Blood cells in the human body have semipermeable membrane and depending upon concentration of solution inside blood cells and outside (in the blood), 'Lysis' (expansion of blood cells) and 'Crenation'

Question

Blood cells in the human body have semipermeable membrane and depending upon concentration of solution inside blood cells and outside (in the blood), 'Lysis' (expansion of blood cells) and 'Crenation' (contraction of blood cells) may occur. Kidneys are responsible for keeping solution inside blood cell and blood at same concentration. Identify the correct information(s).

Prashant Kotian · Accepted Answer

Correct answer: B,C,D. When placed in a hypertonic solution (higher concentration outside), exosmosis occurs, water leaves the cells, and they shrink (crenation). When placed in a hypotonic solution (lower concentration outside), endosmosis occurs, water enters the cells, and they swell and burst (lysis). In an isotonic solution, there is no net movement of water, so blood cells maintain their normal shape and do not undergo lysis. Therefore, correct answer is B,C,D.

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