MICROANATOMY

Detailed explanation-1: -divisions of the pharynx: the oral pharynx, the nasal pharynx, and the laryngeal pharynx. The latter two are airways, whereas the oral pharynx is shared by both the respiratory and digestive tracts.

Detailed explanation-2: -Oropharynx: The middle part of the throat connects to the oral cavity (mouth).

Detailed explanation-3: -Answer and Explanation: The two sub-regions of the pharynx that are shared between the digestive system and respiratory system are the oropharynx and the laryngopharynx.

Detailed explanation-4: -Regionally, the pharynx divides into three parts which are from superior to inferior:-the nasal pharynx, located behind the posterior nasal apertures (choanae), the oral pharynx, located behind the opening of the oral cavity, and the laryngeal pharynx, located behind the inlet (opening) of the larynx.

Detailed explanation-5: -Which is the second division, is the portion that is visible when looking into the mouth. The oropharynx is shared by the respiratory and digestive system and transports air, food, and fluids downward to the laryngopharynx.