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ExploreLearning is a Charlottesville, Virginia -based company which operates a large library of interactive online simulations for mathematics and science education in grades 3–12 called 'Gizmos'. ExploreLearning also makes Reflex, an online, game-based system for math fact memorization. [1] ExploreLearning is a business unit of Cambium ...
The Chvostek sign ( / ˈkvɒstɪk /) is a clinical sign that someone may have a low blood calcium level (a decreased serum calcium, called hypocalcemia ). The Chvostek sign is the abnormal twitching of muscles that are activated (innervated) by the facial nerve (also known as Cranial Nerve Seven, or CNVII). [1] When the facial nerve is tapped ...
Lazarus sign. The Lazarus sign or Lazarus reflex is a reflex movement in brain-dead or brainstem failure patients, [1] which causes them to briefly raise their arms and drop them crossed on their chests (in a position similar to some Egyptian mummies ). [2] [3] The phenomenon is named after the Biblical figure Lazarus of Bethany, [4] whom Jesus ...
A plantar reflex is a normal reflex that involves plantar flexion of the foot, which moves toes away from the shin and curls them down. An abnormal plantar reflex (Babinski sign) occurs when upper motor neuron control over the flexion reflex circuit is interrupted. This results in a dorsiflexion of the foot (foot angles towards the shin, big ...
The reflex — also known as the startle reflex — reaches a peak when your baby reaches 1 month and begins to disappear when they turn 2 months old. Several things may set off this reflex: a ...
Brisk reflexes refer to an above-average response during a reflex test. During a reflex test, your muscle contracts in response to taps from the reflex hammer. Quicker responses overall may lead ...
They protect your body. For instance, coughs are reflexes. You feel an irritation inside your lungs, your throat jerks, then your jaw drops, and boom. You release a big blast of air, and ideally ...
The Hoffman test determines whether a person has spinal cord damage. During this quick test, you hold out one of your arms and open your palm facedown, extending your fingers in front of you. Your ...
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