Question

multiple choice question

in which reflex arc do the input and output occur at different levels of the spinal cord?

contralateral
intersegmental
segmental
ipsilateral

Explanation:

Define reflex arc types

Using the Reflex Arc Physiology and Spinal Reflexes knowledge points

• Segmental reflex: A reflex in which the sensory input and motor output occur at the same level (segment) of the spinal cord.
• Intersegmental reflex: A reflex in which the sensory signal enters at one level of the spinal cord and travels up or down to activate motor neurons at other levels.
• Ipsilateral reflex: A reflex where the sensory input and motor output are on the same side of the body.
• Contralateral reflex: A reflex where the sensory input enters on one side of the body and the motor output occurs on the opposite side.

Identify the correct term

The question asks for the reflex arc where the input and output occur at different levels of the spinal cord. This corresponds directly to the definition of an intersegmental reflex.

Answer:

• Contralateral
• Intersegmental (Correct answer)
• Segmental
• Ipsilateral