What two factors determine lung compliance?
Two important factors of lung compliance are elastic fibers and surface tension. More elastic fibers in the tissue lead to ease in expandability and, therefore, compliance. Surface tension within the alveoli is decreased by the production of surfactant to prevent collapse.
What are 2 adaptations of the lungs?
Adaptations of the alveoli:
Moist walls – gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls – allow gases to pass through. Extensive blood supply – ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
What are the characteristics of the lungs?
In humans each lung is encased in a thin membranous sac called the pleura, and each is connected with the trachea (windpipe) by its main bronchus (large air passageway) and with the heart by the pulmonary arteries. The lungs are soft, light, spongy, elastic organs that normally, after birth, always contain some air.
How any two features of the human lung make it an efficient respiratory surface?
Human lungs are efficient respiratory surfaces because of the thin and large surface for easy diffusion, moist air sacs with mucus for dissolving the gases. In addition, the air sacs are surrounded by a network of blood capillaries with a good supply of blood so that more exchange of gases can happen.
What determines lung compliance quizlet?
What determines lung compliance? It is determined by destinsibility of the lung tissue and aveolar surface tension.
What does compliance measure in terms of lung function quizlet?
It measures how well the lung can expand and return to shape. What does compliance measure in terms of lung function? As the lungs expand, the pressure within the lung decreases, so air moves in until the pressure inside the lung is equal to the pressure outside the body.
What are the three characteristics of respiratory surface?
A good respiratory surface should have a high surface area, moist and thin walls and in contact with many blood capillaries to allow easy exchange of gases or diffusion.
What are the 4 characteristics of a respiratory surface?
Four characteristics of an efficient respiratory surface are: thin epithelium, large surface area, abundant capillaries, ventilation mechanism.
What are the three characteristics of lungs which make it an efficient respiratory surface?
Three Characteristics Of Lungs Which Make Them An Efficient Respiratory Surface Are:They Have A Rich Blood Supply. Their Inner Surface Is Moist. They Have Large Combined Surface Area.
Which characteristic feature of lungs ensures efficient exchange of gases?
Rich in capillary supply: The alveoli are richly supplied with the capillaries that bring blood with the carbon dioxide and absorbs oxygen.
Which of the following determines lung compliance?
What is lung compliance quizlet?
What is lung compliance? A measure of how easily the lung can be stretched out or inflated. Therefore, compliance is similar to distensibility.
What is normal compliance of the lung?
Normally the total compliance of both lungs in an adult is about 200 ml/ cm H2O.
Which statement lists all of the components of the respiratory membrane quizlet?
Which statement lists all of the components of the respiratory membrane? The respiratory membrane is composed of the thin layer of water with surfactant in the alveoli, the single squamous cell alveolar wall, and the single cell capillary wall.
What is the key characteristic of a respiratory surface?
A respiratory surface is covered with thin, moist epithelial cells that allow oxygen and carbon dioxide to exchange. Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
What structural characteristics are common to the respiratory surfaces of organisms?
The three characteristics of a typical respiratory surface are: The surface needs to be thin and moist (actually two characteristics). Thin walls and moisture allow for oxygen and carbon dioxide to diffuse easily through the tissue surface. In humans, alveolar membranes are much thinner than a millimeter in thickness.
What are characteristics of respiration?
Characteristics of Normal Respiration
Normal respiration results in deep and even movement in the chest. The depth of respirations refers to the amount of air inhaled and exhaled with each breath. If respirations are shallow, the rib cage does not expand to its normal size.
What are characteristics of respiratory structures?
Respiratory structures typically have an attenuated shape and a semipermeable surface that is large in relation to the volume of the structure. Within them there is usually a circulation of body fluids (blood through the lungs, for example).
Which of the following is a characteristic of respiratory organ?
All respiratory organs have large surface area to get enough oxygen or help with the exchange of gasses. They are thin-walled for easy diffusion of gases and substances. They have rich supply of blood or the conducting fluid present in the body for transporting respiratory gases to the tissues of the body.
What are the 4 characteristics of a good gas exchange surface?
Features of Gas Exchange Surfaces
Large surface area to allow faster diffusion of gases across the surface. Thin walls to ensure diffusion distances remain short. Good ventilation with air so that diffusion gradients can be maintained. Good blood supply to maintain a high concentration gradient so diffusion occurs …
What are the character characteristic feature of alveoli?
Each alveolus is cup-shaped with very thin walls. It’s surrounded by networks of blood vessels called capillaries that also have thin walls. The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood.
What are the types of lung compliance?
There are two types of compliance: dynamic and static.
- Dynamic compliance describes the compliance measured during breathing, which involves a combination of lung compliance and airway resistance.
- Static compliance describes pulmonary compliance when there is no airflow, like an inspiratory pause.
Which of the following factors influence compliance of the lungs?
Two factors determine lung compliance: elasticity of the lung tissue and surface tensions at air water interfaces.
What primarily affects compliance in the lungs quizlet?
Surfactant increases lung compliance by reducing the cohesive forces between water molecules on the alveolar surface, which lowers the surface tension. Surfactant stabilizes alveoli of different sizes by altering surface tension, depending on the surface area of the alveolus.
How do you find lung compliance?
Lung compliance can be calculated by dividing volume by pressure (C = V/P). Two factors affecting lung compliance are elasticity from the elastin in connective tissue, and surface tension which is decreased by surfactant production.