Golgi Tendon Organs

Question 1

What are Golgi Tendon Organs?

Answer 1

Slender capsule encased receptors found at both the orgin and insertion of skeletal muscles at musculotendonous junctions

Question 2

How many extrafusal fibers enter the capulse and through what do they enter?

Answer 2

15-20 extrafusal fibers

—through a funnel like collar

***The other end of the capsule attaches to the tendon

Question 3

The collagen fibers of the epimysium and perimysium of the muscle become braided with what?

Answer 3

The collagen fibers of the receptor capsule

Question 4

Where is the receptor located?

Answer 4

At the end of type Ib nerve fibers and intertwines within the collagen of the receptor capsule

Question 5

Explain the process of Golgi Tendon Organs as contraction of extrafual fibers cause tension on the collagen bundles

Answer 5

Tension → compressing of afferent nerve ending → activation of receptor potential → generation of action potential (if stimulus is sufficient

Question 6

Golgi Tendon Organs are highly sensitive to what? ***Ultimatley providing what?

Answer 6

Small changes in muscle tension

***Continuous feedback to regualte muscle tension

Question 7

GTO’s high threshold to tension (resisted muscle stretch) plays a protective role how?

Answer 7

By inhibiting α motor neuron activiation of the contracting muscle when extremes of range are reached

Question 8

GTO work by inhibiting α motor neuron activiation of the contracting muscle when extremes of range are reached. What is this called?

Answer 8

Autogenic inhibition