jaw jerk
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Jaw jerk reflex — The jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient s trigeminal nerve (CN V).[1] The mandible or lower jaw is tapped at a downward angle just below the lips at the chin while the mouth is held… … Wikipedia
jaw-jerk reflex — an abnormal reflex elicited by lightly placing the index finger across the chin of the patient and tapping it with a tendon hammer while the jaw hangs loosely open. A brisk upward movement of the jaw indicates an upper motor neurone disorder… … The new mediacal dictionary
jaw reflex — jaw jerk reflex closure of the mouth caused by a downward blow on the lower jaw while it hangs passively open; this is most obvious with lesions of the corticospinal tract and is seen less often in healthy individuals. Called also jaw jerk, chin… … Medical dictionary
jerk — 1. A sudden pull. 2. SYN: deep reflex. ankle j. SYN: Achilles reflex. chin j. SYN: jaw reflex. crossed j. SYN: crossed reflex. crossed adductor j. SYN: crossed adductor reflex. crossed knee j. SYN: crossed knee reflex. elb … Medical dictionary
JJ — jaw jerk; jejunojejunostomy … Medical dictionary
JJ — • jaw jerk; • jejunojejunostomy … Dictionary of medical acronyms & abbreviations
Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… … Medical dictionary
Stretch reflex — The stretch reflex (myotatic reflex) is a muscle contraction in response to stretching within the muscle. It is a monosynaptic reflex which provides automatic regulation of skeletal muscle length. When a muscle lengthens, the muscle spindle is… … Wikipedia
Trigeminal nerve — Nerve: Trigeminal nerve Trigeminal nerve, shown in yellow … Wikipedia
Primitive reflexes — are reflex actions originating in the central nervous system that are exhibited by normal infants but not neurologically intact adults, in response to particular stimuli. These reflexes disappear or are inhibited by the frontal lobes as a child… … Wikipedia
