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Injuries of the middle and internal ear may include a perforated eardrum or trauma caused by extreme pressure changes. The ear is also highly sensitive to blast injury. The bones of the ear are connected to facial nerves, and ear injuries can cause paralysis of the face. Trauma to the ear can cause hearing loss. [40]
Lacerations – irregular tear-like wounds caused by some blunt trauma. Lacerations and incisions may appear linear (regular) or stellate (irregular). The term laceration is commonly misused in reference to incisions. [9] Abrasions (grazes) – superficial wounds in which the topmost layer of the skin (the epidermis) is scraped off.
Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue. [1] In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequence of biochemical events ...
In a major injury, if epithelial cell migration and tissue contraction cannot cover the wound, suturing the edges of the injured skin together, or even replacement of lost skin with skin grafts, may be required to restore the skin. As epithelial cells continue to migrate around the scab, the dermis is repaired by the activity of stem cells.
Skin trauma is serious and altering physical injury experienced by the skin or multiple layers of epithelial tissues. [1] This can be in the form of cuts, burns ...
The injury occurs due to trauma that results in a shearing force. [6] This force causes the layer of fat below the skin, the superficial fascia, to separate from the deep fascia and muscle beneath. [7] [6] This separation also damages blood and lymphatic vessels. [7] Blood and lymphatic fluid can then fill the space that was created. [7]
A perineal tear is a laceration of the skin and other soft tissue structures which, in women, separate the vagina from the anus. Perineal tears mainly occur in women as a result of vaginal childbirth , which strains the perineum .
Concentrated instances of oxidative stress (alcohol, physical trauma, psychological stress, etc.) cause the liver to hemorrhage these porphyrins into the blood stream where they are then susceptible to oxidation. [citation needed] The strong association of PCT with Hepatitis C virus infection is not entirely understood.