sphincters
sphincters
the first electronic computers were built before the invention of the transistor or integrated circuit chip. They used vacuum tubes for the processing and temporary memory. In Britain those tubes were called valves.
the first electronic computers were built before the invention of the transistor or integrated circuit chip. They used vacuum tubes for the processing and temporary memory. In Britain those tubes were called valves.
the first electronic computers were built before the invention of the transistor or integrated circuit chip. They used vacuum tubes for the processing and temporary memory. In Britain those tubes were called valves.
true
mouthpiece, valves, spit valves, slides, tubes and bell
vaccum tubes and valves.
The transistor was the invention that allowed electronics to move away from the use of vacuum tubes (also called valves).
The tubes are called as fallopian tubes.
They are called Fallopian tubes
These are called valves- some molluscs have two and are called BIVALVES, whilst others have three and are called TRIVALVES. The latter are held to be higher up the evolutionary scale. The bivalves are the clams, mussels, oysters and scallops. The adults all have two hinged shells (valves). Some of these animals circulate water carrying the microorganisms that they eat and oxygen for respiration through tubes called "siphons" that they can extend from between the shells on the anterior end so they can stay safely hidden in the mud or sand.
Caterpillars breathe through spiracles, openings in their exoskeleton that lead into tracheal tubes. These tubes encircle their bodies, branching out into tiny tracheoles, where oxygen diffuses into the adjacent cells, and carbon dioxide diffuses from the cells into the air. While most insects are small enough to allow for this process passively through normal diffusion, some insects require active ventilation. Where humans need to contract their muscles to breathe in, insects contract their muscles to force air out, relaxing to allow their bodies to expand again and let air in through the spiracles.