Figure 19: Position 1 – view over larynx and pharynx, optic window (oF) = level of the palatal arch: a – with the tongue stuck out, the valleculae can be directly seen; b – pharynx and larynx in phonation of “I”; c – the Valsalva maneuver shows the structures of the thyroid cartilage and pouch (arrow: muscle-free triangle of the thyrohyoid membrane); d – valleculae and base of tongue prepare the kiwi bolus.