Question

Mark’s dentist gives him a shot before performing a root canal. The dentist says the shot is anesthesia and that Mark won't feel any pain. Mark feels his gums going numb, while the rest of his body is working fine. What has the anesthesia actually done?

The anesthesia has blocked_________ from carrying signals to the_____ .
1).Interneurons
1B).Motor Neurons
1c).sensory neurons

2A).spinal Cord
2b).Brain
2c).Muscles

Answer 1

Answer: 1) a. Interneurons 2)b Brain

Step-by-step explanation:

The anesthesia has blocked the Inter-neurons from carrying signals to the brain.

An interneuron is a group of specialized neurons which connects sensory neurons present at the sense organs to the motor neuron present in the brain. The blocking of the interneuron will prevent the signals to the brain. Therefore, the sense of pain will not be inferred.

Answer 2

The anesthesia has blocked the Inter-neurons from carrying signals to the brain.

Inter- neurons are neurons that creates a neural circuit between sensory or motor neurons and the central nervous system enabling communication between them.