Platelets are the formed elements that have a role in blood clotting, and would seal an injury to a vessel walls. The platelets are cell fragments. Platelets are also known as thrombocytes.
the vessel is made up of copper
An electric cautery is a monopolar high frequency electrocautery. A ligature vessel sealing system, on the other hand is a bipolar high frequency electrocautery.
Coagulation if you are referring to the bodies natural response.
Thrombus
Vascular spasm
The immediate response to blood vessel injury is -bleeding (external) -swelling/bruising (internal)
An aneurysm is a sac formed by abnormal dilation of a vessel wall. A cerebral aneurysm is one that forms in a cerebral artery.
The question is too broad. Are you talking about personal injury risk? Legal framework? Testing? What does the vessel contain? What is your purpose for being on the vessel, and who requested you to be there?
zone of differenation
From the vessel around and in the bone
Aneurysm
Aneurysm