Question

the membrane covering the external surface of the bone ​

Answer 1

Answer:

periosteum covers the external surface of the bones except at the joints

endosteium covers the internal surface of the long bones

Answer 2

Periosteum Membrane

Explanation:

Periosteum, thick stringy film covering the surfaces of bones, comprising of an external sinewy layer and an internal cell layer (cambium).The external layer is made for the most part out of collagen and contains nerve filaments that cause torment when the tissue is harmed. It likewise contains many veins, parts of which enter the issue that remains to be worked out the osteocytes, or bone cells. These opposite branches go into the bone along channels known as Volkmann waterways to the vessels in the haversian trenches, which run the length of the bone. Strands from the internal layer additionally infiltrate the hidden bone, presenting with the veins to tie the periosteum deep down as Sharpey filaments.The inward layer of the periosteum contains osteoblasts (bone-creating cells) and is generally conspicuous in fetal life and early youth, when bone arrangement is at its peak.The periosteum covers all surfaces of the bone aside from those topped with ligament, as in the joints, and destinations for connection of tendons and ligaments. Stringy ligament regularly replaces the periosteum along grooves where ligaments apply pressure against the bone. The periosteum on the internal surface of the skull is additionally changed somewhat as it joins the dura mater, the layer securing the cerebrum.