Proprioceptive Neuromuscular Facilitation (PNF) Exam 1 2024 || All Questions and Solutions (100% Correct)

Proprioceptive Neuromuscular Facilitation (PNF) Exam 1 2024 || All Questions and Solutions (100% Correct) Proprioceptive Neuromuscular Facilitation (PNF) Exam 1 2024 || All Questions and Solutions (100% Correct) What does PNF stand for? - ANSWER - Proprioceptive Neuromuscular Facilitation What are the techniques used to produce functional improvement in motor output? - ANSWER - Cutaneous and Auditory input PNF was orginally used for what populations? - ANSWER - neurologic patients PNF is used to facililate gains in __________? - ANSWER - strength and flexibility. What is the concept of facilitation? - ANSWER - An impulse causing recruitment of additional motor neurons What is the concept of Inhibitory? - ANSWER - Any stimulus causing neurons to drop out of the discharge Sherrington attributed the impulses transmitted from the peripheral stretch receptors via the afferent system as being the strongest influence on ? - ANSWER - alpha motor neurons The discharge of motor neurons can either be facilitated or inhibited by ____? - ANSWER - peripheral stimulation. Most of the PNF techniques attempt to affect either the _______ _______ or the ____ _____ ____. - ANSWER - muscle spindles and golgi tendon organs What are muscle spindles sensitive to? - ANSWER - a change in muscle length the rate of change maintaining the resting level or 'tone' of a muscle. What are GTOs responsible for? - ANSWER - detect changes in tension of the muscle-tendon unit. How is a resting muscle tone produced? - ANSWER - 1. Sensory neurons are tonically active. 2. The spinal cord integrates function. 3 Then the alpha motor neurons receive tonic input from the muscle spindles. 4. The alpha motor neurons send it to extrafusal fibers to maintain a certain level of tension. How do muscle spindle's firing rate and the extra-fusal muscle fiber respond following a quick stretch to a muscle - ANSWER - 1. the muscle stretches 2. there is an increase in afferent signals to spinal cord 3. the spinal cord sends message that there is an increase in efferent output through alpha motor neurons. 4. the muscle contracts. 5. the firing rate of afferent sensory neurons decreases.