The cells of the human body require a constant stream of oxygen to stay alive. There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The nose is a structure of the face made of cartilage, bone, muscle, and skin that supports and protects the anterior portion of the nasal cavity. The nasal cavity is a hollow space within the nose and skull that is lined with hairs and mucus membrane.
Your Lungs & Respiratory System
Organs and Structures of the Respiratory System | Anatomy and Physiology II
The lungs are divided into different parts which are called lobes. The right lung has three lobes called upper, middle and lower lobes. The left lung only has two lobes, the upper and lower. The lungs are found in the chest on the right and left side. At the front they extend from just above the collarbone clavicle at the top of the chest to about the sixth rib down.
Lungs: Facts, Function and Diseases
Content: The respiratory system is one of many working systems in the human body and is composed of various parts and organs, each with its own function. Instructional Objective: Given an unlabeled diagram of the respiratory system, the student will:. Label parts of the human respiratory system to include the trachea, bronchi, lungs, thoracic cavity, and diaphragm. Explain the function of the diaphragm in respiration in a paragraph of no less than 4 complete sentences to include the terms "expand", "contract", "inhale", and "exhale" as they relate to the diaphragm and the lungs during respiration. Prerequisite: Students should be able to explain that the human body contains many "systems" that carry out unique functions necessary to sustain life, that the respiratory system is one of them, and that its function is that of breathing.
In humans, the respiratory tract is the part of the anatomy of the respiratory system involved with the process of respiration. The respiratory tract is lined with respiratory mucosa or respiratory epithelium. In the nasal cavity , a layer of nasal mucosa acts as a filter and traps pollutants and other harmful substances found in the air. Next, air moves into the pharynx , a passage that contains the intersection between the oesophagus and the larynx. The opening of the larynx has a special flap of cartilage, the epiglottis , that opens to allow air to pass through but closes to prevent food from moving into the airway.