Final answer:
The cloaca is the organ in frogs where all waste products from the body are collected before being expelled. The excretory system includes the skin, liver, large intestine, lungs, and kidneys, which work together to eliminate different types of waste.
Step-by-step explanation:
The organ in a frog where all waste products empty into is known as the cloaca. This is a common cavity at the end of the digestive tract for the release of both excretory and genital products in amphibians, reptiles, birds, elasmobranchs, and some mammals.
In frogs, the digestive, excretory, and reproductive systems converge into the cloaca, allowing for the expulsion of wastes and gametes.
The organs of the excretory system that contribute to the process include the skin, which excretes sweat, the liver that breaks down substances in the blood and excretes bile, the large intestine that eliminates solid waste, the lungs responsible for excreting gaseous waste like carbon dioxide, and the kidneys, which are crucial for filtering the blood and forming urine.
All these organs work together to maintain the body's homeostasis by eliminating wastes and excess water through various means such as sweat, feces, urine, and exhaled gases.