WebJul 25, 2024 · When an MSR is initiated there is also a signal that branches off from the Ia afferent stretch neuron and activates an inhibitory interneuron that will prevent the opposing (flexor or extensor) muscle … WebBiceps reflex. Biceps reflex is a reflex test that examines the function of the C5 reflex arc and the C6 reflex arc. [1] The test is performed by using a tendon hammer to quickly depress the biceps brachii tendon [2] as it passes through the cubital fossa. Specifically, the test activates the stretch receptors inside the biceps brachii muscle ...
The Knee Jerk Reflex: More Than A Simple Medical Test
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. Many animals, most significantly humans, have been seen to have the patellar reflex, including dogs, cats, horses, and other mammalian species. See more Striking of the patellar tendon with a reflex hammer just below the patella stretches the muscle spindle in the quadriceps muscle. This produces a signal which travels back to the spinal cord and synapses (without interneurons) at the … See more Wilhelm Heinrich Erb (1840–1921) and Carl Friedrich Westphal (1833–1890) simultaneously reported the patellar tendon or knee reflex in 1875. The term knee-jerk was … See more • Tonic vibration reflex – Sustained contraction of vibrated muscle • Motor control – Regulation of movement within organisms possessing a nervous system See more After the tap of a hammer, the leg is normally extended once and comes to rest. The absence or decrease of this reflex is problematic, and known as Westphal's sign. … See more The term began to be used figuratively from the early 20th century onwards. O. O. McIntyre, in his New York Day-By-Day column in The Coshocton Tribune, October 1921, wrote: "Itinerant preacher stemming Broadway on a soap box. And gets only an occasional knee-jerk." See more • Gurfinkel' VS, Lipshits MI, Popov KE (1974). "Is the stretch reflex a basic mechanism in the system of regulation of human vertical posture?". Biofizika (in Russian). 19 (4): 744–8. PMID 4425696. • Pinnock CA, Lin ES, Smith T (2003). "Physiology of the … See more WebA) The abdominal reflex is an example of a Golgi tendon reflex. B) The knee jerk reflex is an example of a superficial reflex. C) The flexor reflex is initiated by painful stimuli. D) Stretch reflexes are hyperactive in comatose patients. C) The flexor reflex is … no bake easy peanut butter pie
Spinal Reflexes and Descending Motor Pathways (Section 3, …
WebFeb 14, 2024 · When the patellar tendon, located just below the kneecap, is tapped with a small hammer, or other device, it causes a slight stretch in the tendon, and consequently the quadriceps muscles. The result is a quick, although mild, contraction of the quadriceps muscles, resulting in a small kicking motion. Anatomy of the Myotatic Reflex WebThe knee jerk is an example of the simplest type of reflex. When the knee is tapped, the nerve that receives this stimulus sends an impulse to the spinal cord, where it is relayed to a motor nerve. This causes the quadriceps muscle at … Webtested besetting a subject on the laboratory bench with legs hanging free or with knees crossed - one taps the patellar ligament sharply with the broad side of the reflex hammer - … no bake cookies recipe chocolate chips