Knee-jerk reflex, sudden kicking movement of the lower leg in response to a sharp tap on the patellar tendon, which lies just below the kneecap. One of the ...
The patellar reflex or knee-jerk is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord. Contents. 1 Mechanism; 2 Clinical significance ...
3 Jan 2016 ... In my 2-Minute Neuroscience videos I explain neuroscience topics in 2 minutes or less. In this video, I discuss the knee-jerk reflex.
3 Jan 2016 ... The knee-jerk reflex, also known as the patellar reflex, is a simple reflex that causes the contraction of the quadriceps muscle when the patellar ...
28 Apr 2017 ... Doctors will test reflexes by tapping the tendon just below the knee, and this causes the leg to kick out. This knee-jerk reflex is an example of a ...
The knee jerk reflex is one that you may have had tested at a check up at the doctor's office. In this test, the doctor hits your knee at a spot just below your knee cap ...
17 Apr 2020 ... Westphal's sign refers to a decreased or absent patellar tendon reflex, also known as the knee-jerk reflex, observed on physical exam.
14 Oct 2015 ... Summary. Although the knee jerk reflex is mediated by the L3 and L4 nerve roots, evidence exists that altered knee jerk expression may occur ...
6 Feb 2007 ... To test your knee jerk reflex, a doctor or nurse practitioner raps a small hammer on the tendon below your kneecap. A split second later, when ...
The normal knee-jerk reflex involves no input to or from the brain. The normal knee-jerk or, "patellar jerk," reflex is elicited when the knee is tapped below the ...
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