Sensory Receptors and Muscle Stretch

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Questions and Answers

What type of stretch is primarily monitored by muscle spindles?

Slow stretch

Quick stretch (correct)

Static stretch

Both quick and slow stretches

Inhibited muscles are prone to which of the following conditions?

Tightness

Weakness (correct)

Spasms

Hypertrophy

Which of the following exercises is NOT commonly used for lower extremities?

Runner’s Stretch

Hamstring Stretches

Table Slides (correct)

Prone Knee Hangs

Which equipment is typically utilized in stretching exercise programs?

Incline ramps Signup and view all the answers

What is a primary objective of PNF inhibition techniques?

Achieve sarcomere give in facilitated muscles Signup and view all the answers

Match the following sensory receptors with their primary function:

Muscle spindle = Monitors velocity of muscle stretch GTO = Senses length changes in muscle Signup and view all the answers

Match the following exercises with their target area:

Sleeper stretch = Upper extremities Figure 4 = Lower extremities Prone press up = Trunk Cat and Cow = Spinal mobility Signup and view all the answers

Match the following stretching techniques with their intended purpose:

PNF inhibition = Promote sarcomere give in facilitated muscles Static stretching = Enhance flexibility without rapid movements Dynamic stretching = Warm-up for activities by enhancing range of motion Selective stretching = Preserve functional grasp in specific muscles Signup and view all the answers

Match the following stretching equipment with their common usage:

Straps = Assisting in deeper stretches Pulleys = Facilitating controlled stretching Total gym = Providing resistance for various exercises Stationary bikes = Improving lower body circulation Signup and view all the answers

Match the following muscle conditions with their respective characteristics:

Facilitated muscles = Prone to tightness or shortness Inhibited muscles = Prone to weakness or inhibition Long finger flexors in hypertonicity = Increased resistance to stretch Back extensors in SCI = Critical for maintaining upright posture Signup and view all the answers

Muscle spindles are primarily responsible for monitoring the velocity of muscle stretch.

True Signup and view all the answers

GTO inhibits muscle contraction by promoting muscle tension and spasm.

False Signup and view all the answers

Inhibited muscles are commonly prone to tightness or shortness.

False Signup and view all the answers

Performing a lunge for hip flexors is an unsuitable exercise for lowering muscle tension.

False Signup and view all the answers

Selective stretching is important for individuals with SCI to preserve functional grasp.

True Signup and view all the answers

Study Notes

Sensory Receptors and Muscle Stretch

Muscle spindles detect the velocity and duration of muscle stretch.
Muscle spindles sense changes in muscle length and the rate of stretching.
Afferent signals to motor neurons trigger (facilitate) contraction of both intrafusal and extrafusal fibers.
Golgi tendon organs (GTOs) provide sensory feedback about muscle tension.
GTOs are inhibitory, meaning they reduce muscle contraction.

PNF Inhibition Techniques for Facilitated Muscles

PNF (Proprioceptive Neuromuscular Facilitation) techniques can promote "sarcomere give" in muscles with increased tension or spasms.

Muscle Types and Stretch Responses

Facilitated muscles: tend to be tight or short.
Inhibited muscles: tend to be weak or inhibited.
Resistance to tensile force ranks: tendons > ligaments/capsules/fascia > skin.

Stretching Exercises (UE, LE, Trunk)

Upper Extremity (UE): corner/doorway stretch, table slides, sleeper stretch, prayer stretch
Lower Extremity (LE): hamstring stretches (seated, supine, standing), SKTC, lunge for hip flexors, prone knee hangs, heel slides
Trunk: lower trunk rotation, prone prop/press up, double knee to chest, posterior pelvic tilt, scalene/upper trapezius stretch(arm fixed), active range of motion (AROM) of neck, axial extension, cat-cow.

Equipment for Stretching Programs

Stationary bikes, straps, incline ramps, wands, pulleys, vigor gym, total gym.

Selective Stretching in Specific Patient Populations

Patients with SCI (Spinal Cord Injury):
- Prone press ups (especially for WC users)
- Anterior shoulder stretches (important for wheelchair use/transfers).
- Selective stretching is needed to preserve functional grasp (long finger flexors ) and upright LL posture (back extensors) in patients with SCI.
Patients with hypertonicity in long finger flexors due to CVA(Cerebrovascular Accident): Specific stretching to target these muscles is needed.

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Description

Explore the fascinating world of sensory receptors in muscles, focusing on how muscle spindles and Golgi tendon organs function in muscle contraction and relaxation. This quiz will delve into PNF techniques and the type of muscle responses during stretching exercises. Test your knowledge on these critical concepts in musculoskeletal physiology.