Lateral view of normal open temporomandibular joint (TMJ).

Fully open airway through use of jaw thrust or jaw lift.

Male patient slightly elevated in hospital bed, eyes open, shown from waist up.

Standing nurse looks down with mouth open as if speaking to someone.

open mouth with tongue raised as mercury thermometer is placed in right sublingual pocket.

Lateral view of skull with open mouth.

(Top l. ) Upper airway obstruction related to hypotonia; (top r. ) partial relief by head extension; (middle l. ) extreme hyperextension causing upper airway obstruction; (middle r. ) fully open airway through use of jaw thrust; (bottom l. ) oropharyng

Illustration of boy demonstrating proper use of metered dose inhaler with open-lip technique; canister mouthpiece is surrounded by lips.

Anterior view of head and face of a boy with his mouth open; auditory tube, anatomical structures and pharynx have been made visible upon the external anatomy.

Female patient opens mouth as gloved hand places thermometer under tongue to assess temperature.

(Step 2) Slide the airway into the nostril until its flange is flush against the opening of the nostril; at that point distal end will be in the oropharynx.

Open mouth