Topic 6 Nervous System: Three Types of Neurons

Question 1

• Receive stimulus from the environment and send the stimulus to the brain for processing

Answer 1

Sensory (afferent) neurons

Question 2

• Located in spinal cord and brain
• Receive impulses from sensory neurons
• Are integrators as they evaluate impulses for the appropriate response
• 99% of nerves are interneurons
• Are found in reflex arcs but some do not require an interneuron

Answer 2

Association (interneuron) neuron

Question 3

• Travel from the brain and stimulate effectors, which are target cells that elicit some response
• May stimulate muscles, sweat glands, or cells in the stomach to secrete gastrin

Answer 3

Motor (efferent) neurons