Ependymal cells line the cavities of the brain and

ATI LPN

ATI LPN Test Bank

Ependymal cells line the cavities of the brain and spinal cord and play a role in:

A. Producing myelin B. Phagocytosis of debris C. Synaptic transmission D. Cerebrospinal fluid production

Correct Answer: D

Rationale: Ependymal cells produce and circulate CSF in CNS cavities. [Level: Knowledge]

The corticospinal tract is an example of a:

A. Projection tract B. Association tract C. Commissural tract D. Relay tract

Correct Answer: A

Rationale: The corticospinal tract is a projection tract, carrying motor signals from cortex to spinal cord. [Level: Knowledge]

The thalamus serves as a relay station for sensory information, directing it to the appropriate regions of the cerebral cortex, and is part of the:

A. Diencephalon B. Limbic system C. Cerebellum D. Brainstem

Correct Answer: A

Rationale: The thalamus, in the diencephalon, relays sensory input to the cortex. [Level: Knowledge]

The central canal of the spinal cord is filled with:

A. Cerebrospinal fluid B. Blood C. Lymph D. Synovial fluid

Correct Answer: A

Rationale: The central canal contains CSF, continuous with brain ventricles. [Level: Knowledge]

The primary role of Upper Motor Neurons is to:

A. Transmit signals to muscles directly B. Relay sensory information to the brain C. Initiate voluntary muscle movements D. Form spinal reflex arcs

Correct Answer: C

Rationale: UMNs initiate voluntary movements, synapsing with lower motor neurons. [Level: Knowledge]

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