How many legs does the squid have?

Squid, also known as cuttlefish, cuttlefish, cephalopod squid mollusks, closely related to octopus and gun squid, will use "inkjet" as a way to escape and wait for an opportunity to leave when they encounter a strong enemy, so there are names such as "squid" and "cuttlefish". There are pigment sacs in the skin, which will change color and size with the change of "mood". Let's take a look at how many legs the squid has.

How many legs does the squid have?

The squid has 10 wrists, including 8 short wrists and two long tentacles. Long tentacles for capture and food, surrounded by a mouth mask, called tentacles, can prey, can shrink into the tentacle sac. The inner side of each wrist has 4 rows of suckers with handles, and the tentacles only have 10 rows of small suckers on the inside of the terminal lingual part, which is called touching the ear of the wrist. The middle sucker of the fifth wrist on the left side of the male degenerates and is specialized into the reproductive wrist or stemmed wrist, which can transport seminal pods into the female and act as a copulator.

How many hearts does a squid have?

The squid has three hearts. Usually there is the main heart in the middle, and there is a gills heart on both sides, which is smaller than the heart in the middle. The squid heart consists of one ventricle and two auricles, located in the ventral central pericardial cavity near the posterior end. The ventricle is rhomboid, asymmetric, the wall is thick, the auricle is long and cystic, and the wall is thin. The ventricle extends forward to an anterior great artery, branching to the head, mantle, digestive canal, etc., and the ventricle extends backward to a posterior large artery to the organs such as the mantle, Zhou, rectum, gonad and so on. The blood flows into the main great vein through the microvascular network, and the main great vein is divided into two renal veins into the kidney, and the renal vein and the mantle vein behind the body enter the Gill heart at the base of the Gill, enter the Gill from the Gill vein, and then enter the left and right atrial appendage through the outlet Gill vein, and return to the ventricle.

Does the squid have bones?

The squid has bones. The endoskeleton of squid consists of inner shell and cartilage. The inner shell is located in the shell sac under the dorsal skin of the body. it is well developed, with a long oval front end and a pointed protuberance at the end. the shell is calcareous, the dorsal side is hard, the ventral side is loose and has many voids, which can not only increase the strength of the body, but also reduce the specific gravity of the body, which is beneficial to swimming and helps to maintain balance. Squid cartilage is well developed and its structure is similar to that of vertebrates, except that the cells have long branches, the main cartilage is cephalic cartilage, which surrounds the central nervous system and balance capsule, has holes, and nerves can protrude, as well as cervical cartilage, wrist cartilage and so on.