Testing Spinal cord and Nerves Part C

The video tutorial covers various aspects of the spinal cord, including the dorsal horn where sensory input is processed, the pia mater and dentate ligament, and the subarachnoid space containing cerebral spinal fluid. It also discusses the five lumbar spinal cord levels and the association of motor neuron cell bodies with the ventral horn. Finally, it identifies the L4 spinal nerve level based on its position relative to the L4 vertebrae.

What is the function of the dorsal horn in the spinal cord?

• It supports the spinal cord structure.

• It processes motor output.

• It receives sensory input.

• It produces cerebrospinal fluid.

What is the dentate ligament known for?

• Its cobweb-like appearance.

• Its location in the ventral horn.

• Its role in motor neuron function.

• Its tooth-like structure.

What does the subarachnoid space contain?

• Sensory neuron cell bodies.

• Cerebrospinal fluid.

• Blood vessels.

• Motor neuron cell bodies.

How many lumbar spinal cord levels are there?

• Six

• Four

• Three

• Five

Where are motor neuron cell bodies most likely found?

• Dorsal root

• Dorsal horn

• Ventral root

• Ventral horn