Why is the term Roger Wilco considered by some to be an incorrect phrase - trivia question /questions answer / answers
Aerophones; any class of musical instruments in which a vibrating mass of air produces the initial sound including bull roarers and sirens. They are found in many countries throughout Africa and are normally incorporated with dancing, the musicians having to synchronize their footwork along with playing their notes!
Save. An Ambu bag is a medical device used to provide assisted ventilation to people who are either not breathing or are having trouble breathing. The bag needs to be compressed to force a volume of air into the lungs. Ambu is a registered trademark name for a major manufacturer of the device.n Ambu bag is needed when a person goes into respiratory failure, which means he stops breathing. This can occur for a variety of reasons, such as a drug overdose, a severe asthma attack, a head injury or near drowning.