Tissues in the lungs
The lungs are made up of many types of tissue; the cartilages, ciliated epithelium, smooth muscle, squamous epithelium, elastic fibres and goblet cells and glandular tissue.
The cartilage is a very stiff and flexible tissue, which doesn’t contain air vessels. It is found in trachea, bronchus, bronchiole and alveolus, and it has a structural role. It support, and gives strength to trachea and bronchi. It holds the airways open for the resistance with little airway. This prevents it from collapse during inhalation when the air pressure in low. It does not form a complete ring so it is flexibility, and it allows you to move your neck without breaking it, or damage the airway.
The ciliated epithelium is a category of epithelium. This epithelium consists of ciliated cells. They are found in trachea, bronchus and bronchiole. They are for protection and secretion. The cells have millions of tiny hair-like structures on its surface, which is called cilia. It is in the airways, and the hairs moves back and forth to get the particles out of the body, and keeps the dust and debris out of the lungs. The cilia are able to move the mucus up the airways towards the throat, so it can be swallowed.
Smooth muscle is non-striated muscle, made up of thin muscle cells. It is found in trachea, bronchus and bronchiole. They can contract, and when they do; it will tighten the airway, and it makes the lumen of the airway narrower. The flow of air to and from the alveoli can restrict if the lumen gets tighten up. They control slow movements in the walls of instines and the stomach.
Elastic fibres are found in trachea, bronchus and bronchiole. It gets formed in the loose tissue when the airway tightens, as the smooth muscle contracts. When the smooth muscle relaxes, the elastic fibres go back to their normal shape and size. When you are breathing in and fill the lungs, the elastic fibres stretch. They recoil when you are breathing out, to help and force air out of the lungs.
The cartilage is a very stiff and flexible tissue, which doesn’t contain air vessels. It is found in trachea, bronchus, bronchiole and alveolus, and it has a structural role. It support, and gives strength to trachea and bronchi. It holds the airways open for the resistance with little airway. This prevents it from collapse during inhalation when the air pressure in low. It does not form a complete ring so it is flexibility, and it allows you to move your neck without breaking it, or damage the airway.
The ciliated epithelium is a category of epithelium. This epithelium consists of ciliated cells. They are found in trachea, bronchus and bronchiole. They are for protection and secretion. The cells have millions of tiny hair-like structures on its surface, which is called cilia. It is in the airways, and the hairs moves back and forth to get the particles out of the body, and keeps the dust and debris out of the lungs. The cilia are able to move the mucus up the airways towards the throat, so it can be swallowed.
Smooth muscle is non-striated muscle, made up of thin muscle cells. It is found in trachea, bronchus and bronchiole. They can contract, and when they do; it will tighten the airway, and it makes the lumen of the airway narrower. The flow of air to and from the alveoli can restrict if the lumen gets tighten up. They control slow movements in the walls of instines and the stomach.
Elastic fibres are found in trachea, bronchus and bronchiole. It gets formed in the loose tissue when the airway tightens, as the smooth muscle contracts. When the smooth muscle relaxes, the elastic fibres go back to their normal shape and size. When you are breathing in and fill the lungs, the elastic fibres stretch. They recoil when you are breathing out, to help and force air out of the lungs.