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.
Medications or substances causing Leg weakness. The following drugs, medications, substances or toxins are some of the possible causes of Leg weakness as a symptom. This list is incomplete and various other drugs or substances may cause your symptoms (see Leg weakness). Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments. 1  Acrivatine and Pseudoephedrine.