system is composed of two major parts of the stomach and intestines, including the mouth, pharynx, esophagus, pancreas, small intestine, and large intestine.

The insect digestive system consists of the foregut, midgut, hindgut, and salivary glands that are involved in digestion.

The foregut has the function of ingesting, grinding and temporarily storing food. Including the throat, esophagus, bursa and forestomach. The throat is only a passage for food in the chewing mouthparts, but in the stinging and sucking mouthparts insects, the powerful dilator attached to the throat is specialized into a throat pump, which, when sucking, alternately expands and contracts with the esophagus pump to draw blood into the esophagus; The esophagus is merely a passage for food; The sac is a place for temporary storage of food; In addition to the function of grinding food, the forestomach can also be used as a valve to regulate the passage of food into the midgut and also has a filtering effect.

The midgut, also known as the "stomach", is the main part of the secretion of various digestive enzymes, digestion of food and absorption of nutrients. The main function of the midgut gastric blind sac is to increase the surface area of the midgut, which is conducive to the secretion of digestive enzymes and the absorption of nutrients, in addition to the co-biological effects of volume expansion and retention. The periesophageal membrane has the effect of protecting midgut cells from food and microbial damage, and has a significant selective penetration function.

In addition to eliminating food debris and metabolic waste, the hindgut also has the functions of absorbing water and inorganic salts, regulating blood osmotic pressure and ion balance. The hindgut is divided into ileum, colon, and rectum. Among them, the rectal flap between the ileum and the rectum regulates the entry of the residue into the rectum; The rectum of many insects is often specialized as a rectal pad, whose main function is to suck back water and inorganic salts from the residue.

The main functions of the salivary glands are to lubricate the mouthparts, dissolve food, and secrete digestive enzymes.

1) The digestive tract reflects loss of appetite, nausea, and vomiting, and the responder should do: to have more calories and nutrients, and the adverse reactions of chemical ** make it lose its appetite, and the stomach can not retain food, resulting in the gradual decline of nutritional status, affecting the first effect; Severe nausea and vomiting can cause water and electrolyte imbalances, and in severe cases, metabolic alkalosis, hypokalemia, dehydration, etc.; Nausea and vomiting bring mental and psychological pressure to patients, make patients anxious and fearful, and then difficult to persevere, bringing difficulties to patients.

2) Key points of nursing: Pay attention to the posture of the digestive tract; Encourage people with loss of appetite to eat, instruct them to eat small and frequent meals, and eat their favorite foods at will; Clean up the vomit hole in time to create a good dining environment; Give sedatives, antiemetics, and intravenous fluids if necessary; Accurately record the amount of vomiting to prevent water and electrolyte balance disturbances; Health guidance to prevent nausea and vomiting, such as ****, relaxation techniques, advice on food choices, etc.

The main function of the digestive system is to digest and absorb food. Food is mechanically and chemically digested in the digestive tract into small molecule absorbable components, which then pass through the mucosa of the digestive tract into the blood and lymphatic circulation. Residues that cannot be digested and absorbed are eventually excreted as feces.

The digestive system consists of two parts: the digestive tube and the digestive glands. The digestive tract includes the oral cavity, pharynx, esophageal chain, stomach, small intestine (duodenum, jejunum, ileum), and large intestine (cecum and appendix, ascending colon, transverse colon, descending colon, sigmoid colon, rectum). Clinically, the ligament of Treitz is usually the bright line, the upper digestive tract is called the upper gastrointestinal tract, and the lower part is called the lower gastrointestinal tract The digestive glands include the salivary glands (parotid glands, submandibular glands, sublingual glands), liver, pancreas, and small glands scattered in the walls of the digestive tract.

The following description of the system is correct ()aConsists of a digestive tube.

b.Promotes the digestion of food (correct answer).

c.Absorb nutrients (correct answer).

d.Excrete food debris after digestion and absorption (correct staring with answers) eIts large salivary gland is composed of parotid gland and sublingual gland.