Earth's Atmospheric Layers. Diagram of the layers within Earth's atmosphere. Troposphere. The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.Stratosphere. The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high.he troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.
A bruise, or contusion, is a type of hematoma of tissue in which capillaries and sometimes venules are damaged by trauma, allowing blood to seep, hemorrhage, or extravasate into the surrounding interstitial tissues.
A quadriceps contusion is one of the more common injuries seen in athletes competing in contact sports and results from a direct blow to the front of the thigh.This type of injury often goes undertreated and may result in serious complications for the athlete.ecause of the location of the quadriceps, they can be subject to direct blows during sports competition. A deep quadriceps contusion can be one of the most disabling injuries for an athlete because injury to these muscles can severely impact an athleteâs ability to effectively use his/her leg.