List the Structures & Functions of Respiratory Organs
The primary function of the respiratory system is gas exchange with different parts of the body. This effect is achieved through the respiratory organs.
The respiratory system consists of lungs and respiratory tract (nose, pharynxes, larynx, trachea, bronchi). Respiratory tract starts with the nasal cavity, which is divided to the left and right parts. Nose is an organ through which air is exhaled and inhaled. Nostrils make it easy to exhalation and inhalation. People inhale air into the lungs through the pharynxes. There are three parts of the pharynxes. Nasopharynx connects the nasal cavity with the upper part of the throat. Oropharynx is situated between the upper part of the epiglottis and the soft palate. Laryngopharynx: is located below the epiglottis. It opens into the larynx and esophagus. Epiglottis prevents water or food entering to the trachea during swallowing. Larynx connects the laryngopharynx with trachea. The larynx is composed of cartilages. The trachea stretches from larynx to bronchi. Trachea is in front of the esophagus, a tubular shape with a diameter of 1 inch and a length of 4.25 inches. The bronchi is air flow to the lungs. Right bronchus is longer than the left. The right is divided into three equity bronchi. Left bronchus is divided into two partial bronchi. Lungs are conical bodies and are pleural hollow. The lungs serve an excretory function in that they give off carbon dioxide and water vapor during exhalation (Scott, Fong, 2003). The lungs work closely with the heart to bring oxygen to the body (Caster, 2010). The left lung consists of 2 parts, and the right lung is divided of 3.
For optimal function, the design of a respiratory organ must allow the transfer of oxygen with minimal utilization by the organ itself (Maina, 2002). Respiratory organs provide volatile substances such as alcohol, water vapor, ammonia. Also, through the lungs various volatile agents and gases can be absorbed into the bloodstream. Water balance is maintained through the work of the lungs. Each person has a voice through the respiratory function.