triceps reflex

triceps reflex
contraction of the belly of the triceps muscle and slight extension of the upper limb when the tendon of the muscle is tapped directly, with the limb flexed and fully supported and relaxed. Called also elbow r. or jerk.

Medical dictionary. 2011.

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  • Triceps reflex — The triceps reflex, a deep tendon reflex, is a reflex as it involuntary contraction of the triceps brachii muscle. It is initiated by the Cervical (of the neck region) spinal nerve 7 nerve root (the small segment of the nerve that emerges from… …   Wikipedia

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  • 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

  • triceps surae reflex — plantar flexion of the foot caused by a twitchlike contraction of the triceps surae muscle, elicited by a tap on the Achilles tendon preferably while the patient kneels on a bed or chair, the feet hanging free over the edge; called also Achilles… …   Medical dictionary

  • triceps jerk — a tendon reflex that acts at the level of the sixth, seventh, and eighth cervical spinal nerves. With the elbow flexed and relaxed, the triceps tendon is struck just above the elbow, causing contraction of the triceps and extension of the elbow.… …   The new mediacal dictionary

  • triceps surae jerk — see under reflex …   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

  • Cushing reflex — (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing s Law) is a physiological nervous system response to increased intracranial pressure (ICP) that… …   Wikipedia

  • Vestibulo-ocular reflex — The vestibulo ocular reflex. A rotation of the head is detected, which triggers an inhibitory signal to the extraocular muscles on one side and an excitatory signal to the muscles on the other side. The result is a compensatory movement of the… …   Wikipedia

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