The larynx serves three major purposes, protecting the airway, phonation, and respiration. During eating and drinking, the muscles and folds of the larynx work together to funnel food away from the trachea. False vocal cords are also essential to preventing air from escaping from the lungs when necessary. The true vocal cords are held close together to speak and separated to breathe.
The shape of the nose and hair follicles are structural adaptations in the nasal cavity that allow it to carry out its functions. Mucous is also an adaptation needed to carry out the functions in the nasal cavity.
Structural and Behavioral
The structural modification in the salivary glands that allow them to carry out their functions are the different sized glands and their location. The larger of the two glands is the parotid gland. The smaller of the two salivary glands is the submandibular gland.
The cactus has a number of structural adaptations that allow it to live in the harsh conditions of the desert. Many other plants lack these adaptations and cannot survive in a desert.
Alligators have many adaptations that allow them to be some of the fiercest hunters. Their adaptations include teeth, skin, webbed feet, ability to hold their breath, and their eyes.
It's the vocal cords which are housed by the larynx
its trunk
One of the interesting adaptations that parrotfish have is the ability to change from female to male. Another of their adaptations are their teeth, which allow them to eat coral.
That would be their wings
gills
fish
They have thick coats which camouflage and insulate them, sharp canines which tear apart the insides of their prey and large padded feet which allow them to run fast over snow while their hoofed prey sinks and stumbles.