The heart then pumps the oxygenated blood out to the body via the aorta (the great artery arising from the left ventricle of the heart). The bronchial arteries are blood vessels that branch off from the aorta to supply blood and nutrition for the lung itself and the bronchial tubes.
Some people experience weakness in a certain area of their bodies, such as the arms or legs. Others may experience full body weakness, which is often the result of a bacterial or viral infection such as influenza or hepatitis.
many causes of weakness feeling tired fatigue and measurable muscle weakness symptoms weakness feeling tired or general fatigue marked by reduced strength in your muscles can have many causes a cause for weakness can have you feel weak all over or only in one area limb and single muscle your loss can be measurable or without any calculable strength loss if weakness is your only noticeable symptom and you are trying to figure out its cause this quest of self diagnosis is not often an easy task some symptom instigators of fatigue are enumerated to give you a sense of the challenge