Chapter 8 The Central Nervous System (CNS)

The spinal cord is continuous with which structure?

Medulla oblongata

Which region of the spinal cord contains neuron cell bodies?

Gray matter

The white matter of the spinal cord is organized into

Funiculi

Sensory information travels through

Ascending pathways

Which tract primarily carries pain sensation?

Lateral spinothalamic tract

The posterior columns are most important for transmitting

Fine touch and proprioception

Information in the spinocerebellar tract travels to the

Cerebellum

Motor commands traveling from the brain to the spinal cord use

Descending tracts

Which spinal cord structure receives sensory input?

Posterior horn

The anterior horn primarily contains:

Somatic motor neurons

Which pathway carries vibration sensation?

Fasciculus cuneatus/gracilis

Damage to the lateral spinothalamic tract would most likely impair

Pain and temperature sensation

The primary function of the cerebellum in sensory processing is

Coordinate movement using proprioceptive information

Which statement best describes a tract?

A bundle of axons within the CNS

Crude touch and pressure sensations are primarily carried by the

Anterior spinothalamic tract

Which statement about descending pathways is correct?

They transmit motor commands from the brain

Which structure is part of the posterior column pathway?

Fasciculus cuneatus

Proprioceptive information is important because it helps the body

Monitor body position and movement

The spinal cord ends approximately at which vertebral level in adults?

L1–L2

Which pairing is correct?

Gray matter—horns