No, it is a blood clot attached to the interior wall of an artery or vein
Platelets.
An embolus is a foreign object, such as a blood clot or bit of tissue or tumor, that is circulating in the blood.
An embolus is a piece of solid matter circulating in the bloodsteam. If it becomes stationary and obstructs, it is a thrombus.
Bone is living tissue, it is not just a piece of rock, and it needs blood to live, as any other tissue in the body does. Also, the interior of a bone contains marrow, which is where new blood cells are made. Bones have other purposes, aside from their structural purpose.
none
sequestrum
A piece of necrotic bone tissue is called sequestrum. It refers to a segment of dead bone separated from healthy bone as a result of avascular necrosis or other conditions affecting blood supply to the bone.
Lung tissue is denser than water and will sink when placed in it.
The first circulating $20 gold pieces were made in 1850.
Tissue is made up of similar cells, and organs are made up of similar tissues.
Sure, here is a short declamation piece titled "Blood in Me": "I am made of blood and bones, A mixture of strength and vulnerability. But do not mistake my kindness for weakness, For within me flows the blood of warriors, ready to fight for what is right."
And suffer a horrible painful demise.