Final answer:
The olfactory epithelium contains basal cells that provide replacement cells for damaged olfactory receptor neurons. Basal cells are stem cells that have the ability to differentiate into various cell types, including olfactory receptor neurons.
Step-by-step explanation:
The olfactory epithelium contains cells called olfactory receptor neurons that are responsible for the sense of smell. The olfactory receptor neurons detect odorant molecules inhaled through the nose and send signals to the olfactory bulb in the brain. If these neurons are damaged, replacement cells are provided by a type of cell within the olfactory epithelium called basal cells.
The cells within the olfactory epithelium that serve as the source of replacement cells for damaged olfactory receptor neurons are called basal cells. Basal cells are stem cells that have the ability to differentiate into various cell types, including olfactory receptor neurons. When olfactory receptor neurons are damaged or need to be replaced, basal cells can divide and differentiate into new neurons, contributing to the regeneration of the olfactory epithelium and the sense of smell. This regenerative capacity helps the olfactory system to continually adapt and respond to environmental changes.