Final answer:
The Haversian canal, also known as the central canal in the osteon, contains blood vessels, nerves, and lymphatic vessels. This statement is false.
Step-by-step explanation:
The statement that Haversian canals contain blood vessels only is false. The Haversian canal is a central canal in the osteon that contains blood vessels, nerves, and lymphatic vessels. It is also known as the central canal or the Haversian canal. These vessels and nerves branch off through perforating canals, known as Volkmann's canals, to reach the periosteum and endosteum.