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
The Body Shop much public and media interest. The Body Shop regularly featured posters on shop windows and sponsorship of local charity and community events. Over time, Roddick blossomed into a full-time critic of business in general and the cosmetic industry in particular, criticising what she considered the environmental insensitivity of the industry and traditional views of beauty, and aimed to change standard corporate practices Roddick said: "For me, campaigning and good business is also about putting forward solutions, not just opposing destructive practices or human rights abuses". In 1997, Roddick launched a global campaign to raise self-esteem in women and against the