Name the two main types of dexterity used in the upper extremity.

The two main types of dexterity used in the upper extremity are fine motor skills and gross motor skills. Fine motor skills involve the coordinated use of small muscles in the hands and fingers to perform tasks that require precision, such as writing, buttoning a shirt, or manipulating small objects. These skills are critical for tasks that require intricate movements and detailed control.

Gross motor skills, on the other hand, involve larger muscle groups and whole-body movements, such as reaching, lifting, and throwing. These skills are essential for activities that require strength and coordinated movement across larger ranges of motion.

Recognizing the distinction between fine and gross motor skills is important, as they encompass the basic functionalities of the upper extremity for performing both delicate and robust tasks in daily life. Other choices refer to aspects of motor control, but do not categorize dexterity in the same fundamental manner.