We all know that in hyper tonic Sol. Blood cells shrink , but in 12th chemistry ncert it is still written that people eating salty food have swelling called edema.This is a big contrast as people increase conc. of solute in blood then why don't cells shrink instead of swelling? Hoping to get a reasonable answer. Please someone answer this.?

Question

Answer

Why Do People Eating Salty Food Have Swelling Called Edema?

Explanation:

Edema is the medical term used to describe swelling caused by excess fluid trapped in the body's tissues. It can occur in different parts of the body, such as the legs, ankles, feet, and hands. One of the common causes of edema is excessive intake of salt or sodium.

Hypertonic Solution and Cell Shrinkage:

When we consume a lot of salt or sodium, it increases the concentration of solutes in the blood. As a result, the blood becomes more hypertonic than the cells in our body. When a hypertonic solution comes in contact with the cells, it causes them to lose water and shrink. This is because water moves from an area of low solute concentration (inside the cell) to an area of high solute concentration (outside the cell) through a process called osmosis.

Edema and Sodium Intake:

However, the effect of excess sodium intake on edema is a bit more complicated than this. When we consume a lot of salt or sodium, it increases the concentration of solutes in the blood. This, in turn, increases the volume of blood in the body, as water is drawn from the surrounding tissues to dilute the extra solutes in the blood. This causes an increase in blood pressure and fluid buildup in the tissues, leading to edema.

Additionally, excess sodium intake can also affect the way our kidneys function. The kidneys are responsible for regulating the balance of fluids and electrolytes in the body. When sodium intake is high, the kidneys may not be able to eliminate the excess sodium efficiently, leading to more fluid retention and edema.

Conclusion:

In conclusion, while it is true that in hypertonic solutions, cells shrink due to the movement of water out of the cells, excess sodium intake can cause edema due to the effect it has on the body's fluid balance and kidney function. It is essential to maintain a healthy balance of sodium in the diet to prevent the harmful effects of edema.

Answer

There is actually no contradiction here.

Edema is not swelling of RBC but of soft tissue mostly observed in hands or feet.

For people who eat high quantity of salty food the concentration of salt increases in the blood plasma. Now the fluid outside the RBC becomes hypertonic which results in plasmolysis of RBC.
The fluids in RBC are released into the blood which gets accumulated in the intercellular spaces between the tissue which is mainly responsible for swelling of a particular organ.

And yes the RBC does shrink in the process but I hope it is clear that swelling that occurs due to edema is not with reference to RBC.

Similar Class 12 Doubts

and yes shruti u have to argue for urself u have written mr shukla instead of miss shukla so first correct ur self then argue with other for correction in their spelling and it's ur mistake not of keypad

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture ?

Specific resistance of a conductor increases with

When the price of a radio was reduced by 20%, its sale increased by 80%. What was the net effect on the sale ?

An automobile manufacturer earns 35% profit by selling each car for Rs 452000. If the production cost is increased by 20%, what should be the new selling price of a car so as to get a profit of 20%? Rs 334814.8 R * s! 526423.8 Rs 401778.0 Rs 482133.6 A ?

Top Courses for Class 12

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams