Where is the danger triangle of human beings?

NO 1: danger zone of facial triangle prone to acne: this triangle is composed of the connecting line between the root of nasal alar and the corners of both sides. There are six veins leading to the skull in the head and face, which branch and communicate with each other to form a dense vascular network. This area is rich in blood vessels and nutrients, and wastes and toxins are removed in time, so facial skin is the most sensitive and active, and systemic problems can easily be reflected here. Danger formation: facial vein is the only vein without venous valve, and venous blood keeps flowing to "waste treatment station" with waste. However, due to the special structure of the facial vein, blood will not only flow down to the jugular vein normally, but also flow up to the skull. Safety warning: If you have acne on your face, don't squeeze it with your hands, otherwise the bacteria and dust on the skin around your hands or acne will easily enter the blood and wander around along the venous network, which is most likely to cause infections of organs such as eyes and nose, and even lead to intracranial infection, which is life-threatening. NO2: Occipital triangle danger zone causing headache: Occipital triangle refers to the area below occipital bone, including the first cervical vertebra and the second cervical vertebra behind the neck. There are the most complicated joints in the human body: occipital joint-the first cervical joint-the second cervical joint. The left-right rotation, nodding and shaking of the head are mainly accomplished by these joints. The normal cervical vertebra protrudes slightly forward, and the nerve artery passes through the middle. This radian can easily increase the elasticity of the cervical spine and slow down the head vibration. Danger formation: If you keep a bad posture for a long time, the lordosis of the neck will gradually become straight or backward, which will oppress the nerves and blood vessels that work normally, which will not only easily lead to migraine, stroke and other diseases, but also lead to cervical angina pectoris. Safety warning: avoid high pillow sleep. The high pillow bends the head forward, which increases the pressure on the cervical spine and easily accelerates the pathological changes of the cervical spine; Keep your neck and shoulders warm, because cold is the easiest way to hurt your bones and muscles. If the neck is blown by cold air for a long time in an air-conditioned environment, it is prone to stiffness and pain; In addition, always correct the posture of head, neck, shoulders and back, and don't shrug your shoulders often; After maintaining the same posture 1 hour, we should pay attention to relaxing the shoulder and neck muscles, and do some flexion, extension and rotation of the head and upper limbs to enhance the ability of the neck and shoulder muscles to cope with sudden changes. NO _ 3: Danger zone of injury of the shoulder triangle: The shoulder triangle is equivalent to the deltoid muscle of the upper arm joint. The muscles in this area are very thick. The deltoid muscle surrounds the shoulder joint from front, outside and back, and the axillary nerve is distributed in it, which dominates the contraction and relaxation of the deltoid muscle. Other joints in the whole body can only do flexion and extension, while the shoulder joint can do five movements because of its special ball and socket structure. Danger formation: due to the loose structure of shoulder joint, if you exercise improperly, it is easy to damage the soft tissue of shoulder due to instantaneous muscle strain; In addition, because the shoulder joint is often used in various movements of the upper body, the soft tissue around the joint will be rubbed and squeezed, which is prone to chronic strain or soft tissue inflammation. Safety warning: fully warm up before exercise so that muscles and ligaments can be fully stretched; The amount of exercise should be moderate, and all joints should be slightly bent during exercise to avoid excessive exercise and damage to joints due to resistance. July 0, 2009108: 43 no4: danger zone of female reproductive triangle: the reproductive triangle consists of transverse perineum muscle, urethral sphincter and three lower fascia. This triangle includes all the female reproductive organs, and the estrogen secreted by these organs maintains the unique menstruation, body shape, skin and body sensation of women. Danger formation: Because a woman's vagina is an open organ, if she is not careful, bacteria will March in. Because of this dark and humid environment, it is especially suitable for the growth of bacteria. When there is inflammation, the rich blood vessels in this area will allow bacteria to spread all the way up. Safety tip: Because this area is close to anus, there are many skin wrinkles and rich sweat glands, it is most important to clean and protect it. Especially during menstruation, sanitary napkins must be changed frequently to prevent blood stains from becoming a culture base for bacteria; Wash your hands before going to the toilet to prevent bacteria from invading. NO5: danger zone of bladder triangle which is easy to be injured by holding urine: This area consists of two ureters and urethral orifice. It is a place to store residual urine in the body, and the urinary system is one of the main ways for the body to detoxify. Therefore, the bottom of the bladder is the area where toxins and wastes stay the most. Danger formation: the mucosa at the triangle of bladder is only a thin layer of tissue, and the submucosal tissue lacks rich blood vessels. Therefore, the blood supply is insufficient and the self-protection ability is relatively poor. Most diseases in the bladder, such as cystitis, bladder tuberculosis and nephritis, occur here. In addition, although urine is generally sterile, it is easy to breed bacteria. If you hold your urine regularly, it will weaken the contractility of the bladder, and the urine cannot be completely emptied in the bladder, which will promote the formation of bacteria and inflammation. The bladder is connected with the kidney, and the kidney is easily injured. Safety warning: drink plenty of water, at least 1000 ~ 2000 ml per day, and pay attention to emptying the bladder regularly to avoid bacterial reproduction; Keep the urethral orifice clean and dry; Eat more foods containing vitamin E. In addition, studies have found that smoking will lead to a threefold increase in the incidence of bladder cancer. Therefore, quitting smoking is also very important.