What is the Importance of Heart?
The heart is very precious parts of the body, main function of the heart circulates blood through the blood vessels of the circulatory system. Blood provides oxygen and nutrients to each part of the body. In human blood is located in between the lungs in the middle of chests. The heart has four chambers the upper two chambers are atria and lower two chambers are ventricles. It has a strong muscular wall and is made up of a special type of muscle called myocardium, which is found in heart only. Blood return in the heart through veins and at the same rate, in which it pumps and this process takes only one minute to complete the full circulation of the whole body.
The Heart Wall Consists of Three Layers
- Myocardium: it is the muscular middle layer, that contains striated cardiac muscle tissue and this is responsible for blood pumping and the action of hearts pumping.
- Endocardium: This lies inside the heart and it is very smooth and made up simple squalors epithelial and cells of a loose connective tissue. It prevents blood from also prevents blood from clotting and sticking to the inside of the heart.
- Epicardium: it is an outermost layer of the heart, which is made of connective tissue. Protecting the Inner structure of the heart and is visceral pericardium.
How does a Heart work?
The blood flows through the heart: De-oxygenated blood returning from the body enters the superior and inferior vena cava. Firstly it entering into the right atrium, is pump through the tricuspid valve into the right ventricle. Then it pumped from the right ventricle through the pulmonary semilunar valve to the pulmonary trunk. The blood in the lungs carries through the pulmonary trunk, releases carbon dioxide and absorbs oxygen. Through pulmonary veins, the blood returns to the heart. It enters into the heart again through the veins through the left atrium. The left atrium pumps blood through the bicuspid valve (mitral) into the left ventricle and contracts. Through the aortic semilunar valve, the left ventricle pumps blood into the aorta. Blood enters the systemic circulation from the aorta throughout body tissues until it returns to the heart. Then this process begins again in the same manner.
What are the Facts About Heart?
The weigh of the human heart is about approx 300 gm, the weight of heart in females is 25% less than males. The contraction phase systole, following by relaxation phase known as the diastole. The Systole of auricle – 0.15 seconds, ventricle – 0.30 seconds, auricles and ventricles in diastole-0.40 seconds. The heart beats are at a resting rate close to 72 beats per minute in the rhythmical form. This rhythm can be measure or count through the arteries near the wrist. This represents the count of the heartbeat. Some variations of the heart beats are also like adult man-64-72, adult women 72-82 and etc.
The heart needs to take care because it’s one of the main parts of the body and blood circulation is the main function of the heart without which a human can’t live. There are some factors which need to maintain a healthy heart. The heart disease is also known as cardiovascular disease. It refers to the condition that includes narrow or blocked blood vessel that can lead to heart attack, angina or stroke and some other like which affect of hearts muscle, rhythm and valves these are also a form of heart disease.
Heart disease are recognized through many symptoms, but every disease has different symptoms, symptoms are differentiated on the basis of gender, like for the same disease, the symptoms in the male and female body is different. In a situation when the heart is not able to pump blood to fulfill the requirement of the body is called heart failure. Some tests are compulsory to confirm the disease like ECG, blood test, nuclear scan and Coronary Angiography. Now a day’s a very healthy treatment are available for the disease.
What is the Working of Vagus Nerve?
The heart takes some signals from the vagus nerve and the nerve arise from the sympathetic trunk. These nerves influence, but it does not control the heart rate. Signals that go through these nerves arise from two paired cardiovascular centers in the medulla oblongata. The vagus nerve of the parasympathetic nervous system also needs to act to decrease the heart rate. This type of nerves also forms a network of nerves that lies between the heart called the cardiac plexus. Four-valve are present in the heart which stimulates the main function of the heart, a valve lies between the atrium and ventricle.
The valve which lies between the atrium and ventricle is atrioventricular valves. Valves lie Between the right atrium and the right ventricle is a tricuspid valve. The tricuspid valve consists of three cusps, which are connected to chordae tendinae.
Preventions To Keep a Heart Healthy
There are many ways to keep a heart healthy with the change in the daily activities like. Some exercises in the morning which increase strength in the body also provide the natural environment. Morning walk is also good for health, yoga is the best way to keep your mind stress free, to increase strength.
There are some special asana also in the yoga which is for particular purpose like Tadasana (strengthen the vertebral column)help for good blood circulation which is the main function of the heart, Vrikshasana (broadens the shoulders and opens the heart), Veerabhadrasana (keeps the heart rate in check) and etc. keep your heart away from smoke like, smoke of cigarettes. they are some prevention, everyone should follow them.