What is the order of structures that oxygen passes through?
Air then travels down the pharynx and larynx, through the trachea, and into the lungs. In the lungs, air passes through the branching bronchi, reaching the respiratory bronchioles. The respiratory bronchioles open up into the alveolar ducts, alveolar sacs, and alveoli.
What is the pathway of oxygen to the lungs?
Respiratory System: Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
What are the different parts of the respiratory system and its function?
Pharynx (throat): Tube that delivers air from your mouth and nose to the trachea (windpipe). Trachea: Passage connecting your throat and lungs. Bronchial tubes: Tubes at the bottom of your windpipe that connect into each lung. Lungs: Two organs that remove oxygen from the air and pass it into your blood.
What is the respiratory system made up of?
What Are the Parts of the Respiratory System? The respiratory system includes the nose, mouth, throat, voice box, windpipe, and lungs.
How does the respiratory system protect itself from infection?
Cilia propel a liquid layer of mucus that covers the airways. The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.
Where are cilia located in the respiratory system?
Respiratory Zone: ↑ The portion of the respiratory tract where gas exchange occurs; found in the distal lung where alveoli are located. Cilia: ↑ Mobile, hair-like projections on the top part of cells lining the conducting zone airways; cilia move mucus along the mucociliary escalator.
How does respiratory system interact with immune system?
What role do the lungs play in the immune system? The lungs are lined with thin epithelial cells which allow for gas exchange and also secrete mucus into the alveoli. Mucus keeps the airways moist and traps unwanted particles that have been inhaled.
What system does the respiratory system provide oxygen to?
The respiratory system works with the circulatory system to provide this oxygen and to remove the waste products of metabolism. It also helps to regulate pH of the blood. Respiration is the sequence of events that results in the exchange of oxygen and carbon dioxide between the atmosphere and the body cells.
What other systems does the respiratory system connected to?
The respiratory system is mainly connected to 3 system: The circulatory system, the nervous system, and finally the exocrine system. Circulatory system: The respiratory system is mainly connected to the circulatory system in one way.
What immune cells are found in the lungs?
Immunological defence mechanisms of the lung are provided by several different types of immunocompetent cell. Among these, the most important are lymphocytes, alveolar macrophages and neutrophils. This review focuses mainly on the pattern of physiological activities of pulmonary lymphocytes in the local host defences.
What are the 8 organs of the immune system?
It is in these organs where the cells of the immune system do their actual job of fighting off germs and foreign substances.
- Bone marrow. Bone marrow is a sponge-like tissue found inside the bones.
- Thymus. The thymus is located behind the breastbone above the heart.
- Lymph nodes.
- Spleen.
- Tonsils.
- Mucous membranes.