the blood vessels of the skin are located in the dermis.
the blood vessels of the skin are located in the dermis.
where are the blood vessels of the skin located?
the dermis
the dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. the dermis is tightly connected to the epidermis by a basement membrane. it also harbors many nerve endings that provide the sense of touch and heat. it contains the hair follicles, sweat glands, sebaceous glands, apocrine glands, lymphatic vessels and blood vessels. the blood vessels in the dermis provide nourishment and waste removal from its own cells as well as from the stratum basale of the epidermis.
human skin
schamberg's disease is a skin disorder that causes a discoloration of the lower extremities. it manifests in the lower extremities and it gradually moves up towards anywhere on the body. this condition is caused by leaky blood vessels near the surface of the skin. the cause of the leaky capillaries is still unknown, but it is responsible for the discoloration of the skin. since the blood vessels are weakened, red blood cells escape the blood vessels, where they end up near the surface of the skin. in one molecule of hemoglobin, there are four heme groups and each heme group contains one iron atom. iron is responsible for helping red blood cells transfer oxygen from the lungs to the cells and carry carbon dioxide from the cells to the lungs. when red blood cells escape the blood vessels, red blood cells break apart, releasing hemoglobin. as the hemoglobin has nowhere to go and cannot be reabsorbed back into the blood, it will break apart. iron is released from hemoglobin and deposited into the skin. the iron complex hemosiderin is responsible for the discoloration of the skin, which creates patches of orange and brown pigmentation.
schamberg disease