Diagrammatical representation of the stretch reflex

	Type II afferent nerve fibers from Golgi tendon organs
Golgi tendon organ		Gamma efferent fiber causes reflex relaxation Alpha motorneuron causes reflex contraction

5.5. Change the italic words for those equivalents from the text.

1. Proprioceptive neuromuscular facilitation (PNF) is an approach to therapeutic exercise grounded on the principles of functional human anatomy and neurophysiology. 2. It applies proprioceptive, cutaneous, and auditory input to create functional improvement in motor output and can be a vital component in the rehabilitation process of many sports-related injuries. 3. These techniques have been recommended for enhancing strength, flexibility, and range of motion. 4. It is essential for the sports therapist to use the principles and techniques of PNF as a component of a rehabilitation program.

5.6. Insert articles if it is necessary.