The Functions of the Heart and How the Heart Works in Our Body
The Functions of the Heart and How the Heart Works in Our Body
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What is the function of the heart and how does it work?
IntroductionBlood circulates throughout the bodies of vertebrate animals through the circulatory system. The main components of the human circulatory system are the heart, arteries, veins, and capillary networks. Before learning about their functions, it is essential to understand their structure and location.
The heart is a powerful pump of the circulatory system. It continuously contracts and relaxes to circulate blood throughout the body. The human heart is located in the chest cavity, between the two lungs and above the diaphragm. Its broader part faces upward, while the pointed end extends downward.
How many functions are there in the heart?
Between these two layers is pericardial fluid, which helps the heart during contraction and relaxation.
The human heart consists of four chambers. The walls of the atria are relatively thin, whereas the walls of the ventricles are thick and muscular.
What is the heart function called?
The blood vessels that carry blood from the heart to different parts of the body are called arteries. The walls of arteries are thick and composed of three layers. They do not contain valves, and blood flows through them rapidly. Arterial pulse can be felt.
Arteries gradually divide into smaller branches and eventually form fine capillary networks. Generally, arteries carry oxygenated blood. However, the pulmonary artery is an exception—it carries carbon dioxide–rich blood to the lungs.
Read more:How to properly take care of an orange tree?The human circulatory system consists of the heart, arteries, veins, and capillaries. The heart acts like a pump, rhythmically contracting and relaxing to circulate blood throughout the body. As a result of this process, oxygen and nutrients are delivered to all body cells, and waste products are removed.
.jpeg "The Functions of the Heart and How the Heart Works in Our Body")
Why is the heart shaped like ❤?
The heart beats rhythmically like an automatic pump. This rhythmic beating is called the heartbeat. The human heart is myogenic in nature, meaning it can contract and relax on its own without any external stimulus.
One complete cycle of contraction and relaxation of the heart is called the cardiac cycle. This process keeps blood circulating in the body.
Method of Measuring Heartbeat or Pulse Rate
By gently pressing the index, middle, and ring fingers on the radial artery at the wrist, the number of pulses per minute can be counted. The pulse is felt most clearly with the middle finger. The number of pulses per minute is called the pulse rate.
The normal pulse rate of an adult is 60–100 beats per minute. In children, it may be as high as 100–140 beats per minute. Physical exertion, fear, excitement, fever, or severe pain can increase the pulse rate.
What Is High Blood Pressure
High blood pressure is medically known as hypertension. When blood pressure exceeds the normal level determined for a person’s age, it is called high blood pressure.
If a person’s systolic pressure is 160 mm of mercury or higher and diastolic pressure is 95 mm of mercury or higher, the person is considered to have high blood pressure. Excess body weight, excessive salt intake, mental stress, diabetes, and a sedentary lifestyle increase the risk of this condition.
Ways to Prevent High Blood Pressure
* Maintain a healthy body weight
* Reduce intake of salt and fatty foods
* Avoid smoking
* Exercise regularly
* Get adequate sleep
* Avoid mental stress
.jpeg "The Functions of the Heart and How the Heart Works in Our Body")
Why is the heart shaped like ❤?
The heart beats rhythmically like an automatic pump. This rhythmic beating is called the heartbeat. The human heart is myogenic in nature, meaning it can contract and relax on its own without any external stimulus.
One complete cycle of contraction and relaxation of the heart is called the cardiac cycle. This process keeps blood circulating in the body.
Method of Measuring Heartbeat or Pulse Rate
By gently pressing the index, middle, and ring fingers on the radial artery at the wrist, the number of pulses per minute can be counted. The pulse is felt most clearly with the middle finger. The number of pulses per minute is called the pulse rate.
The normal pulse rate of an adult is 60–100 beats per minute. In children, it may be as high as 100–140 beats per minute. Physical exertion, fear, excitement, fever, or severe pain can increase the pulse rate.
What Is High Blood Pressure
High blood pressure is medically known as hypertension. When blood pressure exceeds the normal level determined for a person’s age, it is called high blood pressure.
If a person’s systolic pressure is 160 mm of mercury or higher and diastolic pressure is 95 mm of mercury or higher, the person is considered to have high blood pressure. Excess body weight, excessive salt intake, mental stress, diabetes, and a sedentary lifestyle increase the risk of this condition.
Ways to Prevent High Blood Pressure
* Maintain a healthy body weight
* Reduce intake of salt and fatty foods
* Avoid smoking
* Exercise regularly
* Get adequate sleep
* Avoid mental stress
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What Is Cholesterol
Cholesterol is a complex fatty substance present in almost all cells of the human body. It is transported in the blood in the form of lipoproteins. There are two types of lipoproteins:
HDL (High-Density Lipoprotein)** – beneficial
LDL (Low-Density Lipoprotein)** – harmful
When LDL levels are high, cholesterol accumulates inside blood vessels, narrowing them and increasing the risk of heart disease and stroke.
Ways to Keep the Heart Healthy
* Eat a balanced diet
* Maintain an ideal body weight
* Eat more vegetables and fiber-rich foods
* Avoid excessive sweets and fatty foods
* Exercise regularly and walk daily
* Quit smoking
* Ensure adequate sleep and mental peace
Diabetes (Diabetes Mellitus)
Diabetes is a metabolic disease in which the level of glucose in the blood increases. It occurs due to a lack of insulin or reduced effectiveness of insulin. Diabetes damages the heart, kidneys, and eyes, and increases the risk of heart disease..jpeg "The Functions of the Heart and How the Heart Works in Our Body")
Ways to Control Diabetes
* Control diet
* Exercise regularly
* Take medication or insulin when necessary
* Regularly monitor blood glucose levels
What Is Cholesterol
Cholesterol is a complex fatty substance present in almost all cells of the human body. It is transported in the blood in the form of lipoproteins. There are two types of lipoproteins:
HDL (High-Density Lipoprotein)** – beneficial
LDL (Low-Density Lipoprotein)** – harmful
When LDL levels are high, cholesterol accumulates inside blood vessels, narrowing them and increasing the risk of heart disease and stroke.
Ways to Keep the Heart Healthy
* Eat a balanced diet
* Maintain an ideal body weight
* Eat more vegetables and fiber-rich foods
* Avoid excessive sweets and fatty foods
* Exercise regularly and walk daily
* Quit smoking
* Ensure adequate sleep and mental peace
Diabetes (Diabetes Mellitus)
Diabetes is a metabolic disease in which the level of glucose in the blood increases. It occurs due to a lack of insulin or reduced effectiveness of insulin. Diabetes damages the heart, kidneys, and eyes, and increases the risk of heart disease.
.jpeg "The Functions of the Heart and How the Heart Works in Our Body")
Ways to Control Diabetes
* Control diet
* Exercise regularly
* Take medication or insulin when necessary
* Regularly monitor blood glucose levels
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Conclusion
From the above discussion, we have gained a detailed understanding of the structure and function of the heart, high blood pressure, cholesterol, and diabetes. By being aware of these issues and following a healthy lifestyle, it is possible to keep the heart healthy and ensure a long and healthy life.
Conclusion
From the above discussion, we have gained a detailed understanding of the structure and function of the heart, high blood pressure, cholesterol, and diabetes. By being aware of these issues and following a healthy lifestyle, it is possible to keep the heart healthy and ensure a long and healthy life.
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