Eye photography “negative film”-retina
If you compare the eye to a camera, the cornea is a fixed-focus lens, the lens is a zoom lens, and the retina is an imaging film. It is located at the back of the eyeball, close to the inner wall of the eyeball, and is composed of countless photoreceptor cells, nerve conduction cells and nerve fibers. When the eyes feel the light, the external information will be presented on the “negative film” and quickly transmitted to the brain through the optic nerve.
The retina is particularly susceptible to injury. High myopia can make it thin and increase the risk of “tearing.” During strenuous exercise, the vitreous body may oscillate, which may cause the retina to detach from the eyeball, lose its photosensitive function, and eventually cause blindness.
Professor Chen Youxin, chief physician of the Department of Ophthalmology of Peking Union Medical College Hospital, said that examination of the fundus can usually find 80% of eye diseases, and it is recommended to check eyesight regularly. Normally, you should pay attention to reasonable use of your eyes and increase outdoor sports. People with high myopia should avoid strenuous exercises such as bungee jumping and boxing. They can eat more fresh vegetables, nuts, etc., and supplement vitamins and trace elements.
Ear drum-tympanic membrane
The tympanic membrane is a gray-white, translucent, elastic film between the external auditory canal and the tympanum. It is shaped like a funnel and is also called the eardrum. The external sound is transmitted to the tympanic membrane in the ear through the air, just like hitting the drumhead with drumsticks. When the vibration is transmitted to the brain, we can perceive the sound. The tympanic membrane can withstand certain air and water pressure, and can also resist infection.
Luo Jiasheng, director of the Department of Otolaryngology, Xi’an Fourth Hospital, said that many bad habits may damage the tympanic membrane. Once perforated, the middle ear cavity will lose its protection. For example, when using a hairpin or cotton swab to dig out the ear, it may scratch the external auditory canal and damage the tympanic membrane; flying, diving, or even being slapped may also cause damage to the tympanic membrane and affect hearing. To prevent damage to the tympanic membrane, we must first reduce bad ear habits and don’t just pick out your ears; try to wear swimming earplugs when swimming to prevent infection; avoid blowing your nose hard after catching a cold, otherwise you may get infection and cause otitis media.
The door in the heart-heart valve
The heart is composed of two chambers (left atrium and right atrium) and two chambers (left ventricle and right ventricle), which are the core bases for ensuring blood delivery. There are four doors in the “two rooms and two rooms”, namely the aortic valve, pulmonary valve, mitral valve and tricuspid valve, collectively referred to as “heart valves”, which are used to accurately control the direction and flow of blood circulation. However, in people with congenital valvular insufficiency, or with rheumatism or senile valve degeneration, various problems with heart valves may occur. For example, valvular stenosis is similar to that the “door” is not open, and blood delivery may be blocked; valve prolapse is equivalent to the “door” being dropped, and the blood flow may be out of control; congenital valve insufficiency is like the “door” is not closed after the blood is delivered. , Can cause blood to flow back.
Liu Jian, chief physician of the Department of Cardiology, Peking University People’s Hospital, said that valvular heart disease is “cunning” and may be asymptomatic in severe cases. It is recommended that the elderly or people with underlying diseases do cardiac color Doppler ultrasound regularly. Once abnormal valve shape or movement is found, timely intervention and treatment. Controlling blood pressure, blood lipids, and blood sugar within the normal range and maintaining a happy mood can reduce the burden on the heart and reduce the risk of valvular disease.
The protective film of the stomach wall-gastric mucosa
The gastric mucosa is a part of the gastric wall and is located in the inner layer of the mucosal layer. It can continuously secrete gastric acid, pepsinogen and gastric mucus, protect the gastric wall, and help the normal function of the stomach.
Hao Jianyu, director of the Department of Gastroenterology, Beijing Chaoyang Hospital, Capital Medical University, said that gastric mucosal injury is mainly due to the imbalance of offensive factors and defense mechanisms, and the offensive factors are mainly derived from gastric acid. Under normal circumstances, the gastric mucosal barrier can block gastric acid. If the mucosa is slightly damaged, it can also be repaired by itself through its repair ability. However, if the damage and repair process occur repeatedly, ulcers will form, and symptoms such as upper abdominal pain and bloating will appear.
After the gastric mucosa is damaged, 90% of gastric function will be affected to varying degrees. To protect the stomach, we must first start with a regular schedule and diet, and eat less irritating foods, such as high temperature, greasy, spicy food, strong tea and wine; when taking medicine, pay attention to whether there are side effects that damage the gastric mucosa. You can consult a doctor to take protective measures in advance. People who often have stomach upset, have a family history of gastric cancer, and take aspirin for a long time should pay special attention. Helicobacter pylori can survive stubbornly in a gastric acid environment and damage the mucous membrane. If the stomach is not adapted, check and eradicate this bacteria.
Cushion between joints-cartilage
Flexible joints give people the possibility to make various actions, but it is also easy to cause the bones at the “junction” to rub against each other and be damaged by collision. Cartilage is like a protective film for bones and joints, which acts as a cushion. Healthy cartilage is smooth and elastic, which can not only absorb shocks, but also help reduce bone wear and increase joint flexibility. Excessive exercise may cause cartilage damage, pain, inflammation and other problems.
Yang Huaqing, director of the Guyi Rehabilitation Center of Beijing Rehabilitation Hospital affiliated to Capital Medical University, reminded that good habits should be developed to protect joint cartilage, such as good sitting posture and avoid crossing the legs. When exercising, choose activities that do not hurt joints such as walking and swimming. Climb stairs and mountain climbs; keep your joints warm.
The soil that breeds life-endometrium
The fertilized egg is the starting point of life. After it is formed in the fallopian tube and stays for a short time, it will travel to the uterus and take root in the “soil” of the endometrium. The endometrium refers to the innermost layer of the uterine wall, which is composed of a functional layer on the surface and a basal layer on the deep part. The functional layer is affected by changes in ovarian hormones and will periodically thicken to prepare for possible implantation of fertilized eggs. It can be said that the thickness of the endometrium is one of the keys to the fertility of this “soil”. Too thin (less than 7 mm) or too thick (more than 14 mm) will affect the success rate of pregnancy.
Yang Shuhong, deputy chief physician of the Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, said that women should at least do the following: maintain positive emotions, negative emotions may cause endocrine disorders and affect hormone regulation; regular work and rest, irregular life will Disturb the balance of endocrine, indirectly affect the health of the endometrium; keep warm during menstruation, and warm the whole body, especially the abdomen, should be strengthened during the premenstrual period, which can relieve cramps and promote menstrual blood discharge.
In personal daily life, protect the various forms of “membrane” in the body, set an easy-to-reach small health goal every month, accumulate and make progress gradually, cultivate good living habits, and enhance our health awareness.