Wednesday 24 June 2015

List of reflexes



             List of reflexes (alphabetical)

  • Accommodation reflex — coordinated changes in the vergence, lens shape and pupil size when looking at a distant object after a near object.
  • Acoustic reflex or stapedius reflex or attenuation reflex — contraction of the stapedius and tensor tympani muscles in the middle ear in response to high sound intensities.
  • Ankle jerk reflex — jerking of the ankle when the Achilles tendon is hit with a tendon hammer while the foot is relaxed, stimulating the S1 reflex arc.
  • Asymmetric tonic neck reflex (ATNR) or tonic neck reflex — in infants up to four months of age, when the head is turned to the side, the arm on that side will straighten and the contralateral arm will bend.
  • Babinski reflex — in infants up to one year of age, and also in older individuals with neurological damage, a spreading of the toes and extension of the big toe in response to stroking the side of the foot.
  • Baroreflex or baroreceptor reflex — homeostatic countereffect to a sudden elevation or reduction in blood pressure detected by the baroreceptors in the aortic arch, carotid sinuses, etc.
  • Biceps reflex — a jerking of the forearm when the biceps brachii tendon is struck with a tendon hammer, stimulating the C5 and C6 reflex arcs.
  • Blushing — a reddening of the face caused by embarrassment, shame, or modesty.
  • Brachioradialis reflex — a jerking of the forearm when the brachioradialis tendon is hit with a tendon hammer while the arm is resting, stimulating the C5 and C6 reflex arcs.
  • Corneal reflex — blinking of both eyes when the cornea of either eye is touched.
  • Cough reflex — a rapid expulsion of air from the lungs after sudden opening of the glottis, and usually following irritation of the trachea.
  • Cremasteric reflex — elevation of the scrotum and testis elicited by stroking of the superior and medial part of the thigh.
  • Galant reflex — in infants up to four months of age, a rotation of the upper body towards one or other side of the back when that side is stroked.
  • Glabellar reflex("glabellar tap sign") It is elicited by repetitive tapping on the forehead. Subjects blink in response to the first several taps. If the blinking persists, this is known as Myerson's sign and is abnormal and a sign of frontal release; it is often seen in people who have Parkinson's disease.[
  • Jaw jerk reflexThe jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient's trigeminal nerve (CN V)
  • Knee jerk or patellar reflex — a kick caused by striking the patellar tendon with a tendon hammer just below the patella, stimulating the L4 and L3 reflex arcs.
  • Moro reflex — only in all infants/newborns up to 4 or 5 months of age: a sudden symmetric spreading of the arms, then unspreading and crying, caused by an unexpected loud noise or the sensation of being dropped. It is the only unlearned fear in humans.
  • Palmar grasp reflex — in infants up to six months of age, a closing of the hand in response to an object being placed in it.
  • Plantar reflex — in infants up to 1 year of age, a curling of the toes when something rubs the ball of the foot.
  • Rooting reflex — turning of an infant's head toward anything that strokes the cheek or mouth.
  • Shivering — shaking of the body in response to early hypothermia in warm-blooded animals.
  • Sneeze or sternutation — a convulsive expulsion of air from the lungs normally triggered by irritation of the nasal mucosa in the nose.
  • Sternutation — see Sneeze above.
  • Suckling reflex — sucking at anything that touches the roof of an infant's mouth.
  • Triceps reflex — jerking of the forearm when the triceps tendon is hit with a tendon hammer, stimulating the C7 and C6 reflex arcs.
  • Vagovagal reflex — contraction of muscles in the gastrointestinal tract in response to distension of the tract following consumption of food and drink.
  • Vestibulo-ocular reflex — movement of the eyes to the right when the head is rotated to the left, and vice versa.

Primitive reflexes:
Others:
·  H-reflex


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