Question: Where does the "seven inches" of hitting a snake refer to the snake?

Popular science: Snakes are a class of animals under the phylum Chordata and reptiles. Slender body, divided into three parts: head, trunk and tail, no limbs or claw-like hind limb remains on both sides of the transverse fissure of the lower snake; scales all over the body; different head shapes, nostrils located on the snout side, but the lifelong sea snake species live on the back of the snout; protective transparent skin outside the eyeball, the pupil is round, vertical oval or horizontal oval, no active eyelid, the crystals are almost spherical; the tongue is slender and bifurcated; the foremand (only pythons have teeth), the maxilla, palate, wing bones, and tooth bones are attached to the teeth with the posterior curved teeth of the tooth tip, However , the size , number , and structure of the teeth vary from species to snake ; the tail is significantly shorter than the head.
Answer: Seven inches refers to the location of the snake's heart. However, due to the different factors such as the type, size and length of the snake, the location of the snake's heart is also different. The saying that a snake strikes seven inches is often used as a metaphor for the key parts of things, the key points. The so-called hitting the snake seven inches is to hit the key position of the snake, then the snake will undoubtedly die.
Extended knowledge: There is also a saying called hitting the snake three inches, the snake's three inches refers to the location of the snake's vertebrae, the vertebrae are the most fragile and easiest to break the place, if the snake's vertebrae are broken, then the snake's nerve center and other parts will be destroyed.
Seven inches
Summary: Seven inches " is not a unit of length described here, it is the heart part of a snake.
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