Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
VW Spinal Cord Anat
IS-B1-Spinal Cord Anatomy
| Question | Answer |
|---|---|
| The spinal cord receives _ input and relays _ output. | Sensory, Motor |
| Poliomyelitis is damage to the somatic _ neurons. | Motor |
| Somatosensory fibers -> Interneuron -> Motor neuron | Spinal Reflex |
| UMN's come from the _ _ and synapse with _ in the spinal cord | Cerebral Cortex, LMN's |
| Cell bodies of motor neurons are found where? | Anterior Horn of spinal cord |
| Cell bodies of sensory neurons are found where? | Posterior Horn of spinal cord |
| The spinal cord extends from the foramen magnum to what spinal level? | L1/L2 |
| How many spinal nerves are there in total? | 31 |
| Which spinal nerves are all uniquely rostral to the vertebra? | 8 cervical spines (C8 is above C7 vertebra) |
| Where are the spinal cord enlargements found? | Cervical - C4 and T1 Lumbar - L1 and S2 |
| Where can you find conus medullaris? | L1-L2 vertebra |
| Where can you find cauda equina? Where is filum terminale? | Cauda equina - L1-Co1, Filum Terminale - Co1 |
| Where does the dural sac end? | S2 |
| What is the denticulate ligament? | lateral attachment of cord to dura |
| What are the three meningeal layers (in spinal column and brain) and where does the CSF stay? | Dura mater (outer), Arachnoid mater (middle) location of CSF here, Pia mater (inner) |
| Where is the lumbar cistern? What is it? | L2-S2 vertebral segments, enlarged subarachnoid space containing L1-Co1 spinal cord segments |
| Where would one perform a lumbar puncture? Why would you perform one? | Vertebral level L3-L4, spinal tap (CSF withdrawal), spinal block (anesthesia) |
| Is white matter typically cell bodies or axons? | Axons |
| Name the 3 pairs of funiculi and describe what they are. | Posterior, lateral and anterior funiculi. They are ascending and descending axons grouped into fasiculi |
| entry of sensory fibers into spinal cord | posterolateral sulcus |
| exit of motor fibers out of spinal cord | anterolateral sulcus |
| this divides funiculi into fasiculi and can only be found at T6 or higher | posterior intermediate sulcus |
| this contains sulcal branches of anterior spinal artery and divides the cord in half | anterior median fissure |
| this is where axons cross over in the spinal cord pathway | anterior white commissure |
| Posterior Columns/Medial Lemniscus Pathway includes which two subtracts? | Fasciculus gracilis and fasciculus cuneatus |
| Fasciculus gracilis is a sensory pathway relaying touch and vibration from where? | Lower extremities |
| Fasciculus cuneatus is a sensory pathway relaying touch and vibration from where? | Upper extremities |
| PC/ML Pathway is a sensory pathway receiving what? | Touch and vibration |
| Lateral Corticospinal Tract - descending - movement. | Motor |
| Anterolateral System is a sensory path receiving what? | Pain and Temperature |
| Rexed's Lamina I, II, and III and IV respectively | Posteromarginal Nucleus, Substantia Gelatinosa, Nucleus Proprius (III and IV) |
| Neurons innervating the _ are most medial | Trunk |
| Neurons innervating the _ are most lateral | Hand |
| Neurons innervating the _ muscles are posterior, and the _ muscles, anterior | flexor, extensor |
| what are 2 types of motor neurons in the anterior horn? What kind of motor neurons are in the spinal cord? | Alpha - larger, heavy myelination, fast transmission, Gamma - smaller. Lower Motor Neurons. |
| Myasthenia Gravis attacks where? | at the neuromuscular junction |
| toward the brain there is more _ matter in the spinal cord, as you descend, there is more _. | White, gray |
| At the thoracic level, fascicul gracile appears alone in the upper or lower thoracics? | Gracile only in the lowers |
| Dorsal Nucleus of Clarke is found where? | Thoracic Level |
| What does the cranial nerve XI do? | innervates SCM and trapezius |
| Name the 4 types of nuclei found throughout the cord. | 1) Posterolateral fasciculus (PLF), 2) Substantia Gelitanosa, 3) Nucleus Propius, 4) Medial Motor Nucleus |
| Primary _ axons are found in the PLF. | Sensory |
| Nociception Sensory is received by this nuclei found in the spinal cord. | Substantia Gelatinosa |
| This nuclei in the spinal cord receives touch sensory input. | Nucleus Propius |
| This nuclei in the spinal cord innervates skeletal muscles of the ipsilateral neck and trunk via motor neurons. | Medial Motor Nucleus |
| True or false - Lateral Motor Nucleus (LMN), Dorsal Nucleus of Clarke (DNC), Intermediolateral Nucleus (IML), Sacral Parasympathetic Nucleus (SPS), Phrenic Motor Nucleus (PMN), and Spinal Accessory Nucleus (SAN) are found throughout the spinal cord. | False - regionally |
| LMN is found where and is a _ nerve that innervates skeletal muscles of upper and lower ipsilateral extremities. | At the enlargements (where?) - motor |
| This nuclei is found between T1 and L2 only and is involved in reflex proprioception, dorsal spinocerebellar tract. | Dorsal Nucleus of Clarke |
| This nuclei is found between T1 and L2 only and in the lateral horn of the spinal cord. It consists of sympathetic preganglionic neurons. | Interomediolateral Nucleus |
| This nuclei is found between S2 and S4 only and represents the parasympathetic preganglionic neurons innervating pelvic viscera. | Sacral Parasympathetic Nucleus |
| This nucleus is found between C3 and C5 and innervates the skeletal muscle of the ipsilateral half of the diaphragm | Phrenic Motor Nucleus |
| True or false - spinal reflexes are broken up into each individual level. | False - spinal reflexes spread to multiple levels |
| The concept of _ involves branching of central or peripheral neurons so that _ must be lost in order to create anesthsia or cause paralysis | overlap, 3 |
Created by:
cherubicsiren
Popular Neuroscience sets