Search results
Results from the WOW.Com Content Network
The bruise then remains visible until the blood is either absorbed by tissues or cleared by immune system action. Bruises which do not blanch under pressure can involve capillaries at the level of skin, subcutaneous tissue, muscle, or bone. [4] [5] Bruises are not to be confused with other similar-looking lesions.
Lead is able to pass through the endothelial cells at the blood brain barrier because it can substitute for calcium ions and be taken up by calcium-ATPase pumps. [202] Lead poisoning interferes with the normal development of a child's brain and nervous system ; therefore children are at greater risk of lead neurotoxicity than adults are. [ 203 ]
Some hematomas are visible under the surface of the skin (commonly called bruises) or possibly felt as masses or lumps. Lumps may be caused by the limitation of the blood to a sac, subcutaneous or intramuscular tissue space isolated by fascial planes. This is a key anatomical feature that helps prevent injuries from causing massive blood loss.
So, if you bruise often, it means those capillaries are extra fragile—a vulnerability primarily caused by aging; medications including steroids, blood thinners, and over-the-counter pain killers ...
Because diabetes affects the capillaries, the small blood vessels which feed the skin, thickening of the skin with callus increases the difficulty of supplying nutrients to the skin. [11] Callus formation is seen in high numbers of patients with diabetes, and together with absent foot pulses and formation of hammer toe , [ 12 ] [ 13 ] this may ...
Damaged sweat and sebaceous glands, hair follicles, muscle cells, and nerves are seldom repaired. They are usually replaced by the fibrous tissue. The result is the formation of an inflexible, fibrous scar tissue. Human skin cells are capable of repairing UV-induced DNA damages by the process of nucleotide excision repair. [2]
The actual skin colour of different humans is affected by many substances, although the single most important substance determining human skin colour is the pigment melanin. Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin colour of darker-skinned humans.
She continued: “I would have real bruises all over my back and body and legs. And so, I’d be seeing it and my brain would say, ‘Well, hold on. You’re hurt.’