MDCAT Biology MCQ #2430

In a laboratory experiment, the dorsal root of a spinal nerve in a frog is surgically severed. What is the most likely physiological outcome?

MDCAT Biology MCQ #2430

  1. Question 1

    Q1. In a laboratory experiment, the dorsal root of a spinal nerve in a frog is surgically severed. What is the most likely physiological outcome?

    • A) Loss of sensory perception
    • B) Loss of motor control
    • C) Loss of both sensation and motor
    • D) Exaggerated muscle reflexes

    Answer: Loss of sensory perception

    Explanation: The dorsal root carries sensory fibers only; the ventral root is incorrect because it carries motor fibers responsible for muscle contraction.