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.
Neurological conditions: muscle weakness can be caused by cerebrovascular disease such as stroke and brain haemorrhage and spinal injury. Muscles which become partially or completely paralysed lose their normal strength and will eventually waste. Some recovery is possible but it will be slow and may not be complete.