This isnt homework, but I need to get it to move forward in Anatomy!?

Question

2 questions

1. Describe how a long bone receives its blood supply.
2. also, trace the path of nutrient delivery to the osteocytes

Any help would be very appreciated!!

Answer 1

A long bone receives its main blood supply usually through an artery as well as a corresponding vein that enter and exit the bone through the nutrient foramen. These branch into smaller vessels within the bone, but in large part the bone receives nutrients through diffusion, which is aided through loading of the bone. Osteocytes are connected to one another through canals called canniliculi and gap junctions. I beleive, however, if I am remembering correctly that these junctions are more important in cell communication than anything else. The situation is different in a growing bone, with an area of vascular invasion expanding down the length of the disphysis, and I also beleive that this blood supply crosses the physis in growing bones into the epiphysis, but you may want to look that up. That's all I can remeber from bone lectures, but I hope it was a little helpful. Also, in osteons of lamellar bone, the central canal is occupied by a capillary that invaded the bone during osteoclastic activity, and these osteons are connected by volkman's canals.

Answer 2

Well I am not sure, but I guess good nutrition with a lot of calcium, and the rate of exercise