Question

The 2nd-order neurons of trigeminal nerve nuclei synapse in the ventral posteromedial (VPM) nucleus of the thalamus. What is the function of the VPM nucleus?

1) Relay sensory information from the face to the primary somatosensory cortex
2) Control motor movements of the face
3) Regulate blood flow to the face
4) Produce and release hormones

Answer 1

The ventral posteromedial (VPM) nucleus of the thalamus relays sensory information from the face to the primary somatosensory cortex.

Step-by-step explanation:

The function of the ventral posteromedial (VPM) nucleus of the thalamus is to relay sensory information from the face to the primary somatosensory cortex. This nucleus receives input from the second-order neurons of the trigeminal nerve nuclei and projects those signals to the appropriate area of the cerebral cortex that processes sensory information from the face. It plays a crucial role in transmitting tactile sensations, such as touch and pressure, from the face to the brain for further processing and perception.