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.
Anemia can happen when your body isnât producing enough red blood cells or the red blood cells donât contain enough iron-rich hemoglobin, says Amy L. Doneen, ARNP, medical director of the Heart Attack & Stroke Prevention Center. That lack of oxygen-rich blood in your body can make you feel tired and weak. While iron deficiency is the most common cause of anemia, other causes include heavy periods, sluggish bone marrow, vitamin B12 deficiency or a lack of folate in the diet, says Dr. Rindfleisch.