$$F_{reflex} = k \times \Delta x$$

Question 1

Which sensory receptor initiates the stretch reflex in response to muscle being stretched?

Accepted Answer

Muscle spindles

Question 2

During the stretch reflex, what is the primary effect on the antagonistic muscle?

Accepted Answer

It relaxes

Question 3

Which of the following best describes the synaptic pathway of the stretch reflex?

Accepted Answer

It is a monosynaptic reflex

Question 4

Reciprocal inhibition during the stretch reflex results in which of the following?

Accepted Answer

Inhibition of antagonistic muscles

Question 5

The tendon reflex is initiated by which sensory receptor?

Accepted Answer

Golgi tendon organs

Question 6

What is the main purpose of the tendon reflex?

Accepted Answer

To prevent tendon injury

Question 7

During the tendon reflex, what happens to the muscle attached to the stimulated tendon?

Accepted Answer

It relaxes

Question 8

Which equation best represents the relationship between force and tension in the tendon reflex?

Accepted Answer

$$F_{tendon} = T_{muscle} - T_{inhibition}$$

Question 9

Which reflex is classified as polysynaptic?

Accepted Answer

Tendon reflex

Question 10

A rapid withdrawal of a body part from a harmful stimulus is called:

Accepted Answer

Flexor (withdrawal) reflex

Question 11

Which of the following best describes the crossed-extensor reflex?

Accepted Answer

It causes extension of the limb on the opposite side of the stimulus

Question 12

Which reflex helps maintain balance when one leg is withdrawn from a painful stimulus?

Accepted Answer

Crossed-extensor reflex

Question 13

Which of the following is an example of a contralateral reflex?

Accepted Answer

Crossed-extensor reflex

Question 14

If a person steps on a sharp object with their right foot, which reflex causes the left leg to extend to maintain balance?

Accepted Answer

Crossed-extensor reflex

Question 15

Which of the following best explains reciprocal inhibition in the context of the stretch reflex?

Accepted Answer

It inhibits antagonistic muscle activity

Question 16

During a strength training session, why does the tendon reflex NOT enhance muscular endurance?

Accepted Answer

It prevents excessive muscle tension

Question 17

Which mechanism causes Golgi tendon organs to start firing action potentials?

Accepted Answer

As the muscle contracts, collagen fibers 'squeeze' the nerve endings of the Golgi tendon organ

Question 18

Which equation best represents the force generated during the stretch reflex?

Accepted Answer

$$F_{reflex} = k 	imes \Delta x$$

Question 19

Which of the following is TRUE regarding the ipsilateral nature of the flexor reflex?

Accepted Answer

Motor activity occurs on the same side as the stimulus

Question 20

A patient presents with an inability to relax their muscle after a strong contraction. Which reflex is most likely impaired?

Accepted Answer

Tendon reflex

Spinal Reflexes: Stretch, Tendon, and Flexor Reflexes

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