• Cylinder Tank: Stores compressed oxygen gas under high pressure.
• Pressure Gauge: Shows how much oxygen remains inside the tank.
• Flow Meter / Regulator: Controls and measures the flow of oxygen in liters per minute (LPM).
• Humidifier Bottle: Moistens the dry oxygen gas before it reaches the patient (filled with distilled or filtered water).
• Nasal Cannula or Mask: Delivers the oxygen directly to the patient's nose or mouth.