spicules tend to occur on the sun in regional lymph nodes.
spicules tend to occur on the sun in regional lymph nodes.
where do spicules tend to occur on the sun?
regional lymph nodes
bullet::::- the most common feature is the presence of spicules, long thin fingers of luminous gas which appear like the blades of a huge field of fiery grass growing upwards from the photosphere below. spicules rise to the top of the chromosphere and then sink back down again over the course of about 10 minutes. similarly, there are horizontal wisps of gas called "fibrils", which last about twice as long as spicules.
chromosphere
osteons are components or principal structures of compact bone. during the formation of bone spicules, cytoplasmic processes from osteoblasts interconnect. this becomes the canaliculi of osteons. since bone spicules tend to form around blood vessels, the perivascular space is greatly reduced as the bone continues to grow. when replacement to compact bone occurs, this blood vessel becomes the central canal of the osteon.









































section::::examples in the human body.









































bullet::::- flat bones of the face









































bullet::::- bones of the skull (majority)









































bullet::::- clavicles









































section::::see also.









































bullet::::- endochondral ossification









































bullet::::- ossification









































section::::references.
intramembranous ossification