1 If the device has the Google Apps Device Policy app installed, you can sign in to your My Devices page. Your Google Apps administrator doesn't have access to your My Devices page.  If you donât have the Google Apps Device Policy app installed, you manage your device using the Android Device Manager.
The trachealis muscle is a smooth muscle that bridges the gap between the free ends of C-shaped cartilages at the posterior border of the trachea, adjacent to the esophagus. The primary function of the trachealis muscle is to constrict the trachea, allowing air to be expelled with more force e.g. during coughing.
This leaves a membranous wall at the back, without cartilage. The trachealis muscle connects the ends of the incomplete rings and contracts during coughing, reducing the size of the lumen of the trachea to increase the rate of air flow. The esophagus lies posteriorly to the trachea.