An endoscope (5000, 5300, 5500) for removing tissue at a surgical site, comprising: an elongated tubular body (5016, 5116) having a distal end and a proximal end, the distal end insertable within a mammalian cavity of a patient, the proximal end configured to remain outside the mammalian cavity of the patient; an instrument channel defined within the elongated tubular body (5016, 5116) and extending between a first opening at the proximal end and a second opening at the distal end, the instrument channel sized and configured to receive a removable surgical cutting assembly (5320, 6120, 6320) that defines an aspiration channel configured to fluidly couple, at a proximal end of the surgical cutting assembly (5320, 6120, 6320), to a suction source to remove material entering the endoscope (5000, 5300, 5500) via a distal end of the surgical cutting assembly (5320, 6120, 6320); a flexible torque delivery component (5138, 5560) configured to deliver torque generated by a torque generation component to an inner cannula (5330, 6130, 6332) of the surgical cutting assembly (5320, 6120, 6320) to cause the inner cannula (5330, 6130, 6332) to move relative to an outer cannula (5322, 6122, 6322) of the surgical cutting assembly (5320, 6120, 6320) to resect material entering the surgical cutting assembly (5320, 6120, 6320), the flexible torque delivery component extending from the proximal end towards the distal end of the elongated tubular body (5016, 5116), the flexible torque delivery component (5138, 5560) being one of a flexible torque coil or a flexible torque rope, the flexible torque delivery component (5138, 5560) including a plurality of layers of one or more threads, and each of the plurality of layers being wound in a direction opposite to a direction in which one or more adjacent layers of the plurality of layers is wound; and a coupling component (5150, 5350, 6350) integral to the elongated tubular body (5016, 5116) and positioned at the distal end of the elongated tubular body (5016, 5116) and adjacent to or surrounding the instrument channel, the coupling component (5150, 5350, 6350) including an inner wall through which a coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) may be disposed, wherein the coupling component (5150, 5350, 6350) is rotatably coupled to the flexible torque delivery component (5138, 5560) to provide the torque delivered by the flexible torque delivery component (5138, 5560) to the coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) and configured to cause the coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) to move the inner cannula (5330, 6130, 6332) relative to the outer cannula (5322, 6122, 6322) upon actuation of the flexible torque delivery component (5138, 5560). an elongated tubular body (5016, 5116) having a distal end and a proximal end, the distal end insertable within a mammalian cavity of a patient, the proximal end configured to remain outside the mammalian cavity of the patient; an instrument channel defined within the elongated tubular body (5016, 5116) and extending between a first opening at the proximal end and a second opening at the distal end, the instrument channel sized and configured to receive a removable surgical cutting assembly (5320, 6120, 6320) that defines an aspiration channel configured to fluidly couple, at a proximal end of the surgical cutting assembly (5320, 6120, 6320), to a suction source to remove material entering the endoscope (5000, 5300, 5500) via a distal end of the surgical cutting assembly (5320, 6120, 6320); a flexible torque delivery component (5138, 5560) configured to deliver torque generated by a torque generation component to an inner cannula (5330, 6130, 6332) of the surgical cutting assembly (5320, 6120, 6320) to cause the inner cannula (5330, 6130, 6332) to move relative to an outer cannula (5322, 6122, 6322) of the surgical cutting assembly (5320, 6120, 6320) to resect material entering the surgical cutting assembly (5320, 6120, 6320), the flexible torque delivery component extending from the proximal end towards the distal end of the elongated tubular body (5016, 5116), the flexible torque delivery component (5138, 5560) being one of a flexible torque coil or a flexible torque rope, the flexible torque delivery component (5138, 5560) including a plurality of layers of one or more threads, and each of the plurality of layers being wound in a direction opposite to a direction in which one or more adjacent layers of the plurality of layers is wound; and a coupling component (5150, 5350, 6350) integral to the elongated tubular body (5016, 5116) and positioned at the distal end of the elongated tubular body (5016, 5116) and adjacent to or surrounding the instrument channel, the coupling component (5150, 5350, 6350) including an inner wall through which a coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) may be disposed, wherein the coupling component (5150, 5350, 6350) is rotatably coupled to the flexible torque delivery component (5138, 5560) to provide the torque delivered by the flexible torque delivery component (5138, 5560) to the coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) and configured to cause the coupling member (5340, 6140, 6360) of the surgical cutting assembly (5320, 6120, 6320) to move the inner cannula (5330, 6130, 6332) relative to the outer cannula (5322, 6122, 6322) upon actuation of the flexible torque delivery component (5138, 5560).