Question

Arrange the following events in the proper sequence:

1. Efferent neuron reaches threshold and fires an action potential.
2. Afferent neuron reaches threshold and fires an action potential.
3. Effector organ responds by performing output.
4. Integrating center reaches decision about response.
5. Sensory organ detects change in the environment.
A) 2, 3, 5, 1, 4
B) 5, 2, 4, 1, 3
C) 5, 1, 4, 2, 3
D) 5, 3, 4, 2, 1
E) 3, 1, 4, 2, 5

Answer 1

The correct sequence of events in a sensory receptor-motor response pathway is: sensory organ detects change in the environment, afferent neuron reaches threshold and fires an action potential, integrating center reaches decision about response, efferent neuron reaches threshold and fires an action potential, effector organ responds by performing output.

Step-by-step explanation:

The correct sequence of events in a sensory receptor-motor response pathway is:

1. Sensory organ detects change in the environment (5)
2. Afferent neuron reaches threshold and fires an action potential (2)
3. Integrating center reaches decision about response (4)
4. Efferent neuron reaches threshold and fires an action potential (1)
5. Effector organ responds by performing output (3)