Question

Объясните, почему желудок уперечисленных организмов не имеет одинакового строения?(корова, дождевой червь, человек ) пожалуйста​

Answer 1

Ответ:

дождевой червь в пищевод впадают З пары известковых желез, служащих для нейтрализации гуминовых кислот, которые содержатся в гниющих Листьях, поедаемых червями.

корова у коровы, как и у других жвачных, четыре желудка: рубец, сетка, книжка и сычуг. Рубец, сетку и книжку называют преджелудками. Задачей преджелудков является накапливать корма, задерживать их для расщепления микробами, переваривать корм и всасывать продукты распада в организм.

Человек умеренно наполненный желудок имеет длину 24-26 cm, максимальное расстояние между кривизнами увеличивается до 10-12 см, между передней и задней стенками - 8-9 см. Объём желудка у взрослого человека может варьироваться в зависимости от количества принятой пищи и жидкости. Объём пустого желудка равняется около 0,5 л.

Пошаговое объяснение:

вы можете укоротить содержание, если нужно

Answer 2

Why do the stomachs of cows, earthworms, and humans have different structures?

The stomach is an organ responsible for the digestion of food. While the stomachs of cows, earthworms, and humans all serve the purpose of breaking down food, they have different structures due to their unique dietary needs and digestive processes.

Cows are herbivores and have a specialized stomach structure that allows them to efficiently digest plant material. They have a four-chambered stomach, consisting of the rumen, reticulum, omasum, and abomasum. The rumen and reticulum are responsible for the initial breakdown of plant material through fermentation and microbial digestion. The omasum helps with water absorption, and the abomasum functions similarly to the stomach of other animals, secreting digestive enzymes to further break down food.

Earthworms are detritivores and feed on decaying organic matter in the soil. Their digestive system is simpler compared to cows and humans. Earthworms have a muscular organ called the gizzard, which helps grind the ingested soil and organic matter. The food then passes through the intestine, where nutrients are absorbed. Earthworms also have a structure called the crop, which temporarily stores food before it moves into the gizzard.

Humans are omnivores and have a stomach structure that allows for the digestion of a variety of foods. The human stomach has a J-shaped structure and consists of four main regions: the cardia, fundus, body, and pylorus. The stomach lining produces gastric juices, including hydrochloric acid and enzymes, which help break down proteins and other nutrients. The partially digested food, known as chyme, then moves into the small intestine for further digestion and absorption of nutrients.

In summary, the different structures of the stomachs in cows, earthworms, and humans are adaptations to their specific dietary needs and digestive processes. Cows have a specialized four-chambered stomach for efficient digestion of plant material, earthworms have a simpler structure for processing decaying organic matter, and humans have a stomach structure that allows for the digestion of a variety of foods.

I hope this explanation helps! Let me know if you have any further questions.