Webb11 sep. 2024 · Receptor in the skin detects a stimulus (the change in temperature). Sensory neurone sends electrical impulses to relay neurone, which are located in the spinal cord. They connect sensory... WebbIn the case of the knee-jerk reflex, the expected response is an extension of the leg at the knee. If the reflex is greater than expected (hyperactive), less than expected (hypoactive) or totally absent, that suggests potential pathology. Now let's look at how the stretch reflex works. Image by JS F21Muscle Spindle and Golgi Tendon Organ
Stretch Reflex - an overview ScienceDirect Topics
Webb8 apr. 2016 · It does this in order to oppose the stretching from whatever external force is involved,” explains Dr Van Vuuren. He continues by saying the muscle spindle in the frontal upper leg muscles (the quadriceps) causes the knee jerk reflex, although the actual reflex starts when your doctor taps your knee. In principle, your doctor is tapping the ... WebbIt is the first component of the reflex arc. A receptor serves to detect the stimulus that is any change in the external environment. ... Different stretch reflexes are performed during the normal medical examination of a person such as knee jerk, etc. Golgi Tendon Reflex. Another example of reflex action and the reflex arc is the Golgi tendon ... hat store miami beach
Solved Activity 3. Initiating Stretch Reflexes 1. What is - Chegg
WebbFigure 21.1 The five basic components of reflex arcs. Stimulus. Skin. 1 Receptor Interneuron. 2 Sensory neuron. 3 Integration center. 4 Motor neuron. 5 Effector. Spinal cord (in ... Figure 21.3-2 The patellar (knee-jerk) reflex—a specific example of a stretch reflex. Webb20 nov. 2024 · In the knee jerk reflex effector and receptor are motor endplate and muscle spindle respectively. What nerve is responsible for knee jerk? Although the knee jerk reflex is mediated by the L3 and L4 nerve roots, evidence exists that altered knee jerk expression may occur with exclusively L5 radiculopathy. Webb17 jan. 2024 · A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus. When a person accidentally touches a hot object, they automatically jerk their hand away without thinking. A reflex does not require any thought input. The path taken by the nerve impulses in a reflex is called a … hat store maryland