refleksisestä
Refleksis is a rapid, involuntary response to a stimulus, typically involving the nervous system. It is a fundamental aspect of human physiology, enabling quick reactions to changes in the environment. The process begins with a stimulus, such as a touch or a change in temperature, which is detected by sensory receptors. This information is then transmitted to the spinal cord or brain via nerve impulses. The central nervous system processes this information and sends a response back through motor neurons to the appropriate muscles or glands, resulting in an action.
Refleksis can be classified into two main types: spinal reflexes and cranial reflexes. Spinal reflexes occur
Refleksis plays a crucial role in maintaining homeostasis and ensuring survival. For example, the knee-jerk reflex,
In summary, refleksis is a vital physiological mechanism that allows for immediate responses to stimuli, ensuring