When a cell sits in a hypertonic solution, water:

1. Hyper means the extracellular fluid has a higher osmolarity than the cytoplasm. 2. Higher osmolarity outside means the fluid contains less water than the cell does. 3. Because the cell has a relatively higher concentration of water, water will leave the cell. 4. That is the opposite of what happens in a hypotonic solution. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 5 'Structure and Function of Plasma Membranes', sections 5.1-5.4_