The body absorbs medicine, it doesn't have to be directly applied to the infection for it to work.
Also, things such as cough sweets don't contain medicine, only things such as Mentho-Lyptus. The sweet is swallowed down the esophagus, but the vapours from it are inhaled down the Trachea to sooth the Bronchi (for Bronchitis).
Esophagus
Esophagus
The name of the tube that food goes down when you swallow is called your esophagus.
The muscles in the esophagus move the food down into the stomach.
When swallowed, food is referred to as a bolus. This is a mass of chewed food mixed with saliva that travels down the esophagus to the stomach for further digestion.
After chewing, the food is swallowed and passes down the esophagus. It travels through this muscular tube via a series of contractions called peristalsis. Eventually, the food reaches the stomach, where it undergoes further digestion.
The function of the esophagus is to move food from the mouth to te stomach. It is muscles that move the swallowed food slowly down and into your stomach
The tube through which food travels down is called the esophagus. It connects the throat (pharynx) to the stomach and is responsible for transporting food via a series of muscular contractions known as peristalsis. Once food is swallowed, it moves down the esophagus and enters the stomach for further digestion.
The trachea is a part of the respiratory system while the esophagus forms part of the digestive system. Since they belong to different systems, they perform separate functions. The trachea is larger and carries gasses in and out of the lungs. The esophagus is smaller and carries food from the mouth to the stomach.
Saliva is produced by the salivary glands in the mouth and is swallowed. It helps with digestion by moistening food and beginning the breakdown process with enzymes. After swallowing, saliva travels down the esophagus and into the stomach.
After a mouthful of food has been swallowed, it is called the bolus. The bolus travels down the esophagus through a process called peristalsis, which involves coordinated muscle contractions. Once it reaches the stomach, the food is mixed with gastric juices and further broken down for digestion.
the food goes through your esophagus and through your small & large intestines. there after, it breaks down to solids/liquids & all essentials and enters your digestive area