Question

Пищевая система у насекомых СРОЧНО!!!​

Answer 1

Ответ:

Картинки по запросу пищевая система у насекомых

Пищеварительная система насекомых – это совокупность органов, отвечающих за переваривание пищи; она включает в себя кишечный канал и впадающие в него на разных уровнях железы

Схема строения насекомого:

1—граница передней и средней кишок, 2—граница средней и задней кишок, 3 — верхняя челюсть, 4— подглоточник, 5 — нижняя губа, 6 — глотка, 7 — пищевод, 8 — средняя кишка, 9—мальпигиева трубочка, 10 — тонкая кишка, 11 — прямая кишка, 12—аорта, 13—сердце, 14—слюнная железа, 15 — надглоточный узел, 16—подглоточный узел, 17 — брюшная цепочка, 18 — симпатическая нервная система, 19 — яичник, 20 — непарный яйцевод, 21 — г руд-ной отдел брюшной нервной цепочки

Объяснение:

Answer 2

The Digestive System of Insects

The digestive system of insects is a complex and specialized system that allows them to obtain nutrients from their food. It consists of several organs and structures that work together to break down and absorb nutrients.

1. Mouthparts: Insects have different types of mouthparts depending on their feeding habits. These can include chewing mouthparts, such as mandibles and maxillae, for biting and grinding solid food, or sucking mouthparts, such as proboscis or rostrum, for feeding on liquids or plant sap.

2. Foregut: The foregut is the first part of the digestive system and is responsible for the initial processing of food. It includes the mouth, esophagus, crop, and proventriculus. The crop acts as a storage organ for food, while the proventriculus functions as a valve that regulates the passage of food into the midgut.

3. Midgut: The midgut is the main site of digestion and absorption in insects. It is lined with specialized cells that produce enzymes to break down food into smaller molecules. These enzymes include proteases for protein digestion, carbohydrases for carbohydrate digestion, and lipases for lipid digestion. The midgut also absorbs the digested nutrients into the insect's body.

4. Hindgut: The hindgut is the final part of the digestive system and is responsible for the absorption of water and the elimination of waste. It includes the ileum, colon, and rectum. The hindgut reabsorbs water from the undigested food, forming fecal pellets, and eliminates them through the anus.

5. Malpighian Tubules: Insects have specialized excretory organs called Malpighian tubules, which are connected to the junction of the midgut and hindgut. These tubules remove metabolic waste products, such as uric acid, from the insect's body and help maintain the water balance.

It's important to note that the structure and function of the digestive system can vary among different insect species, depending on their feeding habits and ecological niche.