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What is intra-alveolar surface tension due to?
Intra-alveolar surface tension is due to the presence of surfactant molecules that reduce surface tension within the alveoli, preventing lung collapse by maintaining alveolar stability during breathing. Surfactant helps to reduce the work of breathing and facilitates gas exchange by preventing alveolar collapse at the end of expiration.
Are there cilia at the apical surface?
Yes, cilia are present on the apical surface of some cells. They serve various functions, such as moving substances along the cell surface or sensing the environment.
How does a paramcium move?
by moving its cilia, with which its surface is covered
What are Short hairlike structures that protrude from the surface of a cell and are packed in tight rows called?
Cilia.
What causes intra alveolar-surface tension?
Intra-alveolar surface tension is caused by the presence of fluid lining the alveoli, mainly composed of surfactant molecules. Surfactant helps reduce surface tension by lowering the cohesive forces between water molecules, preventing alveolar collapse during exhalation and allowing for efficient gas exchange in the lungs.
What keeps the surface between the air and the alveolar cells moist in the lung?
alveolar fluid
What is intra-alveolar surface tension due to?
Intra-alveolar surface tension is due to the presence of surfactant molecules that reduce surface tension within the alveoli, preventing lung collapse by maintaining alveolar stability during breathing. Surfactant helps to reduce the work of breathing and facilitates gas exchange by preventing alveolar collapse at the end of expiration.
What are Hair like structures that move materials along the outer surface of the cell?
Cilia and flagella are hair-like structures that protrude from the surface of cells and are involved in movement. They can help propel cells or move substances across the cell surface.
What percentage of the alveolar surface is covered with pulmonary capillaries?
99%
What are short hairlike projections on a cell surface?
Short hairlike projections on a cell surface are called cilia. Cilia are specialized structures that act like tiny antennas, helping cells to sense their surroundings and move substances across the cell surface.
Are there cilia at the apical surface?
Yes, cilia are present on the apical surface of some cells. They serve various functions, such as moving substances along the cell surface or sensing the environment.
What is the loss of alveolar surface area called?
The loss of alveolar surface area is referred to as "alveolar destruction" or "alveolar collapse." This condition can occur in various respiratory diseases, such as emphysema, where the walls of the alveoli are damaged, leading to a reduction in gas exchange efficiency. This loss impairs oxygen uptake and carbon dioxide removal, contributing to respiratory complications.
What is the total alveolar surface area in the lungs of human beings?
100m2
What are short hairlike projections used for locomotion called?
Short hairlike projections that are used for locomotion are called cilia. Cilia are normally found on unicellular organisms and not multicellular organisms.
What are cilia and flagella?
Cilia and flagella are hair-like structures found on the surface of some cells. They help with movement and can either propel the cell through its environment (flagella) or move substances along the cell surface (cilia).
How does a paramcium move?
by moving its cilia, with which its surface is covered
What are Short hairlike structures that protrude from the surface of a cell and are packed in tight rows called?
Cilia.
