The patellar reflex, also called the knee reflex or knee-jerk, is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord.
Circumstances under which the Achilles reflex may be examined include tests of sciatic nerve function. If the roots of S1 and S2 are damaged in any way, such as by pinching where they exit the spine or by disk herniation, the reaction may be delayed or diminished. Certain diseases may also...
What is a Stretch Reflex? What is a Patellar Reflex? Discussion Comments Bypastanaga— On Jun 08, 2011 @umbra21 - I don't know about fish but we share some reflexes with frogs. Like the scratch reflex. There have been a lot of studies done on frogs to investigate that one (which is...
Reflexes:Reflexes are a fast and automatic sequence of actions that occurs in response to a particular stimulus. There are five events in a reflex arc: (1) a sensory receptor responds to a specific stimulus by sending a nerve impulse, (2) the nerve impulse propagate...
Which is voluntary and which are involuntary? Discuss a stretch reflex and how polysynaptic and monosynaptic reflexes differ. Is the response of your pupil a reflex or a voluntary action? Describe how this response is controlled by the nervous system. Name and explain the three steps of urine ...
The fetus develops reflexes including swallowing and sucking The fetus can respond to certain stimuli The brain undergoes its most important period of growth from the fifth month on Hair grows on the head of the fetus Eyelids begin to open and eyebrows and eyelashes are visible ...
Hesslewhite had been chosen because of its proximity to the Valentine home, and so after only ninety minutes in the carriage, they turned onto the drive and began the last short stretch. “The trees are certainly well leafed this year,” Aunt Anna remarked. “Your mother’s roses are doin...
The Bainbridge Reflex is triggered when the stretch receptors in the atria are triggered – this means that there is an increased level of venous blood (not to be confused with an increase in arterial blood pressure). The Bainbridge and Baroreceptor reflexes work antagonistically, meaning that if...
By the way, did you know that there are other ways to check spinal reflexes too? It comes down to testing certain reflex tendons. For example, aside from testing the knee jerk reflex, doctors can also check the ankle jerk reflex by checking your achilles tendon reflex. Doctors can also ch...
I heard them as a child while doctors and physical therapists spoke over my head after testing my reflexes and my dorsiflexion and watching me walk up and back, up and back. I’ve read them in my medical records. They are the words I use to explain myself to people and to introduce ...