Cerebrospinal fluid is found in the

ATI LPN

ATI LPN Test Bank

Cerebrospinal fluid is found in the:

A. Subdural space B. Epidural space C. Subarachnoid space D. Meningeal space

Correct Answer: C

Rationale: CSF flows in the subarachnoid space, cushioning the CNS. [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]

The lumbar plexus gives rise to the femoral nerve, which innervates muscles and skin in the:

A. Arm B. Leg C. Abdomen D. Face

Correct Answer: B

Rationale: The femoral nerve (L2-L4, lumbar plexus) innervates the anterior thigh/leg. [Level: Knowledge]

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