Condyle- it is a large rounded prominence fitting into a fossa. This type of bone marking is a process that forms joints forming i.e. the medial condyle of the femur (Mid Lands Tech, 2016).
Crest- it is slightly risen with protruded ridges. This type of bone marking is a process to attach connective tissues i.e. the iliac crest of the ilium that makes up the hip (Mid Lands Tech, 2016).
Epicondyle- it appears to be a bump on top of a bump. This type of bone marking is a process in attaching connective tissues i.e. the medial epicondyle …show more content…
These components alternate the amounts of calcium in the plasma allowing remodeling and growth of the bone. Parathyroid hormones (PTH) are released from the main cells of the parathyroid gland when calcium levels are too low. The PTH also affects osteoblast cells that are contained in the bone. However, binding of PTH to osteoblast inhibiting it resulting in osteoclast cells being indirectly stimulated through the inhibition of bone building. The parathyroid hormone will act upon collagenase enzymes to increase the breakdown of collagen within the bone, while increasing the activity to assist the erosion of bone. This process results in bone reabsorption taking place and an increase of calcium levels in the blood. The parathyroid hormone also increases the production with the active form of vitamin D through the kidneys. The calcitriol is located within the kidneys; this is where calcium absorption and phosphate reabsorption is amplified. Calcitriol is activated by the stimulation action of osteoblast that allows the amount of bone building to take place. Lastly, the hormone calcitonin opposes the function of the parathyroid hormone, however has a small part in the growth and remodeling of bone. It acts as an inhibitor of osteoclasts preventing erosion of the bone (NCBI,