1.
How do the lungs function as excretory organs?: They excrete carbon dioxide and water vapor (the wastes of cellular respiration)
2.
How do the sweat glands of the skin function as excretory organs?: They excrete wastes such as water, salts, and a small amount of urea. This mixture is known as sweat, or perspiration.
3.
How does the liver function as an excretory organ?: It gets rid of excess amino acids. The amino groups are removed and converted into urea. The liver is also responsible for the breakdown of red blood cells.
4.
In humans, the filtrate produced by the nephrons is temporarily stored in the ________: Urinary bladder
5.
In humans, the organ that breaks down red blood cells and deanimates amino acids is the ________: Liver
6.
In humans, urine is eliminated from the bladder through the ________: Urethra
7.
Nitrogenous wastes are produced as a result of the metabolism of ________: Amino acids
8.
The basic structural and functional excretory units of the human kidney are known as ________: Nephrons
9.
The excretory organ associated with the storage of glycogen is the ________: Liver
10.
The principal components of urine are...: Water, urea, and salts
11.
What are the two major functions of human kidneys?: They remove urea from the blood and they regulate the concentrations of most of the substances in the body fluids
12.
What is the principal nitrogenous waste in humans?: Urea
13.
Which human body system includes the lungs, liver, skin, and kidneys?: Excretory
