Respiratory Systems And The Respiratory System Essay

765 Words Jul 21st, 2015 4 Pages
The human respiratory system is responsible for delivering air to the lungs, bringing oxygen into the body, and expelling the carbon dioxide back into the air. The respiratory system is a very important system in the human body and is very essential for humans to live. This paper will include the location and functions of the respiratory system, as well has analysing the mechanism of the breathing and the diseases and disorders that can affect the respiratory system. Figure 1 shows the location of the respiratory structures in the human body.
Figure 1: The respiratory structures in the body

Air enters through the nose into the nasal cavity, the cavity is lined with pseudostratified ciliated columnar epithelial tissue, warming and moistening air. Small hairs, called cilia, filter the air by trapping harmful particles. The nasal cavity connects to the pharynx. The pharynx is a funnel-shaped tube providing a passageway for the air to travel through towards the trachea. The larynx (voice box) is composed mostly of hyaline cartilage. The larynx serves as an open airway, routes food and air into the proper passageways and produces sound. Inhaled air passes through the larynx, from the pharynx, leading into the trachea. The trachea (windpipe), is approximately 5 inches long and is the main air passage. It is made up of around 16 to 20 C-shaped rings of hyaline cartilage, that provided the support and structure. The wall of the trachea are lined with cilia, again…

Related Documents