tendon jerk
31knee jerk — a reflex extension of the leg, caused by contraction of the quadriceps, resulting from a sharp tap on the patellar tendon; patellar reflex. [1875 80] * * * …
32jaw-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… …
33nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
34Upper motor neurone lesion — Infobox Disease Name = PAGENAME Caption = The motor tract. DiseasesDB = 27852 ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = An upper motor neuron lesion is a lesion of the neural pathway above the anterior… …
35myxedema — Hypothyroidism characterized by a relatively hard edema of subcutaneous tissue, with increased content of mucins (proteoglycans) in the fluid; characterized by somnolence, slow mentation, dryness and loss of hair, increased fluid in …
36Reflex — 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… …
37Patellar reflex — The patellar reflex or knee jerk is a stretch reflex and is a myotatic reflex. MechanismStriking the patellar tendon with a tendon hammer just below the patella stretches the quadriceps tendon. This stimulates stretch sensory receptors (most… …
38sensory reception, human — Introduction means by which humans react to changes in external and internal environments. Ancient philosophers called the human senses “the windows of the soul,” and Aristotle described at least five senses sight, hearing, smell, taste, and… …
39Stretch 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… …
40List of reflexes (alphabetical) — A list of reflexes in humans. *Accommodation reflex coordinated changes in 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… …
