The syringe

My medical object is a syringe. It is a hollow needle used to suck or inject liquids in a living body without losing oxygen. You push down the plunger which will push the liquid from the barrel through the hub and go out of the needle. For example, you can inject medicine into the astronauts by using the syringe. They can also take a sample of blood from a astronaut to see if they are healthy.

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