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.

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.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter5: The Central Nervous System

Section: Chapter Questions

Problem 3RE: Stellate cells initially process sensory input to the cortex, whereas pyramidal cells send fibers...

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Stellate cells initially process sensory input to the cortex, whereas pyramidal cells send fibers from the cortex to terminate on efferent motor neurons. (True or false)
Inhibitory interneurons associated with the reflex arc are turned on by glutamate. Group of answer choices True False The tendon tap reflex can be elicited by a stretch in a muscle. What is the order of information flow from the primary sensory afferent to the lower motor neuron? Group of answer choices dorsal horn, dorsal root, ventral horn dorsal root, dorsal horn, ventral horn ventral root, ventral horn, dorsal horn, dorsal root In regards to the spinothalamic tract, where does the second order neuron cross midline? Group of answer choices at the spinal cord segment at the brainstem at the thalamus it never crosses midline
All of the following are true concerning reflex arcs EXCEPT A.they involve a few neurons and directly enter and immediately leave the spinal cord B.they are used to prevent harm C.they are subconscious and automatic D.they only use the PNS and not the CNS
Muscle fatigue has been suggested as one factor that can increase the chances of non-contact sports injuries, such as anterior cruciate ligament (ACL) tears. Notably, some researchers have noted a delay in the reflex response after muscle fatigue. With your understanding of the stretch reflex, which of the following is the most logical contributing factor to the injury? a. the distraction of the game causes inhibitory impulses to be sent down from the somatosensory cortex, so muscles are not operating at full capacity b. the proprioceptors adapt and become less sensitive c. there is an increase in time to muscle contraction after triggering a reflex
This yellow dotted outline in this image shows the location of a lesion of the sensory afferents in the dorsal columns in spinal cord. State two different signs or symptoms that the person would present with. State whether they are ipsilateral or contralateral.
Identify the Golgi tendon reflex (which is an innate reflex) as (a) spinal or cranial, (b) somatic or visceral, (c) monosynaptic or polysynaptic, and (d) ipsilateral or contralateral.
the bacterium clostridium tetani produce a toxin called tetanospasmin, the causative agent os the disease tetanus. the toxin prevents the release of inhibitory transmitters in the CNS and so blocks the resulting IPSPs they would normally generate. what are some of the functions of inhibitory synapses? considering this what symptoms would you expect from the disease tetanus, and why? ( hint: imagine trying to stand up if all of the muscles in your lower limb contracted at the same time.)
Watch this video (http://openstaxcollege.org/l/reflextest) to see how to test reflexes in the abdomen.Testing reflexes of the trunk is not commonly performedin the neurological exam, but if findings suggest a problemwith the thoracic segments of the spinal cord, a series ofsuperficial reflexes of the abdomen can localize functionto those segments. If contraction is not observed when theskin lateral to the umbilicus (belly button) is stimulated,what level of the spinal cord may be damaged?
Watch this video (http://openstaxcollege.org/l/graymatter) to learn about the gray matter of the spinalcord that receives input from fibers of the dorsal (posterior)root and sends information out through the fibers of theventral (anterior) root. As discussed in this video, theseconnections represent the interactions of the CNS withperipheral structures for both sensory and motor functions.The cervical and lumbar spinal cords have enlargements asa result of larger populations of neurons. What are theseenlargements responsible for?
Huntington’s disease causes too much ballistic movement due to which of the following reasons? Group of answer choices Loss of the inhibitory connection between the striatum and the globus pallidus external Loss of the inhibitory connection between the striatum and the globus pallidus internal Loss of the inhibitory connection between the globus pallidus external and the globus pallidus internal Increased activity of globus pallidus internal neurons
Emergency room doctors often shine a light into the eyes of patients with head injuries to test their pupillary reflex. The structure that relays the information between the optic nerve and the motor neuron, and the division of the nervous system that the structure is part of , respectively are: Select one: a. an interneuron and the peripheral nervous system b. the occipital lobe and the peripheral nervous system c. the occipital lobe and the central nervous system d. an interneuron and the central nervous system
Infants have a reflex called sucking reflex. One way to initiate this reflex is to touch the cheek of the infant. What is the specific reflex arc components in this reflex. What would be the classification of this reflex based on development, complexity, response and processing site. Would this be a ipsilateral or contralateral reflex?