The Heart is about the size of a persons fist. it weighs about 300 grams.
Adults have between 55 and 65 milliliters of blood in their body per kilogram of weight. That’s about 8 percent of the total body weight.
The muscle percentage of a person varies greatly. It depends on the fitness level, age and gender. Men have about 40 to 65 percent muscle, women between 31 and 41 percent.
The skeleton accounts for approximately 12 percent of body weight. Bone mass increases until about the age of 30, after which it steadily decreases.
The water percentage of a body varied according to the amount of fat. For women, the ideal value is between 45 and 60 percent. For men, it is slightly higher at 50 to 65 percent.
The digestive tract consists of the small, large and rectum. Together they weigh about 2 kilograms.
The skin is the organ with the largest surface area. Their proportion of body weight is about 20%.
Body percentage increases with age. for example, for women between the ages of 20 and 29, the normal value is 22 percent; 25 at the age of 40 to 49. For men of the same age it is 16 and 21 percent respectively.
The lung has a total surface area of about 80 to 120 m2 and weighs 1 kilogram.
The average human brain weighs 1.3 kilograms
