The question is not complete, here is the complete question:
A person picks up a heavy suitcase in order to estimate its weight and reflexively drops it. Which of the following receptors has initiated this reflex?
A) Free Nerve Ending
B) Lamellae Corpuscle
C) Tendon Organ
D) Bulbous Corpuscle
The answer is option C, the tendon organ. Tendon organ, located in the skeletal muscles, takes on the role of sensing the tension in the muscle so that it can be adjusted appropriately. In this case, the weight of the suitcase was not estimated correctly so the tension of the skeletal muscle was not enough to hold the suitcase.
An increase in the muscle tension activates receptors (Golgi tendon organ) in the tendon. The muscle relaxes and lengthens in response to an antagonist's contraction.
D-T reflex inhibits the agonist and excites the antagonist. It helps to regulate a smooth start and stop for a contraction. Input from the Golgi tendon organs are sent to the cerebellum and the cortex.
As in the given scenario, a person picks up a heavy suitcase in order to estimate its weight and reflexively drops it, tendon organ receptor has initiated this reflex.
The reaction speeds up because the enzyme lowers activation energy, making it faster than if the reaction had to take time to gain activation energy on its own. The enzyme basically lessens the time it needs to take to gain energy Hope this helps!
