The human heart contracts from the first moment of life until the last one.
Physiologists have determined that in the adult the heart makes from 60 to 72 beats per minute.In children the rate of heartbeat is much higher.
<span>Each beat of the heart is followed by a period of rest for the cardiac muscle. Each wave of contraction and a period of rest following it compose a cardiac cycle. </span>
<span>Each cardiac cycle consists of three phases:the first phase of short contraction is called the atrial systole.The second phase of a contraction of both ventricles is called the ventricular systole. The period of rest of the cardiac muscle is called the diastole.
</span>Heart disorders fall into two broad groups: congenital and acquired. Congenital heart defects are caused by structural defects. Acquired heart disease is mainly due to rheumatic fever.Congenital defects may result in cyanosis.The patient has blue lips, blue-finger and toe-nails.Symptoms depend on the type of heart disease. Sometimes, the defect is picked up on a routine examination; at other times there may by breathlessness, difficulty in walking or running, swelling of feet and puffiness of face.
Человеческое сердце сокращается с первого момента жизни до последнего. Физиологи установили, что у взрослого человека сердце совершает от 60 до 72 ударов в минуту.У детей частота пульса значительно выше. После каждого удара сердца наступает период отдыха для сердечной мышцы.Каждая волна сокращения и период отдыха после нее составляют сердечный цикл. Каждый сердечный цикл состоит из трех фаз:первая фаза короткого сокращения называется предсердной систолой.Второй этап сокращения обоих желудочков называется систола желудочка. Период отдыха сердечной мышцы называется диастола. Сердечные болезни(расстройства) делятся на две большие группы: врожденные и приобретенные. Врожденные пороки сердца обусловлены структурными дефектами. Приобретенные пороки сердца возникают в основном из-за ревматического артрита(лихорадки).Врожденные дефекты могут привести к цианозу.У пациента наблюдаются синие губы,синие пальцы рук и синие ногти на пальцах ног.Симптомы зависят от типа болезни сердца. Иногда, это обнаруживается( выявляется ) при обычном осмотре;в других случаях может быть одышка, затруднения при ходьбе или беге, отеки ног и одутловатость лица.
Sometimes teens think that parents are boring and annoying because they care about their children too much and control everything in their life.Parents don't let their children to decide everything as well as they think children are too young and unmature.And that's why teens want to prove them that they are enough independent to take some decisions about their life .
Как бы так ,пару тем накинула
Veliky Novgorod (until 1999 the official name — Novgorod) is a city in North-West Russia, the administrative center of Novgorod oblast, City of military glory.
Velikiy Novgorod — one of the oldest and most famous cities of Russia (in 2009 officially said 1150 years). The location of the calling Chronicles, Rurik and origin of the Russian statehood. In the Middle ages — the center of Novgorod Russia and then the Novgorod land centre in the old Russian and Russian States. In 1136 it became the first free-style Republic on the territory of the feudal Russia (from now on, when after the battle at the mountain Ganoi Prince Vsevolod I of Kiev fled from the battlefield, the powers of the Prince of Novgorod was severely limited). For a period of time beginning in 1136 and ending the year 1478, when Novgorod lost (as a result of the victory of Prince of Moscow Ivan III the Great over the people of Novgorod to the Moscow-Novgorod war, 1477-1478) political autonomy, in relation to the Novgorod land, it is customary to apply the term "Novgorod Republic" (government last used the designation of Lord Novgorod the Great).
Novgorod was not subjected to the Mongol invasion; although he paid tribute to the Horde, but retained the unique monuments of old Russian architecture of pre-Mongol period, and was the only one of ancient Russian cities, escaped the decline and fragmentation in the XI—XII centuries.
<span>The population of Veliky Novgorod — 221 954[3] people (2015); 90-e a place in Russia, it's about a third of residents of the area 90.08 km2.</span>
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1.cough
2. aspirin
3.sore throat,
We all live and earlier or later become old , unable to do certain things which are vital, just as water. When we are yet young it is a good idea to help those is need, By doing simple things it is feasible to make someone's life happier. For instance if you see an old woman carrying enormous number of heavy bags, carry them for her. Moreover when I see disabled people with different diseases riding in a carriage I do my best to help them reach their home safely. What do old people need? They need everything what youth: safety, food, happiness and love. When they know that someone carries after them they start feeling better and this is the most important feature on the last period of long life.