Questions on spinal sections.

Question 1

Type of neurons present in the lateral horn.

What section of the spine contains the lateral horn?

Answer 1

Neurons:

• Preganglionic motor neurons.

Thoracic spine.

Question 2

Types of neurons in the dorsal horn.

Which laminae are they present.

Answer 2

• V1 and V2 interneurons.

Laminae VII-IX. 7-9.

Question 3

What type of neurons has its cell bodies in the dorsal horn?

which ganglion?

which laminae are they present?

Answer 3

Sensory neurons( second order).

Dorsal root ganglion.

Laminae I-VI, 1-6.

Question 4

Name one Dorsal column pathway.

State the2 divisions of this pathway.

State the different functions within these 2 divisions of tracts.

[8 marks].

Answer 4

• Spinothalamic tract.

Sensory+Ascending.

Anterior spinothalamic tract and Lateral spinothalamic tract.

The function of Lateral spinothalamic:

• pain and temperature.

Anterior:

• crude touch and pressure.

Question 5

Where would you find the cell bodies of the corticospinal tract?

where would their axons be?

Answer 5

Cell bodies: in the cerebral cortex.

• Motor cortex.
• Axons: pyramids.

Question 6

The difference in function between the anterior and lateral corticospinal tract.

[3 marks].

Answer 6

Lateral:

• Muscles of the limbs.

Anterior:

• Axial muscles

Overall: allows voluntary movement of limbs and trunk.