Vasoconstriction
The reduction of the diameter in the lumen is called vasoconstriction. This is when the blood vessels become narrower due to the contraction of smooth muscle cells in the vessel walls, reducing blood flow.
The central opening of a vessel is called the lumen. It is the hollow space within the vessel that allows for the passage of fluids, such as blood in blood vessels or sap in plant vessels.
The minimum stimulus needed to cause a contraction is called the threshold stimulus. This is the minimal level of stimulation required to activate muscle fibers and initiate a contraction response.
A ceramic vessel with a spigot that is made to hang on a wall is called a "wall-mounted ceramic water dispenser."
The process you are referring to is called hemostasis. This involves the tightening of the fibrin clot to seal the damaged vessel and prevent excessive bleeding.
vasoconstriction
Angiospasm is sudden contraction of a blood vessel. In contrast, vasoconstriction is the normal process of contraction of a blood vessel.VasoconstrictionAngiospasm
vasomotor center
Brig - a two masted vessel square rigged on both masts
This is called myosin-regulated contraction. The entire muscle acts as a draw-string and constricts the vessel and slows blood flow.
The reduction of the diameter in the lumen is called vasoconstriction. This is when the blood vessels become narrower due to the contraction of smooth muscle cells in the vessel walls, reducing blood flow.
It is called concentric isotonic contraction.
An involuntary muscle contraction is called a spasm.
A single-masted sailing vessel is called a 'sloop-rigged' vessel.
This is due to contraction of the biceps, and is known as flexion.
Duyfken is the name of his vessel
The contraction of the heart chambers in a regular cycle is called systole