Identify the parts of the AMBU bag in the diagram below:

• 1 - Self-inflating bag
• 2 - Face mask
• 3 - Pop valve
• 4 - Oxygen inlet
• 5 - Reservoir bag

Rationale / Explanation:

• Self-inflating bag (1): The central blue part of the AMBU device, designed to re-expand automatically after compression. This is the core functional component used for manual ventilation.
• Face mask (2): The transparent part at the end of the bag (left side) that interfaces with the patient’s nose and mouth to deliver ventilation.
• Pop valve (3) Also known as a pressure relief valve or safety valve, it prevents overinflation of the patient’s lungs by limiting pressure. It is placed just before the face mask.
• Oxygen inlet (4): The green tubing connects here to allow oxygen from an external source to enter the AMBU bag. Located near the rear.
• Reservoir bag (5): Attached at the back to hold additional oxygen, allowing for high-concentration oxygen delivery when needed.