Spinal Cord

Which layer of the meninges is the tough outer layer that protects the spinal cord?

• Pia mater

• Arachnoid mater

• Dura mater

• Filum terminale

The middle layer of the meninges that is web-like and provides cushioning is called the:

• Dura mater

• Pia mater

• Arachnoid mater

• Anterior median fissure

Which layer of the meninges is the delicate inner layer that closely adheres to the surface of the spinal cord?

• Arachnoid mater

• Dura mater

• Pia mater

• Gray commissure

Which part of the spinal cord contains motor neurons that send signals to the muscles?

• Posterior horn

• Lateral horn

• Anterior (ventral) horn

• Gray commissure

Where are sensory neurons located that receive information from the body?

• Anterior (ventral) horn

• Posterior (dorsal) horn

• Lateral horn

• Dorsal root

In which region of the spinal cord are autonomic neurons found, specifically in the thoracic and upper lumbar regions?

• Posterior (dorsal) horn

• Anterior (ventral) horn

• Lateral horn

• Dorsal root ganglion

What structure connects the left and right sides of the spinal cord, forming a bridge of gray matter?

• Anterior median fissure

• Gray commissure

• Posterior median sulcus

• Central canal

Which of the following contains ascending sensory pathways that transmit sensory information related to fine touch, vibration, and proprioception from the body to the brain?

• Posterior (dorsal) white column/funiculus

• Lateral white column/funiculus

• Anterior (ventral) white column/funiculus

• Posterior (dorsal) horn

Which white column of the spinal cord contains both ascending and descending pathways and transmits signals involved in pain, temperature, and voluntary motor control?

• Posterior (dorsal) white column/funiculus

• Lateral white column/funiculus

• Anterior (ventral) white column/funiculus

• Lateral horn

Which of the following describes the posterior median sulcus in the spinal cord?

• A landmark for dividing the spinal cord into two symmetrical halves

• A structure that carries sensory information to the spinal cord

• A canal containing cerebrospinal fluid

• A bridge of gray matter connecting the left and right sides of the spinal cord