What must occur before any reflex act happens? a. Response b. Awareness c. Stimulus d. Biofeedback
Health · High School · Thu Feb 04 2021
Answered on
c. Stimulus
Before any reflex act happens, a stimulus must occur. A reflex is an automatic and involuntary response to a stimulus. The sequence of events typically follows these steps:
1. A stimulus is detected by sensory receptors. This is something that causes the receptors to send a signal.
2. The sensory receptors send an electrical impulse through sensory neurons to the spinal cord or the brain.
3. The spinal cord or brain processes the information and sends a response signal out to the muscles through motor neurons.
4. The muscles react to the signal by contracting or relaxing, leading to a reflex action.
This reflex arc does not involve conscious thought, meaning awareness or deliberate thinking about the stimulus is not a part of the process. Biofeedback, on the other hand, involves becoming aware of physiological functions with the intention of being able to influence them.