sports
The heart is in the chest? There are four chambers: left atrium, left ventricle, right atrium and right ventricle.
The lung is the main respiratory organ? The lung is located in the chest cavity, on both sides of the mediastinum, and in the left and right lobes.
Clean water
If you don't understand the problem, please refer to: capillary bleeding, body surface bleeding, arterial bleeding, venous bleeding.
Bandage hemostasis
1.A 2。 b？ 3.d？ 4. a? 5.c？
1.× 2.× ? 3.√ ? 4.√ ? 5.√ ? 6.√ ? 7.× ? 8.√ ?
Answer: first, avoid swimming before and after meals: swimming on an empty stomach will affect appetite and digestive function, and there will be accidents such as dizziness and fatigue during swimming; Swimming with a full stomach will also affect the digestive function, and it will also cause stomach cramps and even vomiting and abdominal pain.
Second, avoid swimming after strenuous exercise: swimming immediately after strenuous exercise will increase the burden on the heart; A sudden drop in body temperature will weaken resistance and cause colds, pharyngitis and so on. ?
Third, avoid swimming during menstruation: swimming during menstruation, germs easily enter the uterus, fallopian tubes and other places, causing infection, leading to irregular menstruation, excessive menstruation and prolonged menstruation. ?
Avoid swimming in unfamiliar waters: When swimming in natural waters, avoid rushing into the water. Under complicated circumstances, it is not advisable to swim around the water surface and underwater to avoid accidents. ?
5. Avoid long-term exposure to swimming: Long-term exposure can cause sunburn or acute dermatitis, also known as sunburn. In order to prevent sunburn, it is best to use an umbrella to shade the sun after landing, or rest in a cool place, or use a bath towel to protect the skin, or apply sunscreen to exposed parts of the body. ?
6. Avoid swimming without warm-up activities: the water temperature is usually lower than the body temperature, so you must do warm-up activities before entering the water, otherwise it will easily lead to physical discomfort. ?
7. Avoid eating immediately after swimming: You should take a break before eating after swimming, otherwise it will suddenly increase the burden on the gastrointestinal tract, which will easily lead to gastrointestinal diseases after a long time. ?
Eight, avoid swimming for too long: the skin generally has three reaction periods to cold stimulation. The first stage: after entering the water, stimulated by cold, the skin blood vessels contract and the skin color is pale. The second stage: after staying in the water for a certain period of time, the blood flow on the body surface expands, the skin turns from pale to reddish, and the skin turns from cold to warm. The third stage: the stay time is too long, the heat dissipation of body temperature is greater than fever, and the skin has goose bumps and chills. This is a taboo period for summer outing, so leave the water in time. Generally speaking, the swimming time should not exceed 1.5-2 hours. ?
Nine, avoid swimming with a history of epilepsy: whether it is a big attack or a small attack, there are moments when the attack is out of control. If it is suddenly induced in swimming, it will be "catastrophic". ?
Ten, hypertensive patients avoid swimming: especially intractable hypertension, drugs are difficult to control, swimming has the potential danger of inducing stroke, and should be absolutely avoided. ?
1 1. Avoid swimming for patients with heart disease: For patients with congenital heart disease, severe coronary heart disease, rheumatic heart valve disease and severe arrhythmia, they should "stay away from swimming". ?
Twelve, avoid swimming otitis media: whether it is chronic or acute otitis media, because water enters the inflamed middle ear, it is equal to "adding insult to injury", which makes the condition worse and even causes intracranial infection. ?
Avoid swimming with acute conjunctivitis: the virus of this disease, especially in swimming pools, spreads at an alarming speed and in a wide range. Even healthy people should avoid swimming in the swimming pool in the popular season. ?
Fourteen, avoid some skin diseases swimming: such as all kinds of ringworm, allergic skin diseases and so on. It not only induces urticaria and contact dermatitis, but also easily aggravates the condition. ?
Fifteen, avoid swimming after drinking: after drinking, a large amount of glucose stored in the swimming body is consumed, and hypoglycemia will occur. In addition, alcohol can inhibit the normal physiological function of the liver and hinder the transformation and storage of glucose in the body, thus causing accidents. ?
16. Avoid neglecting the hygiene after swimming: after swimming, wipe off the scale on your body with a soft dry towel, drop Chlorella or boric acid eye drops, and remove nasal secretions. If there is water in your ears, you can use "jumping on the same side" to discharge the water. Then do some relaxation gymnastics and body massage or take a nap in the sun 15-20 minutes to avoid muscle stiffness and fatigue. ?