DECEREBRATE REFLEX Meaning and
Definition
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The decerebrate reflex refers to an involuntary response observed in animals, including humans, that occurs as a result of damage to the higher centers of the brain, particularly the cerebral cortex. This reflex is characterized by an abnormal and exaggerated extension of the limbs accompanied by stiffness or rigidity. It is considered the most severe form of hypertonia, which is a condition characterized by increased muscle tone or tension.
The decerebrate reflex is typically observed when there is significant damage to the midbrain or brainstem, resulting in the loss of inhibitory control over the descending pathways. This loss of control leads to the activation of primitive reflexes originating in the brainstem, causing the abnormal posturing observed in decerebrate rigidity.
The reflex is named after its characteristic posture, known as decerebrate rigidity, which is characterized by the extension of both the upper and lower extremities, with the arms extended straight and pronated and the legs extended and internally rotated. In addition to the limb posturing, other symptoms associated with decerebrate rigidity may include the hyperextension of the neck, arching of the back, and clenched fists.
In clinical practice, the presence of the decerebrate reflex is considered indicative of severe brain damage, such as that resulting from traumatic brain injury, brainstem tumors, or certain neurological conditions. It is an important clinical sign that can help inform the diagnosis, prognosis, and treatment decisions for individuals with significant brain injury.
Common Misspellings for DECEREBRATE REFLEX
- secerebrate reflex
- xecerebrate reflex
- cecerebrate reflex
- fecerebrate reflex
- recerebrate reflex
- eecerebrate reflex
- dwcerebrate reflex
- dscerebrate reflex
- ddcerebrate reflex
- drcerebrate reflex
- d4cerebrate reflex
- d3cerebrate reflex
- dexerebrate reflex
- deverebrate reflex
- deferebrate reflex
- dederebrate reflex
- decwrebrate reflex
- decsrebrate reflex
- decdrebrate reflex
- decrrebrate reflex
Etymology of DECEREBRATE REFLEX
The term "decerebrate reflex" is formed by combining two words: "decerebrate" and "reflex".
The word "decerebrate" is derived from the Latin word "de-" meaning "remove" or "away", and "cerebrum" meaning "brain". Hence, "decerebrate" literally means "to remove the brain". In medical terms, it refers to the surgical or pathological removal of the cerebral hemispheres, resulting in the dysfunction or absence of higher brain functions.
The word "reflex" comes from the Latin word "reflexus", which means "to bend back" or "reflection". In medicine, "reflex" refers to an involuntary or automatic response of the body to a stimulus.
