The step in first aid for bleeding which slows the flow of blood is the vascular spasm, where the blood vessel contracts to reduce blood loss. This occurs along with the formation of a platelet plug and coagulation, which are key components of the hemostasis process to stop bleeding.
First Aid for Bleeding: Slowing the Flow of Blood
The step in first aid for bleeding that specifically slows the flow of blood is known as vascular spasm. This is the body's immediate response to a blood vessel injury. During a vascular spasm, the smooth muscle in the walls of the blood vessel contracts, which helps to significantly reduce the flow of blood.
This vascular spasm along with the formation of a platelet plug and the process of coagulation are all part of the hemostasis process, effectively preventing further loss of blood from the damaged vessel. Clotting begins with substances released by the injured vessel wall signaling the start of blood clotting and platelets gathering at the site to form a plug, while coagulation forms a more durable blood clot to permanently seal the wound.