Question

these are blood vessels that carry blood from the medullary cavity and periosteum to the osteon and run perpendicular to the long axis of the bone.
a sharpeys canals
b perforating canals
c osteochondral canals
d haversian canals
e lamellar canals

Explanation:

• Sharpey's canals: Incorrect. Sharpey's fibers are collagen fibers that attach periosteum to bone.
• Perforating canals: Correct. Perforating (Volkmann's) canals carry blood from medullary cavity and periosteum to osteon and run perpendicular to bone's long axis.
• Osteochondral canals: Incorrect. Not a standard term related to this description.
• Haversian canals: Incorrect. Haversian canals run parallel to bone's long axis within osteons.
• Lamellar canals: Incorrect. Lamellae are layers in bone; no such standard canal term.

Answer:

B. perforating canals