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During inspiration, the high positive pressures in the pulmonary blood vessels pushing out are met by negative pressures distending the blood vessel and placing increased stress on the walls. Studies in vitro show that significant disruption of the pulmonary capillaries occurs at pressures of approximately 80 mmHg.
Damaged blood vessels dilate, producing bleeding within the tissue. The body's normal response includes forming a small blood clot to stop the bleeding and allowing a clot of special cells, called fibroblasts, to form. This begins the healing process by laying down scar tissue. Therefore, the inflammatory stage is the first phase of healing.
Bleeding, hemorrhage, haemorrhage or blood loss is blood escaping from the circulatory system from damaged blood vessels. [1] Bleeding can occur internally , or externally either through a natural opening such as the mouth , nose , ear , urethra , vagina or anus , or through a puncture in the skin .
A female high school volleyball player who was injured while competing against a male player last year testified Tuesday to the mental and physical trauma she’s dealt with since the incident.
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A subconjunctival hemorrhage can often occur without any obvious cause or harm to the eye. A strong enough sneeze or cough can cause a blood vessel in the eye to burst. Hyphema is a result of blunt or penetrating trauma to the orbit that increases intraocular pressure, causing tears in the vessels of the ciliary body and iris.
The Eagles receiver played on Sunday, but he wasn't at his best.
An embolism involves the occlusion of blood vessels by an embolus. [1] Arterial occlusion by an embolus is termed 'arterial embolism'. An embolus is an agent that blocks blood flow by physically obstructing blood vessels. [1] This includes gas bubbles, [18] fatty deposits, amniotic fluid, [19] blood clots, and foreign material. Arterial emboli ...