Urea is removed from the kidney and is carried to them via the bloodstream. Nephrons present in the kidney, filter the waste products. Urea along with water and other wastes move to the renal tubules afterward. Urine then travels to bladder from the kidney and is stored there, until excreted out during urination.
E. all of the above
would be the appropriate answer
The heart is the system’s pump and the blood vessels are like the delivery routes and it is a muscle. The pumps are the beat.
The heart is a muscle about the size of a fist and it is the muscle in the body that works the hardest.
The statement that the heart muscle rests only between beats is true.
The nervous system and cardiovascular system
