Moving the bone posteriorly in the horizontal plane; ie movement in which the jaw is pulled in.
Retinaculum
A retaining connective tissue band.
Reticular Layer
Deeper layer of the dermis containing dense, irregular connective tissue; pars reticularis.
Reticular Activating System (RAS)
Network of cells in the brain responsible for the conscious, alert state of the body.
Resting Membrane Potential
Potential inside a resting cell in relation to the outside; transmembrane potential.
Respiratory System
The system that includes all parts from the nose to the lung alveoli; responsible for gas exchange.
Respiratory Rate
The frequency of breathing per minute; number of breaths per minute.
Respiratory Minute Volume
The amount of air breathed in or out per minute.