Trachea are generally highly elastic but they may calcify with age. 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, adjoining along the tracheoesophageal stripe. Circular horizontal bands of fibrous tissue called the annular ligaments of trachea join the tracheal rings together. The cartilaginous rings are incomplete to allow the trachea to collapse slightly so that food can pass down the esophagus. A flap-like epiglottis closes the opening to the larynx during swallowing
What Love Is Made Of performed "What Love Is Made Of". She also performed it during her headline set at the Yahoo! Wireless Festival 2013. What Love Is Made Of "What Love Is Made Of" is a song recorded by British recording artist Katy B. Written by Katy alongside Goldon Warren, who also produced it under the name Geeneus, the track was released as a standalone single via digital retailers on 8 July 2013 by Rinse and Columbia Records. It was composed after Katy had been listening to dance genres. The theme conveyed in the lyrics is love while musically, the song has been described