the heart
The heart, which is the main organ of the human body, is located in the middle of the thoracic cavity and below the diaphragm, and tends slightly to the left side of the chest; it is between the shear bone and the thoracic vertebrae. The heart is a hollow member surrounded by strong muscles from the outside. To maintain its integrity, it is surrounded by a membrane known as the tampon. The size of the heart is about the size of the hand, and the blood is pumped to a distance of ten meters.
The heart consists of right and left atrium, left and right ventricles, pulmonary artery, pulmonary vein, aortic artery, upper and lower ureterine veins.
Heart characteristics
- The heart functions as a two-way pump; it absorbs the non-pure blood from the rest of the body through the veins, and injects the pure blood of the body through the arteries.
- The heart is a permanent muscle working by constriction and continuous progression ceaselessly.
- The heart pumps an average of 70 milliliters of blood / time, and the amount of blood paid per minute is five liters for adults.
Heart beat
Heart rate is the common name among people while scientifically known as pulse; the amount of wave that arises in the arteries due to heart constriction to pump blood to the rest of the body. Heart rate can be measured by the process of sensitivity to the major arteries in the body in specific places, including:
- Carotid artery in the neck.
- The radial artery in the wrist is hand.
- Thoracic artery artery.
- Elbow joint from the front.
- The knee joint.
- Hinged joint.
- Foot Introduction.
- Temporal artery.
- Place the ear above the chest.
Heart rate
The rate of heart rate or pulse is the normal amount of blood pumped from the heart through the arteries per minute in the body’s natural state away from any external influences, and this rate varies according to the age range; it is the highest rate of fetus in the womb of the mother by 150 beats / minute while less The rate of aging is 60 beats per minute.
Doctors noted that the rate of heart rate in children and newborns is higher than in adults; while in adults ranging between 80 – 60 beats / minute, children have 100 beats / minute, and newborns and infants 130 beats / minute.
Change in heart rate
The rates to which we refer are the natural rates by age group, and any change in the increase or decrease has several indicators:
- The rapid and strong pulse indicates fear.
- Rapid and weak pulse indicates low blood pressure.
- Lack of pulse indicates heart failure.
- An impulsive pulse indicates an obstruction around the artery or an interruption.