Gag reflex: A reflex that causes a person to gag or choke when his palate or tongue is touched.

Gait: A manner of walking.

Gait analysis: A technique that uses camera recording, force plates, electromyography, and computer analysis to objectively measure an individual's pattern of walking.

Gastroenterologist: A specialist in digestive disorders.

Gastroesophageal reflux (GER): A condition in which stomach contents are forced back up into the esophagus and
sometimes the mouth.

Gastromomy: A surgical procedure to create an artificial opening in the stomach.

Gastromomy tube: A tube that is inserted through an incision in the abdomen directly in to the stomach, and is used to feed
an individual liquids, pureed foods, and medications. Also called a G-tube.

Generalization: Transferring a skill taught in one place, or with one person, to other places and people.

Genetic: Inherited. Related to a condition that is inherited or caused by an alteration in genetic material.

Genetic Disorder/Disability: The body or cognitive abnormality resulting from an alternation in a person's genetic code.

Genetics: The science of gene location and function; heredity.

Glia: Cells that surround nerve cells and are essential for their growth and survival and for providing the insulation (myelination) of nerve fibers.

Goniometer: An instrument used to measure joint range of motion.

Grand mal seizure: See Tonic-clonic seizure.

Gross motor: Relating to the use of the large muscles of the body, such as those in the legs, arms, and abdomen.

Gross Motor Function Classification System: Describes in detail five levels of function; within each level of function it
describes performance at four age groups (before 2 years of age; ages 2 and 3; ages 4 and 5; and, ages 6 to 12). In
the general terms, the five levels of performance are: Level I: Walks Without Restrictions; limitations are present in
more advanced motor skills. Level II: Walks Without Assistive Devices; limitations are present in walking outdoors
and in the community. Level III: Walks With Assistive Mobility Devices; limitations are present in walking outdoors
and in the community. Level IV: Self Mobility With Limitations; children are transported or use power mobility outdoors
and in the community. Level V: Self Mobility Is Severely Limited; even with use of assistive technology.

Guardian: A person appointed or designated legally to manage the property or financial affairs and to exercise the rights of
another person.