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Describe the exchange of substances across the capillary cell membrane?
Wiki User
∙ 14y ago
Capillary exchange... You have a higher blood pressure and a lower osmotic pressure at the arteriole end of the capillary, this causes water to leave the capillary. The gases oxygen and carbon dioxide and nutrients like glucose and amino acids follow their concentration gradients and diffuse across the capillary membrane. At the venule end of a capillary your blood pressure is less than that of osmotic pressure and water returns to the capillary.
Hope this helped. I'm Looking for diagrams of this same thing. Any ideas?
Here is a website I found that might help out too.
http://www.mhhe.com/biosci/esp/2002_general/Esp/folder_structure/tr/m3/s10/trm3s10_2.htm
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThey exchange substances across the membrane, either by simple diffusion or osmosis, or by active transport systems.
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How does endothelial cells are adapted to carry out their function?
Basically they have a thin cell membrane to allow the substances to travel from the capillary to the surrounding cells easier.
Describe the structure of respiratory membrane?
there is a aveolar wall, capillary wall, sqamous epithelium tissue, and blood inside the walls.
Gas exchange occurs at the respiratory membrane between the?
The membrane of the alveolus, the air sacs in the lungs where this process takes place, is only one cell thick. The wall of the capillary running adjacent to the alveolus is also one cell thick, so the gases are exchanged between the alveolus and the capillary cell membranes.
What cell is the Cell Membrane in?
The respiratory membrane consists of the epithelial cells of the alveolus, the endothelial cells of the capillary, and the two fused basement membranes of these layers.Gas exchange occurs across this respiratory membrane.
What term describes a cell membrane's ability to let substances through?
Permeable desrcibes allowing substances through. Permeability would describe the ability to let substances through. Cell membranes can be selectively permeable or semi - permeable.
What is exchange between plasma and interstitial fluid compartments that takes place across the capillary membrane?
gas exchange
What does the alveoi do?
They are especially significant in the gas (air) exchange through to the pulmonary alveolar-capillary membrane.
How does endothelial cells are adapted to carry out their function?
Basically they have a thin cell membrane to allow the substances to travel from the capillary to the surrounding cells easier.
Describe the structure of respiratory membrane?
there is a aveolar wall, capillary wall, sqamous epithelium tissue, and blood inside the walls.
How is the anatomy of capillaries and capillary beds well suited for their function?
The capillaries have the thinnest walls of any of the blood vessels. The capillary wall is made up of a single layer of endothelium lying on a delicate basement membrane. The thin capillary wall enables water and dissolved substances, including oxygen, to diffuse from the blood into the tissue spaces, where they become available for use by the cells. The capillary also allows waste from the metabolizing cell to diffuse from the tissue spaces into the capillaries for transport by the blood to the organs of excretion. The capillaries are called exchange vessels because they allow for an exchange of nutrients and waste.
What is the ac membrane?
alveolar capillary
Gas exchange occurs at the respiratory membrane between the?
The membrane of the alveolus, the air sacs in the lungs where this process takes place, is only one cell thick. The wall of the capillary running adjacent to the alveolus is also one cell thick, so the gases are exchanged between the alveolus and the capillary cell membranes.
What cell is the Cell Membrane in?
The respiratory membrane consists of the epithelial cells of the alveolus, the endothelial cells of the capillary, and the two fused basement membranes of these layers.Gas exchange occurs across this respiratory membrane.
What is different about the capillary exchanges seen in a capillary with fenestrations and intercellular clefts and the exchanges seen in a capillary lacking those modifications?
Capillaries with fenestrations and intercellular clefts allow for different diffusion of substances depending on structural characteristics (and permeability) of the capillary. Fenestrated capillaries are found where absorption are a priority, such as the intestines or endocrine glands, or where filtration occurs, such as the kidneys. A fenestra is an oval pore covered (usually) by a delicate membrane, and is much more permeable than a plain plasma membrane. Intercellular clefts are gaps in the plasma membrane, or areas not joined tightly, and are another way substances can enter the cell. Almost all capillaries have these. Substances can diffuse directly through the plasma membranes of cells only if the substances are lipid-soluble (like the respiratory gases), and certain lipid-insoluble substances can enter or leave the blood by passing through the plasma membranes of endothelial cells within vesicles, by endo or exocytosis.
What do the cell membrane do for the animal cell and the plant cell?
cell membranes control the exchange of substances between a cell and its environment.
What substance can pass through a capillary membrane?
plasma protein
Does the gas exchange function of the respiratory system occur in the alveoli?
Yes gas is transferred through the alveolar/capillary membrane in the alveolus. Gas moves from the alveolar air sacs to the pulmonary capillaries.
