What feature of a lung cell allows oxygen through quickly?

Answer 1

Inside your lungs are millions of tiny air sacs, called "alveoli" (singular = alveolus). These air sacs are where the oxygen for inhale diffuse into the nearby blood capillaries, and all the waste gases are diffused from these same capillaries into the air sacs to be exhaled.

The fact that these air sacs are so numerous (there's roughly 300-500 million) greatly increases the surface area, compared to having one large air sac that had the same volume as all the little air sacs combined. In fact, the combined surface area of all your alveoli is about the size of a tennis court - compare that to the size of your lung.

Answer 2

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, 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.

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.

The transdermal patch consists of an adhesive layer that attaches it to the skin, and a reservoir that holds the medicine. The medicine must first diffuse out of the reservoir and onto the skin, and then through the skin and into the bloodstream.

Answer 3

The alveoli in the lung cell have a thin membrane that allows for efficient exchange of gases, such as oxygen and carbon dioxide, through the process of diffusion. This thin membrane maximizes surface area for gas exchange, allowing oxygen to pass quickly into the bloodstream.

Answer 4

Their moist, thin, membranes allow gas to exchange between

the cells that make up their walls through the small space that lies between them.

Answer 5

erf

Answer 6

It is thin

Answer 7

k