GENERAL HISTOLOGY

BONE

STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a volkmann’s canal?
A
channels lying at right angles to the central canal, connecting blood and nerve supply of the periosteum to that of the Haversian canal
B
one of a network of tubes running through compact bone that contains blood vessels and nerves
C
dense fibrous membrane covering the surface of bones
D
tiny canals that link osteocytes
Explanation: 

Detailed explanation-1: -Transverse vessels, which run perpendicular to the long axis of the cortex, are called Volkmann canals; Volkmann canals connect adjacent osteons and also connect the blood vessels of the Haversian canals with the periosteum, the tissue covering the bone’s outer surface.

Detailed explanation-2: -Definition. Volkmann contracture is a deformity of the hand, fingers, and wrist caused by injury to the muscles of the forearm. The condition is also called Volkmann ischemic contracture.

Detailed explanation-3: -Perforating canals, also known as Volkmann’s canals, run at right angles to central canals. Perforating canals connect the central canal’s blood vessels with the periosteum’s blood supply.

Detailed explanation-4: -Haversian canals( are a series of microscopic tubes in the outermost region of bone called cortical bone that allow blood vessels and nerves to travel through them. Each haversian canal generally contains one or two capillaries and nerve fibres. The channels are formed by concentric layers called lamellae.

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