The characteristics of the blood vessels of preschool children include thick diameters and abundant capillaries, so they need to pay attention to wearing loose clothing to avoid local circulatory disorders.
Compared with adults, preschoolers have their own characteristics of the circulatory system. In terms of blood vessels, pre-school children have thick blood vessel diameters, but short blood vessel lengths and abundant capillaries. The walls of the blood vessels are thin, the elasticity of the arterial vessels is less than that of adults, and their blood pressure is lower due to the smaller role of their elastic reservoirs.
In addition, the blood circulatory system of preschool children is characterized by a small overall blood volume, low blood organic fraction, a lower proportion of coagulation substances than in adults, and a fast heart rate.
Due to the above characteristics of the circulatory system of pre-school children, attention should be paid to loose clothing, scientific exercise and activities, and the intensity of activities should not be too high in daily life.