Which term describes a canal-like or tube-like passageway within a bone?

Which term describes a canal-like or tube-like passageway within a bone?

• A. Notch
• B. Meatus
• C. Sinus
• D. Fossa

Answer: (B)

In bone anatomy, a canal-like passageway through a bone is called a meatus. It acts as a tunnel that allows structures such as nerves, blood vessels, or air to pass through. For example, the external acoustic meatus is the ear canal that channels sound toward the eardrum. Other terms describe different features: a notch is an edge indentation, a sinus is a hollow air-filled cavity, and a fossa is a shallow depression. Thus, the tube-like passageway within a bone is the meatus.

In bone anatomy, a canal-like passageway through a bone is called a meatus. It acts as a tunnel that allows structures such as nerves, blood vessels, or air to pass through. For example, the external acoustic meatus is the ear canal that channels sound toward the eardrum. Other terms describe different features: a notch is an edge indentation, a sinus is a hollow air-filled cavity, and a fossa is a shallow depression. Thus, the tube-like passageway within a bone is the meatus.