Demonstrate your understanding of the muscle spindle apparatus by correctly fill
ID: 168332 • Letter: D
Question
Demonstrate your understanding of the muscle spindle apparatus by correctly filling in the terms into the following statements:
The nervous system regulates skeletal muscle contraction by receiving constant ____________ feedback.
The tension a muscle exerts on its tendons is determined by ____________ tendon organs.
The muscle spindle ____________ provides input on muscle length.
The thin muscle cells within the connective tissue sheath are called ____________ fibers.
The muscle fibers which insert into the tendons of the muscle are called ____________ fibers.
Word Bank:
-extrafusal
-apparatus
-sensory
-motor
-intrafusal
-Golgi
-organ
Explanation / Answer
Answer:
1. The nervous system regulates skeletal muscle contraction by receiving constant sensory feedback.
The induction of epidural anesthesia using lidocaine reduces motor strength and blocks sensory feedback from contracting skeletal muscle.
2. The tension a muscle exerts on its tendons is determined by Golgi tendon organs.
The Golgi tendon organs monitor the tension that the muscle exerts on its tendons. As the tension increases, sensory neurons from Golgi tendon organs inhibit the activity of alpha motoneurons.
3. The muscle spindle apparatus provides input on muscle length.
4. The thin muscle cells within the connective tissue sheath are called intrafusal fibers.
5. The muscle fibers which insert into the tendons of the muscle are called extrafusal fibers.
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