Which of the following is NOT true of the cerebellar peduncles?

The question asks: "Which of the following is NOT true of the cerebellar peduncles?"

Let's analyze each option:

• A. contain input pathways of the cerebellum. This statement is true. The inferior cerebellar peduncle carries input from the spinal cord and brainstem, and the middle cerebellar peduncle carries input from the pontine nuclei (relaying information from the cerebral cortex) to the cerebellum.
• B. contain output pathway of the cerebellum. This statement is true. The superior cerebellar peduncle primarily carries output fibers from the cerebellum to the red nucleus and thalamus.
• C. contain the corticopontocerebellar tract fibers. This statement is true. The corticopontocerebellar pathway is a major input pathway to the cerebellum