endoscope	a long, thin medical device that is used to examine the hollow organs
excise	to remove diseased tissue
shaft	the flexible part of the endoscope
obstruction	something that blocks the road
coil	solenoid
magnet	an object that is able to attract iron
an incision	small surgical cut
a biopsy	the process of removing and examining a small amount of tissue
an orifice	small hole
a shaft	a rod
a bore	a drill
tissue	a group of connected cells
to revolve	to move around
comprehensive	complete
invaluable	extremely useful
to spin	to move around
windings	coils
an extent	amount
gradient	how steep a slope is
to conform to	to adapt to
to pinpoint	to define
narrow	slimline
a beam	a line of light
insulated	covered
comprehensive	including everything that is necessary
trauma	emotional shock
array	matrix
a silhouette	an outline
an ailment	an illness