Multiple Choice
A neuron that transmits an impulse to the central nervous system after the neuron is stimulated by the environment is called a(n) __________.
45. Nervous System
Neurons and Action Potentials
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If your fingers touch a hot stove and you suddenly pull back, you have experienced a reflex. What is the correct order of the information processing in this reflex?
A
Motor output, sensory input, integration
B
Motor output, integration, sensory input
C
Integration, motor output, sensory input
D
integration, sensory input, motor output
E
Sensory input, integration, motor output
Verified step by step guidance1
Understand the concept of a reflex: A reflex is an automatic and rapid response to a stimulus, which does not involve the conscious part of the brain. It is a protective mechanism to prevent injury.
Identify the components involved in a reflex arc: The reflex arc typically involves sensory neurons, interneurons, and motor neurons.
Determine the sequence of events in a reflex arc: First, sensory neurons detect a stimulus (e.g., heat from a stove) and send sensory input to the central nervous system.
Next, the sensory input is processed by interneurons in the spinal cord or brain, which is known as integration. This step involves interpreting the sensory information and deciding on a response.
Finally, motor neurons carry the motor output from the central nervous system to the muscles, causing them to contract and pull the hand away from the hot stove.
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