Canadian Health Information Management Association Practice Exam

Which of the following is not an event in the process of sensation?

1. Activation of effector.

2. Generation of impulses.

3. Integration of sensory input.

4. Stimulation of sensory receptors.

The correct answer is: Activation of effector.

The process of sensation involves a series of events that start when a stimulus interacts with sensory receptors. The correct answer highlights that activation of effectors is not part of the sensation process itself. Instead, sensation primarily includes the generation of impulses, integration of sensory input, and stimulation of sensory receptors. When a stimulus is present, it is detected by sensory receptors, leading to the stimulation of these receptors. This stimulation results in the generation of impulses, which are electrical signals that travel along sensory neurons towards the central nervous system. Once these impulses reach the brain, they undergo integration, where the sensory input is interpreted and processed for perception. On the contrary, effector activation is related to the process of response rather than sensation. Effectors, such as muscles or glands, come into play once the brain has integrated and processed the sensory information, leading to a behavioral or physiological response, but they are not involved in the initial sensation events.