Brain's reflex
Brain's Reflex
Brain's reflex (pronunciation: /ˈbreɪnz ˈriːfleks/) is a neurological response that is automatically and rapidly generated by the brain in response to certain stimuli.
Etymology
The term "reflex" originates from the Latin word "reflexus", meaning "bent back", while "brain" is derived from the Old English word "brægen", which means "the thinking or reasoning part of the mind".
Definition
A brain's reflex is an involuntary and nearly instantaneous movement in response to a stimulus. It involves complex neural pathways known as reflex arcs, which include both sensory and motor neurons. The brain's reflexes are crucial for survival as they enable the body to respond quickly to potential threats.
Types of Brain's Reflex
There are several types of brain's reflexes, including:
- Monosynaptic reflex: This is the simplest type of reflex that involves only one synapse in the reflex arc. An example is the patellar or knee-jerk reflex.
- Polysynaptic reflex: This type of reflex involves more than one synapse and allows for more complex responses. An example is the withdrawal reflex, which causes a person to quickly withdraw from a painful stimulus.
Related Terms
- Reflex arc: The neural pathway that mediates a reflex action.
- Neuron: A nerve cell that is the basic building block of the nervous system.
- Stimulus: Any event or situation that evokes a response.
- Sensory neuron: A neuron responsible for converting external stimuli from the organism's environment into internal electrical impulses.
- Motor neuron: A type of nerve cell that is directly involved in the control of bodily movements.
External links
- Medical encyclopedia article on Brain's reflex
- Wikipedia's article - Brain's reflex
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