What is extracellular tonicity?

What is extracellular tonicity?

Tonicity describes how an extracellular solution can change the volume of a cell by affecting osmosis. A solution with low osmolarity has a greater number of water molecules relative to the number of solute particles; a solution with high osmolarity has fewer water molecules with respect to solute particles.

What is tonicity in chemistry?

Tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a semipermeable cell membrane. It is commonly used when describing the swelling versus shrinking response of cells immersed in an external solution.

Is extracellular fluid hypotonic or hypertonic?

In a hypotonic solution, the extracellular fluid has a lower osmolarity than the fluid inside the cell; water enters the cell. In a hypertonic solution, the extracellular fluid has a higher osmolarity than the fluid inside the cell; water leaves the cell.

What does hypertonic extracellular mean?

Hypertonicity denotes a relative excess of the solute with extracellular distribution over body water regardless of whether body water is normal, reduced, or excessive. The gain of extracellular solutes leads to the osmotic exit of water from the intracellular compartment to dilute the extracellular solutes.

What is tonicity in biology quizlet?

Tonicity. A description of the relative solute concentration in a solution as compared to another solution. Equilibrium. The condition that exists in system when there is a relatively equal distribution of a particular molecule. Hypertonic.

What is the tonicity of a solution?

“Tonicity is the ability of a solution to affect the fluid volume and pressure in a cell. If a solute cannot pass through a plasma membrane, but remains more concentrated on one side of the membrane than on the other, it causes osmosis.”

What is tonicity explain?

The ability of an extracellular solution to make water move into or out of a cell by osmosis is known as its tonicity. Tonicity is a bit different from osmolarity because it takes into account both relative solute concentrations and the cell membrane’s permeability to those solutes.

What is tonicity in science?

Tonicity is defined as the ability of a solution surrounding a cell to cause that cell to gain or lose water (Urry et al., 2017). While osmolarity is an absolute quantity, tonicity is relative. If two solutions have the same concentration of nonpenetrating solutes, they are considered isotonic.

What is meant by tonicity of a solution?

What does high tonicity mean?

Tonicity is the concentration of a solution as compared to another solution. If a solution has a higher concentration of solutes (less water) than another it is said to be hypertonic. A hypotonic solution has a lower concentration of solutes and more water than another solution.

What is tonicity in diffusion?