Meiosis is a specific type of cellular division which is necessary for sexual reproduction.

Epinephrine or adrenalin activates arousal mechanisms which are triggers for the fight-or-flight response and posturing. Physical queues of attack posturing are elevated shoulders, clenched jaw and fists, flexed arms and aggressive behavior.

An antigen is a substance either foreign or internal that triggers an immune response. This response is triggered by a histocompatibility molecule within each cell that can trigger an immune response.

The AC joint is the acromioclavicular joint located at the junction of the acromion process and the clavicle. The AC joint is assessed to indicate the symmetry of the shoulder.

Testing the range of motion while the client is moving under their own power is known as an active range of motion test.