Valves help blood flow in one direction. True or false?

True

Explanation:

Functions from Valves are:

Stopping and starting flow.

Reduce or increase a flow.

Controlling the direction of flow.

Regulating a flow or process pressure.

Relieve a pipe system of a certain pressure

T

Explanation:

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.