A flexible instrument, passed through a body channels for withdrawal of fluids from or introduction of fluids into the body cavities, is called a:

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A catheter is a flexible tube-like instrument that can be passed through body channels such as the urethra or veins to withdraw fluids or introduce fluids into body cavities. A cautery is a device used to burn or destroy tissue, a hemostat is a tool used to clamp blood vessels to control bleeding, cystocentesis is the puncture of the bladder with a needle to collect urine, and an endotracheal tube is a tube inserted through the mouth into the trachea to assist with breathing.

A Flexible Instrument, Passed Through a Body Channels for Withdrawal