Hukou, pinyin is hǔ kǒu, which is a term in Chinese medicine.
1 jaws = 0.2286m =2.25 palm width =9 inches.
1 escape is also called a _ (zh m:).
When the thumb and forefinger of ordinary people stretch out, the length in the middle is a tiger's mouth. Generally 15 cm or so.
Extended data:
Hand characteristics:
The five fingers can bend inward and swing slightly from side to side. Human beings make different gestures by bending their fingers, including making fists with five fingers, V-shaped gestures with index finger and middle finger raised, indecent gestures with middle finger raised, and so on.
When some fingers stand up, it may be difficult for the left and right fingers to bend by themselves. For example, when other fingers are bent, the ring finger cannot be completely vertical, or when other fingers are vertical, the little finger may not be completely bent, but these situations can be achieved through continuous practice, relaxing finger muscles and training finger nerves.
Ordinary people's fingers can only stand straight, but some people's fingers can bend outward more naturally, and with the help of another hand or other objects, they can completely touch the back of their hands without dislocation.
Like other parts of the body, the hand has blood vessels that provide nutrition, nerves that communicate with the brain, and muscles that function through regulation and relaxation under the outermost skin. Below the muscle is the skeleton, which is connected by tendons.
Bones connect with bones to form joints between fingers and wrists. Because of the small size and many joints of the hand, the bones of the hand are generally smaller than those of other parts of the body (except the phalanges).
The hand carries out the instructions of the brain to make actions, and can feel the ambient temperature and the texture of foreign bodies through the skin, and then report to the brain through the neural network. Adult men may have hair on the back of their hands, including the skin on the back of their palms and fingers.
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