What part of the chicken s stomach is that? Do chickens have stomachs?

The small stomach of the chicken is the place where the chicken is first digested, and the stomach of the chicken is divided into two parts: the glandular stomach anterior stomach and the muscular stomach hinderior stomach. Food is sent here from the forestomach, which is rich in digestive glands, where it is ground with sand and pebbles that have been swallowed before being sent to the duodenum.

The stomach of poultry is divided into muscular stomach and glandular stomach, the glandular stomach is smaller and secretes gastric juice, the muscular stomach is larger and the meat is thicker and responsible for storing and grinding food, and the gizzard refers to the muscular stomach.

The stomach of a chicken is called a gizzard, also called a gizzard.

Chicken county liver. The stomach of poultry is divided into muscular stomach and glandular stomach, the glandular stomach is smaller and secretes gastric juice, and the muscular stomach is larger and the meat is thicker and responsible for storing and grinding food, so it can be said that gizzard refers to the stomach of chickens.

Discharge cooling is another type of convection cooling. Unlike regenerative cooling, the coolant used for exhaust cooling absorbs heat to the thrust chamber and is discharged out of the combustion chamber instead of entering the combustion chamber to participate in combustion. Direct drain coolant reduces the thrust chamber specific impulse, so the coolant flow for drain cooling needs to be minimized while only using drain cooling at the outlet section of the nozzle that is relatively less heated.

There is also radiative cooling, in which the heat flow is transferred from the combustion products to the thrust chamber, and then the heat is radiated by the thrust chamber wall to the surrounding space. Radiative cooling is characterized by simplicity and small structural mass. It is mainly used in the extension section of large nozzles and the thrust chamber of small thrust engines using high-temperature resistant materials.

When cooling in the thrust chamber of the tissue, a relatively low temperature liquid or gas protective layer is established on the surface of the thrust chamber wall to reduce the heat flow to the thrust chamber wall, reduce the wall temperature, and achieve cooling. Internal cooling is mainly divided into three methods: internal cooling (shield cooling), membrane cooling and diaphoretic cooling of head tissues. After the internal cooling measures are adopted in the thrust chamber, the mixing ratio near the wall of the combustion chamber is different from the optimal mixing ratio in the central area (in most cases, the near-wall layer rich in fuel is used) due to the need to reduce the temperature of the protective layer, resulting in the uneven distribution of the mixing ratio along the cross-section of the combustion chamber, so that the combustion efficiency is reduced to a certain extent.

Membrane cooling is similar to shield cooling in that it cools the thrust chamber wall by establishing a uniform and stable coolant film or air film protective layer near the inner wall surface, except that the coolant used to establish the protective layer is not injected by the injector, but is supplied through a special cooling belt. The cooling band is generally arranged in a cross-section of the combustion chamber or the convergence section of the nozzle. There can be several cooling bands along the length of the combustion chamber.

In order to improve the stability of the membrane, the coolant often flows through the gaps or small holes in the cooling belts, and when sweating is used, the thrust chamber wall or part of the inner wall is made of porous material with a pore diameter of tens of microns. Porous materials are usually sintered with metal powders or pressed with metal mesh. In this case, the number of pores per unit area is increased by making the micropores in the material as evenly distributed as possible.

The liquid coolant penetrates into the inner wall, creating a protective film that reduces the density of the heat transferred to the wall. When the flow rate of liquid coolant used for sweat cooling is above a certain threshold, a liquid film is formed near the wall of the thrust chamber. When the coolant flow rate is below the critical flow, the inner wall temperature will be higher than the coolant boiling point at the current pressure, and some or all of the coolant will evaporate, forming an air film.

In addition to the above thermal protection, there are other thermal protection methods such as: ablation cooling, thermal insulation cooling, hot melt cooling and composite protection of chamber walls. 3. Thermal protection scheme of high enthalpy gas generator Based on the above methods and the actual situation, the thermal protection method of high enthalpy gas generator is obtained.

The combustion chamber of a high-enthalpy gas generator differs from that of a liquid rocket engine, eliminating the front thrust chamber part, making its structure simpler and more effective. Then, the thermal protection involved is the thermal protection part of the combustion chamber wall. As the fuel enters the combustion chamber, it quickly decomposes and releases large quantities.

Chickens have two stomachs.

One is the stomach connected to the esophagus, which is commonly known as the common name of the common people: chicken. The food that the chickens eat is here.

One is the gizzard that is connected to this stomach, which has some hard particles such as small pebbles, because chickens have no teeth and rely on these to further grind food. The gizzard is connected to the intestines.

The chicken has two stomachs, the anterior stomach and the gizzard;

The glandular stomach, also known as the forestomach, pulls the left lobe of the liver from the left side, and there is an opening connecting the glandular stomach and duodenum on the dorsal side of the left lobe. Short spindle-shaped, posteriorly connected to the muscular stomach by an isthmus. The stomach wall is thicker, but the lumen is not large.

The mucosa is covered with a single layer of columnar epithelium, which is clearly demarcated from the esophageal mucosa. Many crypts are formed in the superficial layers of the mucosa, like a single tubular gland, called the superficial anterior gastric gland, which secretes mucus;

The gizzard is also known as the "muscular stomach". It is connected to the front stomach and laughs back to accompany the small intestine. The gizzard often has a thick muscular wall and a small stomach cavity.

Birds that eat cereals, hard fruits, and omnivorous foods generally have a skin on the inside of the gizzard, which stores swallowed sand and gravel to replace the teeth to grind food, so as to reduce the workload of the glandular stomach and aid digestion. Lucky stupid.