Mindblown: a blog about philosophy.
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Neck-righting reflex
In a supine infant, rotation of the trunk in the same direction as that in which the head is turned. This reflex appears at age 4 to 6 months and is no longer obtainable by age 2 years.
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Monosynaptic reflex
A reflex involving only two neurons, an afferent and an efferent.
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Mayer’s reflex
Opposition and adduction of the thumb, flexion at the metacarpophalangeal joint, and extension at the interphalangeal joint in response to downward pressure on the index finger.
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Mass reflex
Autonomic dysfunction that may occur as a late consequence of transection of the spinal cord. It is marked by episodes of sweating, bradycardia, hypotension, urinary incontinence, and muscular spasms of the legs.
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Mandibular reflex
Clonic movement resulting from percussing or stroking the lower jaw.
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Magnus-de Kleijn reflex
In decerebrate rigidity, extension of the limbs on the side to which the chin is turned by rotating the head. There is flexion of the limbs on the opposite side.
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Lumbar reflex
An irritation of the skin over the erector spinae muscles, causing contraction of the back muscles.
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Local reflex
A reflex that does not involve the central nervous system (e.g., the myenteric reflex, which occurs even when extrinsic nerves to the intestine have been cut).
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Lip reflex
The reflex movement of the lips when the angle of the mouth is suddenly and lightly tapped during sleep.
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Light reflex
Constriction of the pupil when light is flashed into the eye. An inherent reflexive action where the eye’s pupil instinctively reacts to the level of incoming light. Typically, the pupil contracts when exposed to intense light, regulating the quantity of light entering the eye. Conversely, in dim light, the pupil expands or dilates. An unusual…
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