Question

Haversian system is a diagnostic feature of

• A. Avian bones
• B. All animals
• C. Mammalian bones only
• D. Reptilian bones

Answer 1

The correct option is C Mammalian bones only

The Haversian system is the cylindrical, column-like structure in compact bones. It is also known as osteon, which is a series of concentric circles, called lamellae found in compact bones of mammals. Down the middle of each of these systems is a hollow tube that holds a blood vessel.
Thus, the correct answer is option (C), 'Mammalian bones only'.