Narrowing of blood vessels takes place at low temperature.
At low temperature, the blood vessels get narrowed or vasoconstricted. This reduces the blood supply to the skin. There is less loss of heat by convection, conduction and radiation.
Blood vessels are networks of hollow tubes, similar to pipes, that carry blood to and from all parts of the body. These vessels bring blood in both ways, one from the heart to the rest of the body and the other from the rest of the body to the heart.
Role of blood vessels
- The gaseous exchange relies on blood vessels.
- Blood vessels assist in an organism’s ability to maintain a stable internal temperature.
- The blood vessels’ most significant function is to prevent blood loss during injuries.
- Both oxygenated and deoxygenated blood is pumped by blood vessels from and to the heart.
- Blood vessels assist in the transportation of minerals, water, nutrients, hormones, and all other requisite ingredients for various body metabolisms.