Final answer:
A nasal cannula is a device used to administer oxygen to a patient. It delivers a constant flow of oxygen through two prongs that are inserted into the patient's nostrils.
Step-by-step explanation:
A nasal cannula is a device used to administer oxygen to a patient. It is a flexible tube that has two prongs that are inserted into the patient's nostrils. The other end of the tube is connected to an oxygen supply.
The nasal cannula delivers a constant flow of oxygen to the patient, helping to increase the amount of oxygen in their blood. It is commonly used in medical settings, such as hospitals and nursing homes, to provide supplemental oxygen to patients with respiratory conditions or who are experiencing difficulty breathing.