AP BIOLOGY

Detailed explanation-1: -The correct answer as to which functions at the same organizational level as the kidney in the human excretory system would be the urinary bladder.

Detailed explanation-2: -The important functions performed by the excretory system include-elimination of wastes, eliminate waste byproducts excreted by the cells, prevent the accumulation of harmful chemicals in the body, and maintain a balanced chemical concentration in the body.

Detailed explanation-3: -The urinary system is also called the excretory system, because held within the urine are the various excreted products, including by-products such as urea and uric acid, drugs, excess body fluid and excess salts (electrolytes).

Detailed explanation-4: -The kidney and urinary systems help the body to eliminate liquid waste called urea, and to keep chemicals, such as potassium and sodium, and water in balance. Urea is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body.

Detailed explanation-5: -Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. All of them excrete wastes, and together they make up the excretory system .