CATDOLL : CATDOLL: The structure of sea cucumber

1. The structure of sea cucumber

The structure of sea cucumber is very simple, consisting of sea cucumber intestines, sea cucumber meat, and sea cucumber teeth. Except for the teeth, all of them can be eaten. When sea cucumbers are processed, the intestines are usually cleaned, leaving only the meat.

2. What is the structure of the sea cucumber’s body?

Sea cucumbers are echinoderms that live in the mud and sand at the bottom of the deep sea and shallow sea. Their slender, fleshy bodies are covered with thorns, which look like cucumbers. People call them "sea cucumbers". There is a small hole in the center of the front of the sea cucumber's body, which is its mouth. It sucks seawater from its mouth and sprays it out from its anus. Around the mouth of the sea cucumber, there is a circle of cylindrical tentacles like jasmine flowers, which are its feeding tools. There are also many tube feet on the ventral surface of its body, and it can crawl on the hard bottom of the sea with these tube feet.

There are about 900 species of sea cucumbers, distributed in the world's oceans. my country has a large number of sea cucumbers, of which more than 20 are edible. Sea cucumbers such as sea cucumbers and sea cucumbers are famous seafood treasures both at home and abroad.

Many people think that sea cucumbers are soft and boneless, but this is not true. Sea cucumbers do have bones, but most of their bones are degenerate and buried in the body wall. They are also very small and can only be seen clearly under a microscope when magnified dozens of times. According to statistics, some sea cucumbers have nearly 20 million small bones in their bodies. What an amazing number! Among these bones, the most obvious is the lime ring, which surrounds the throat of the sea cucumber like a necklace. Some sea cucumbers also have a thin anal plate near the cloaca.

From the small bone pieces of sea cucumbers, we can learn about their development history. As early as more than 600 million years ago, sea cucumbers appeared on the earth. They lived in places such as fine sand seabed, rocky reef bottom or coral sand bottom. According to investigations and studies, there are many types of deep-sea sea cucumbers. At a depth of 4,000 meters, they account for 50% of the total biomass there, and at a depth of 800 meters, it is as high as 90%. It can be seen that deep-sea sea cucumbers have a strong ability to adapt to the deep-sea environment.

Sea cucumbers are not active and move slowly. In the competition for survival, they have developed a special skill: once they encounter an enemy, they can spit out their internal organs from their mouths and "give" them to the enemy, and then they can slip away. Don't worry, they won't die. This animal has a strong regenerative ability and can grow new internal organs in a short time.

3. Who knows the structure of the sea cucumber’s digestive tract?

The digestive tract has significantly degenerated, and the small intestine tissue structure only has the outer epidermis, muscle, and inner epidermis.

4. What is the structure of ginseng?

参cān

Radical Strokes

Radical:厶 Strokes outside radical:6 Total strokes:8

Upper, middle and lower structure

5. The name of each part of sea cucumber

The following is a detailed diagram of sea cucumbers. If it helps, please adopt it. Lao Yin’s answer