which is the correct sequence of events when skin is cut and bleeding occurs
Vascular spasm (Vasoconstriction) Platelet plug formation Clot formation
title: Wound healing text: Wound healing Wound healing is a complex process in which the skin, and the tissues under it, repair themselves after injury. In this article, wound healing is depicted in a discrete timeline of physical attributes (phases) constituting the post-trauma repairing process. In undamaged skin, the epidermis (surface layer) and dermis (deeper layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequence of biochemical events is set into motion to repair the damage. This process is divided into predictable phases: blood clotting (hemostasis), inflammation, tissue growth (proliferation), and tissue remodeling (maturation). Blood clotting may title: Skin repair text: is due to the presence of stem cells in the dermis and cells in the stratum basale of the epidermis, all of which can generate new tissue. When an injury extends through the epidermis into the dermis, bleeding occurs and the inflammatory response begins. Clotting mechanisms in the blood are soon activated, and a clot of scab is formed within several hours. The scab temporarily restores the integrity of the epidermis and restricts the entry of microorganisms. After the scab is formed, cells of the stratum basale begin to divide by mitosis and migrate to the edges of the scab. title: Internal bleeding text: is a form of internal bleeding. Bruises occur most often when blunt force trauma breaks small blood vessels inside the body, causing blood to leak out into surrounding tissue. If the blood leaks into tissue that is near the surface of the skin, this bleeding is visible as a discoloration of the skin called a bruise or contusion. Bruises are among the most common injuries and they are often minor, but bruises can sometimes be very severe in the case of serious injuries. Internal bleeding can be caused by blunt trauma such as high speed deceleration in an automobile accident, title: Raynaud syndrome text: When exposed to cold temperatures, the blood supply to the fingers or toes, and in some cases the nose or earlobes, is markedly reduced; the skin turns pale or white (called pallor) and becomes cold and numb. These events are episodic, and when the episode subsides or the area is warmed, the blood flow returns, and the skin color first turns red (rubor), and then back to normal, often accompanied by swelling, tingling, and a painful "pins and needles" sensation. All three color changes are observed in classic Raynaud's. However, not all patients see all of the aforementioned color changes title: Bleeding text: Bleeding Bleeding, also known as haemorrhaging, is blood escaping from the circulatory system. Bleeding can occur internally, where blood leaks from damaged blood vessels inside the body, or externally, either through a natural opening such as the mouth, nose, ear, urethra, vagina or anus, or through a wound in the skin. Hypovolemia is a massive decrease in blood volume, and death by excessive loss of blood is referred to as exsanguination. Typically, a healthy person can endure a loss of 10–15% of the total blood volume without serious medical difficulties (by comparison, blood donation typically takes 8–10% of the donor's