Which Is the Most Likely Cause of Wrinkles in the Skin

question 32

Multiple Choice

Which is the most likely cause of wrinkles in the skin of older adults?

• A) Decreased collagen and subcutaneous fat
• B) Atrophy of sweat glands
• C) Decline in fibroblast proliferation
• D) Decreased vascularity

---

Definitions:

Cell

The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.

Turgor Pressure

The pressure of water pushing the plasma membrane against the cell wall of a plant or bacterium, providing rigidity to the cell.

Hypertonic

A solution that has a higher solute concentration than the cytoplasm of a cell, causing cell shrinkage.

Hypotonic

Describes a solution that has a lower concentration of solutes relative to the inside of a cell, causing water to enter the cell by osmosis.