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The dependence of life processes on diffusion mechanisms could not be more prevalent. Diffusion occurs throughout the human body, and without it, cells and body tissue could not get important nutrients for survival, the eyes would dry out, and many medicines could not be absorbed into the body.
The digestion of food in the stomach is only the first step in delivering important nutrients to living cells, which need energy to operate and nutrients to build more cells. The main system of transporting nutrients to the body's cells is through the blood stream. But once a nutrient arrives at a needy cell, it is still inside a blood vessel while the cell lies outside. The lack of nutrients inside the cell, and between the cell and the blood vessel, creates a concentration gradient between the blood vessel and the cell. Due to the lower concentration in the cell, the nutrient diffuses through the blood vessel wall and into the cell.
Every organ in the body needs oxygen in order to survive, and the eyes are no different. However, the eyes lack a great number of blood vessels (which carry oxygen that diffuses into cells by the process above), and must have an extra supply of oxygen. The atmosphere provides the extra needed oxygen, which is consumed by the eye by the diffusion of oxygen through the cornea, the hard outer covering on the eye. In places with a very dirty atmosphere, oxygen concentration may be low, and the eye can dry out. You may have noticed this if you have ever been in a dust storm or had smoke from a fire blowing into your eyes.
From severe illness to a common headache, medicines are universally used to alleviate pain or cure sickness around the world. For medicines taken orally as pills, the medicine must somehow find its way into the bloodstream. Once in the stomach, if the pill capsule is a time release mechanism, the medicine must first diffuse out of the capsule. Once in the stomach, the medicine from the pill is absorbed into the lining of the stomach and then into the bloodstream, both processes of diffusion. For some medicines, the capsule cannot provide enough long term dosage, or the medicine does not last long enough because it is absorbed too quickly. Another possibility is the IV, but for most people, the IV is not quite a feasible day-to-day method of medicine intake. A solution to this problem, one that has seen increasing use over the past few years is the transdermal patch.
What else can I help you with?
Diffusion of AIDS is an example of which type of diffusion?
Diffusion of AIDS is an example of contagious diffusion, where the disease spreads through direct or indirect contact between individuals.
If a chemist wants to study dissfusion should a semipermeable membrane be used?
Diffusion is essentially the movement of solute molecules from a region of higher concentration to a region of lower concentration. A semi permeable membrane need not be used to study this phenomenon
Is simple diffusion the net diffusion of a solvent?
no
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
Who discovered diffusion and how?
Diffusion is known from immemorial times; laws for diffusion were elaborated by Adolf Eugen Fick.
When was Society for the Diffusion of Useful Knowledge created?
Society for the Diffusion of Useful Knowledge was created in 1826.
When was Boston Society for the Diffusion of Useful Knowledge created?
Boston Society for the Diffusion of Useful Knowledge was created in 1829.
How do cells take in useful gases?
Diffusion.
How is diffusion useful for aquatic plants and animals?
la la la
How osmosis is useful in proper functioning of body?
The diffusion of water through the cell'smembrane is called osmosis (ahs MOH sis). A special kind of diffusion
Why is diffusion necessary to be preformed for an organism to survive?
Diffusion is how gas exchange happens in the lungs, so it is useful for respiration. Food susbstances also diffuse out of the small intestine once they have been digested, so it's useful for that as well.
What are the types of cultural diffusion?
contagious diffusion, relocation diffusion, expansion diffusion, stimulus diffusion, hierarchical diffusion.
The spreading out of a substance from an area of high concentration to an area of low concentration is called .?
diffusion
How does the cell membrane know when to transport water and materials into and out of the cell?
It doesn't! it just lets some materials that are useful for the cells into the membrane and others out, through diffusion.
What are tiny blood vessel with very tiny walls that are the site of the exchange of useful and waste products?
Capillaries are the tiny, thin-walled blood vessels that are the site of the exchange of useful products and waste products. They allow diffusion of these materials across their thin walls.
What are the 3 types of diffusion?
simple diffusion, osmosis and facilitated diffusion.
What is the difference between diffusion and facilitate diffusion?
The difference between diffusion and facilitated diffusion is that facilitated diffusion is that the molecules pass through special protein channels.
