Why do human skin cells shrink when placed in salt solution and frog skin cell swell?

Water molecules move from a place where it is hypotonic( high water molecule content but low salt content) to a hypertonic solution( low water content but high salt content). This makes sense because water molecules want to expand to where it has more room. Human skill cells have a high water content, so water leaves the cells and towards the salt solution(low in water content). However, frog skin cells have less water concentration than the salt solution. Therefore, water from the salt soltuion enters the frog skin cells(where it has more room).

Why do human skin cells shrink when placed in salt solution and frog skin cell swell?
human cells shrink when placed in salt solution because human cells are hypotonic means(more water and less salt concentration) to that of salt solution which is hypertonic means(less water more salt concentration. water tend to move from hypotonic to hypertonic.





in contrast, frog's skin cells swell because frog's cells are hypertonic to that of salt solution. Which means that the frog's cells are more salt concentrated.





remember that water moves from less concentrated (more water less salt) to a high concentrated solution (less water more salt).
Reply:it depends on the semipermeable capabilities of the skin cells. depending on the concentrations of salt in the skin cells and out, osmosis will occur in either direction.