Check all of the following that assist the kidneys in excretion of nitrogenous wastes.Check All That Applyliverliversweat glandssweat glandsmusclesmusclesbloodbloodalveolialveoli

Liver and kidneys are the primary organs that assist in the excretion of nitrogenous wastes. The liver converts ammonia (a byproduct of protein metabolism and very toxic) into urea (less toxic), which is then transported through the blood to the kidneys for excretion.

Sweat glands also play a minor role in excreting nitrogenous wastes. When you sweat, small amounts of urea, uric acid, and ammonia are excreted along with the sweat.

Muscles do not directly assist in the excretion of nitrogenous wastes, but they do produce some of these wastes as byproducts of muscle metabolism.

Blood is the transport medium that carries nitrogenous wastes from where they are produced to the kidneys for excretion.

Alveoli in the lungs are primarily involved in gas exchange (oxygen and carbon dioxide), not in the excretion of nitrogenous wastes.

So, the liver, sweat glands, and blood assist the kidneys in the excretion of nitrogenous wastes.