Final answer:
The correct answer about the excretory system is A) Key organs of the system include bladder, intestines, and kidneys. This system is vital for eliminating wastes and excess water from the body to maintain homeostasis.
Step-by-step explanation:
The correct statement about the excretory system is:
A. Key organs of the system include bladder, intestines, and kidneys.
The excretory system's primary function is to remove wastes and excess water from the body, which is crucial for maintaining homeostasis. This system includes several key organs:
- The kidneys filter blood to remove urea, excess salts, and water, forming urine.
- The large intestine is part of the digestive system, but it also plays a role in excretion by eliminating solid waste.
- The bladder stores urine until the body is ready to expel it.
- Additionally, the liver, lungs, and skin are also involved in the excretion process. The liver processes toxins and produces bile, the lungs exhale carbon dioxide, and the skin excretes waste through sweat.
It is important to note that while the digestive system also handles waste, it deals with the processing and absorption of nutrients from food and expels what remains, whereas the excretory system handles waste products that result from the body's metabolic processes.
The name circulatory system is not correct for the excretory system, as the circulatory system comprises the heart, blood, and blood vessels and is responsible for the transport of nutrients, oxygen, and wastes throughout the body.