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Figure-Ground
The differentiation between the foreground and the background of a scene; this refers to all sensory systems, including vision, hearing, touch.

Flaccid
Lacking normal muscle tone; limp.

Flexion
Bending a joint.

Foley Catheter
This is a tube inserted into the urinary bladder for drainage of urine. The urine drains through the tube and collects into a plastic bag.

Frontal Lobe
Front part of the brain; involved in planning, organizing, problem solving, selective attention, personality and a variety of "higher cognitive functions."

Frustration Tolerance
The ability to persist in completing a task despite apparent difficulty. Individuals with a poor frustration tolerance will often refuse to complete tasks which are the least bit difficult. Angry behavior, such as yelling or throwing things while attempting a task is also indicative of poor frustration tolerance.