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lumen

hollow part of the needle

bevel

slanted end of the needle

barrel

part of syringe that hold medication

hub

where needle meets syringe

thumb plunger

pushes medication through syringe

flange

designed for index an middle finger to hold while thumb plunger is pushed

lumen

hollow part of the needle

gauge

size of the needle

bottom of rubber stopper

where medication is measured with barrel gauge

break the seal

pull plunger back and forth to loosen the seal

safety device

activated immediately after injection

sheath

covers the needle

shaft

the needle's outer portion

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