Heart: one of the main organs of the human body
Curiosities about the human heart
- The heart acts as a kind of bomb, propelling blood throughout the body.
- The heart is a muscular and fibrous organ, ie composed mainly of muscles and fibers.
At rest, a person has blood pumped through the heart, throughout the body, in approximately 50 seconds.
The healthy heart of an adult weighs between 250 and 400 grams.
- An adult's heart size is slightly larger than an adult man's fist.
In an embryonic human being, the heart begins to beat after 21 days of conception. At this stage, she beats 70 to 80 times per minute (near her mother's heartbeat).
- Heart disease (heart disease) is treated and studied by cardiology (branch of medicine that studies the human heart).
- The heart of a resting adult makes 70 to 85 beats per minute. In physical activity, it can reach between 120 and 140 beats per minute.
- Every day, an adult's heart beats about 100,000 times. The heart of a person who has lived for about 80 years has beaten a lifetime of more than 3.5 billion times.
- The human heart pumps about 7,500 liters of blood a day.
- Heartbeats occur from electrical stimuli. It is in the sinus node (kind of natural pacemaker) that originates this electrical stimulus that makes our heart beat.
- The human heart is composed of four chambers: the upper ones are called atria (right and left) and the lower are called ventricles (right and left).