Where are the five dangerous triangles of the human body?

The five dangerous triangle areas of the human body are: face (composed by the line connecting the root of the nose and the corners of the mouth on both sides), under the occipital bone (including the first and second cervical vertebrae at the back of the neck), shoulders ( The position of the deltoid muscle at the joint between the upper arms), the female reproductive triangle (inside the reproductive organs); the bladder (consisting of the two ureteral orifices and the urethral orifice)

The specific manifestations are:

< p>1. Facial triangle: This triangular area is formed by the line connecting the root of the nose and the corners of the mouth on both sides. There are 6 veins on the head and face that can lead to the brain. They branch and communicate with each other to form a dense blood vessel network. This area has rich blood vessels, adequate nutrient supply, and relatively timely removal of waste and toxins. Therefore, the facial skin is the most sensitive and active, and systemic problems are easily concentrated here.

2. Occipital triangle: The occipital triangle refers to the area under the occipital bone, including the first cervical vertebra and the second cervical vertebra at the back of the neck. Here are the most complex joints in the human body: the occiput---the first cervical vertebra---the second cervical vertebra joint. The left and right rotation, nodding, and shaking of the head are mainly accomplished by these joints. Normally, the cervical vertebrae are slightly convex forward, with nerves and arteries running through the middle. This curvature can easily increase the elasticity of the cervical vertebrae and slow down head vibrations.

3. Shoulder triangle: The shoulder triangle is equivalent to the position of the deltoid muscle in the joint between the upper arms. The muscles in this area are thick. The deltoid muscle surrounds the shoulder joint from the front, outside and back. The axillary nerve is distributed in it and controls the contraction and relaxation of the deltoid muscle. Other joints in the body can only perform two movements: flexion and extension, but the shoulder joint can perform movements in five directions due to its special ball-and-socket structure.

4. Female reproductive triangle: The reproductive triangle is composed of the deep transverse perineal muscle, the urethral sphincter and the three layers of fascia below. This triangular area includes all the female reproductive organs. The estrogen secreted by these organs allows women to maintain their unique menstruation, body shape, skin and body feeling.

5. Trigone of bladder: This area is composed of three connections between the two ureteral orifices and the urethral orifice. This is where residual urine in the body is stored, and the urinary system is one of the main ways the body detoxifies. Therefore, the bottom of the bladder is the area where the most toxins and wastes stay.