The central junction of the reflex arc for the patellar reflex consists only of a synapse between the afferent and efferent neuron. Diagram such a reflex arc and label the five major components.
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The central junction of the reflex arc for the patellar reflex consists only of a synapse between the afferent and efferent neuron. Diagram such a reflex arc and label the five major components.
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- Concerning the patellar reflex, compare the reflex with and without Jendrassik's maneuver. The central junction of the reflex arc for the patellar reflex consists only of a synapse between the afferent and efferent neuron. Diagram such a reflex arc and label the five major components.Give a labeled illustration of a simple reflex arc with its components of the patella tendon tap reflex/knee jerk reflex.There are reflex arcs that employ a gamma motor neuron wrapped around a muscle spindle and involve no interneurons. Which is NOT an appropriate example of these reflex arcs among the following? patellar reflex achilles reflex inverted supinator reflex C5 reflex arcs
- Give the parts of the reflex arc for the patellar reflex including the main components and the nerve carrying both afferent and efferent impulses.When describing the reflex arcs and the neural pathways involved we often limit ourselves to the nerves carrying information from the muscle or tendon to the spinal cord and back. However, it should be clear from our ability to feel the tendon tap as well as the results from the Jendrassik’s maneuver test that it isn’t this simple. What other neural connections must be present ?You are observing in a Physical Therapy clinic and a patient presents with back pain. The images suggest that they have a disc herniation at the disk between L3 and L4. The PT you are working with believes that the disk is putting pressure on the spinal nerve that contains the afferent and efferent neurons that control the patellar tendon reflex. Using the appropriate anatomy and physiology, describe the afferent and efferent portions of this stretch reflex pathway, including a description of the receptor and what it responds to. If you performed a patellar tendon reflex, describe whether you would expect to see an enhanced or diminished response and explain why.
- Which of the following are essential components of a basic reflex arc? Select all that apply. At least one synapse Motor neuron Effector Sensory neuron Sensory receptorThe motor neuron involved in reciprocal innervation of the withdrawal reflex inhibits the extensor muscles of the limb. Considering what you learned about stretch reflexes, why does this make sense?What is affected by electrical signal sent by forth reflex arc structure?(This will be the fifth structure in the arc.)
- For each of the following statements about the line reflex, state whether it is true or false. The stretch reflex involves sensory neurons that switch directly to the motor neuron in the spinal cord The muscle contracts in response to a force applied Stretch reflexes include a sensory receptor (muscle coil)Complete the components in a polysynaptic reflex arc in the order that they are activated. Then briefly describe the function of each. #1 #2 #3 #4 #5Use logic to determine whether each of the following reflexes is a somatic reflex or an autonomic (visceral) reflex. Hint: think about what the effector is — is it a skeletal muscle, or is it a smooth / cardiac muscle or gland? -Patellar (knee-jerk) reflex -Pupillary light reflex (autonomic/somatic) -Effectors are skeletal muscles (autonomic/somatic) -Effectors are smooth muscles or glands (autonomic/somatic) -Regulation of blood pressure (autonomic/somatic) -Salivary reflex (autonomic/somatic)