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Reflex Exam. Components of a Reflex Arc. Components of the Stretch Reflex. L3,L4. neurological exam and is graded. exam and is graded on the following scale: 0 (absent) 1+ (hypoactive) 2+ (brisk, normal) 3+ (hyperactive without clonus) 4+ (hyperactive with mild clonus)
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neurologicalexam and is graded exam and is graded on the following scale: 0 (absent) 1+ (hypoactive) 2+ (brisk, normal) 3+ (hyperactive without clonus) 4+ (hyperactive with mild clonus) 5+ (hyperactive with sustained clonus) Absence of the knee jerk (westphal’s sign) can signify an abnormality anywhere within the reflex arc, including the muscle spindle, the afferent nerve fibers, or the motor neurons to the quadriceps muscle. The most common cause is a peripheral neuropathy from such things as diabetes, alcoholism, and toxins. A hyperactive reflex can signify an interruption of corticospinal and other descending pathways that influence the reflex arc.
clonus This neurologic sign is the occurrence of regular, repetitive, rhythmic contractions of a muscle subjected to sudden, maintained stretch. Only sustained clonus with five or more beats is considered abnormal.
Maxillary or Jaw Reflex(Monosynaptic) Muscles : Temporalis Masseter Medial Pterygoid
Plantar Response Babinski Reflex