What does the cranial cavity contain?

The cranial cavity is the space within the skull that houses the brain. This protective cavity is essential for safeguarding the brain from physical injury and providing a supportive environment for its functions. The brain is responsible for various critical processes, including thought, coordination, and the regulation of bodily functions.

The heart, lungs, and liver are located in other cavities within the body. For instance, the heart is situated in the thoracic cavity, which also contains the lungs. The liver is located in the abdominal cavity. Hence, the brain is the only organ specifically contained within the cranial cavity, making this choice the correct answer. Understanding the specific functions and locations of various organs in the body helps illuminate the significance of anatomical terms like 'cranial cavity.'