Choana
Choana: An opening at the back of the nasal passage (there is a left and a right side) that empties into the space behind the nose called the nasopharynx, where the adenoids and eustachian tube are. The passage way continues down into the back of the mouth and into the throat.
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- Choanal
Choanal: Pertaining to the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like the opening of a train tunnel in a mountain which then opens into the space called the nasopharynx. The choanae must be open to permit breathing through the nose. Choanal atresia […]
- Choanal atresia
Choanal atresia: Blockage of the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like an inverted funnel which opens into the upper throat. There are two choanae. The choanae must be open to permit breathing through the nose. Choanal atresia can occur as an […]
- Choanal stenosis
Choanal stenosis: Abnormal narrowing of the choana, the passageway from the back of one side of the nose to the throat. The choana is shaped like the opening of a train tunnel in a mountain which then opens into the space called the nasopharynx. There are two choanae. The choanae must be open to permit […]
- Chocolate
Chocolate: A food or flavoring made from the seeds of the cacao or chocolate tree. Chocolate (especially dark chocolate) is rich in flavonoids, compounds that act as antioxidants. Flavonoids may also lower blood pressure and improve blood flow, by regulating the synthesis of nitric oxide, which dilates blood vessels. Flavonoids, like aspirin, help keep platelets […]
- Choking (object in airway)
Choking (object in airway): Partial or complete obstruction of the airway can be due to a foreign body (e.g., food, a bead, toy, etc.) The onset of respiratory distress may be sudden with cough. There is often agitation in the early stage of airway obstruction. The signs of respiratory distress include labored, ineffective breathing until […]