Count Bobula Spinal Cord Lecture
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Where does the spinal cord begin and end? | show 🗑
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| show | medulla oblongata
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| show | C5 to T1
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| Cervical enlargement gives rise to what? | show 🗑
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| show | innervate upper limb
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| What segment of spinal cord extends from L1 to S3 | show 🗑
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| What rises from the lumbosacral enlargement? | show 🗑
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| The three terminating structures of the spinal cord are what? | show 🗑
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| show | Filum Terminale
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| Which spinal nerves are part of the Cauda Equina? | show 🗑
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| show | 8th
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| What is the alignment of spinal cord segments and verterbrae prior to the 8th week | show 🗑
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| show | 3rd month. inferior end lies at progressively higher vertebral levels
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| show | 6 months = S1
birth = L3
Adult = L1/L2
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| How do the spinal roots elongate to maintain innervation? | show 🗑
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| What are the three meninges of the spinal cord? | show 🗑
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| The loose sac, _____, around spinal cord and cauda equina that is continuous with _______ of the brain. | show 🗑
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| show | blindly at S2
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| Where is the Filum terminale internum? | show 🗑
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| Where is filum terminale externum? What covers it? | show 🗑
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| Where is the coccygeal ligament? | show 🗑
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| What is between dura mater and vertebrae? | show 🗑
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| What is in the epidural space? | show 🗑
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| Where is the internal vertebral venous plexus? | show 🗑
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| show | connective tissue covering of a nerve
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| where to the dura mater and epineurium meet? | show 🗑
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| show | delicate membrane that lines the internal surface of the dura mater
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| What is the beginning and ending of the arachnoid? | show 🗑
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| show | potential space between dura mater and arachnoid
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| show | real space between arachnoid and pia mater
Continous with sub of brain and extend to S2, also go in spinal nerve root sleeves
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| What is in the subarachnoid space? | show 🗑
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| show | Lumbar cistern
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| show | subarachnoid space inferior to conus medullaris
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| Where should you stick the ho for a lumbar puncture? | show 🗑
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| show | Pia Mater
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| show | continuous with pia mater of medulla oblongata
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| What other structure in the spinal cord rises from pia mater? | show 🗑
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| What stabilizes the spinal cord in the coronal plane? | show 🗑
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| Where can denticulate ligament be found? | show 🗑
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| What is the denticulate projections relationship with the arachnoid? | show 🗑
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| show | Anterior Median Fissure
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| What is the shallow groove along the posterior midline? | show 🗑
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| show | anterolateral sulcus
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| show | posterolateral sulcus
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| show | Posterior intermediate sulcus
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| show | posterior intermediate sulcus
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| show | Anterior (ventral) and Posterior (dorsal) roots
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| show | ventral, motor fibers carrying information away from spinal cord,
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| Afferent fibers are what type, which direction? | show 🗑
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| show | a ganglion that contains the cell bodies of the sensory neurons - posterior root ganglion
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| Why are spinal nerves called mixed? | show 🗑
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| Which spinal nerve ramus is smaller? What does it innervate? | show 🗑
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| Which spinal nerve ramus is larger? what does it innervate? | show 🗑
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| How many pairs of spinal nerves exist? Break them down: | show 🗑
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| show | C1-C7: superior to the vertebra
C8: between C7 and T1
T1 down: inferior to the vertebra
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| show | narrow cavity in center of cord that communicates with the ventricular system of brain
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| show | lined by ependymal cells, it communicates with the fourth ventricle
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| show | gray matter centrally located, white mater on periphery
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| Which matter has a butterfly or H shape? | show 🗑
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| show | posterior horn, anterior horn, intermediate zone, lateral horn
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| show | thoracic and upper lumbar
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| How is the gray matter constructed? What is the formal name? | show 🗑
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| show | laminae I to VI
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| show | lamina VII
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| show | part of VII plus VIII and IX
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| What layer fit Around central canal? | show 🗑
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| show | carried by sensory fibers through the dorsal roots to the neurons in the posterior horn then axons ascend to white matter in neuraxis
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| Where is the marginal nucleus? What lamina is it? | show 🗑
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| Lamina II makes up what? | show 🗑
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| Laminae III and IV form what? | show 🗑
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| In what special regions or segments are the posterior horn nuclei found? | show 🗑
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| show | voluntary movements
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| Where do the axons travel from neurons located in the anterior horn? | show 🗑
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| show | somatic motor neurons
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| What supply extrafusal muscle fibers | show 🗑
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| What supply intrafusal muscle fibers (where)? | show 🗑
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| What is an extrafusal muscle fiber? | show 🗑
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| What makes up a motor unit? | show 🗑
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| show | These fibers are a proprioceptor that detect the amount and rate of change of length in a muscle.
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| show | medial motor column and lateral motor column
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| show | lateral column in cervical and lumbosacral enlargements
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| What does the medial motor neurons innervate? where is it found? | show 🗑
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| show | leaves via C3-C5, innervates diaphragm via phrenic nerve
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| show | Accessory nucleus
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| show | Intermediate zone
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| What is the purpose of the intermediate zone | show 🗑
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| show | Nucleus of Clarke/nucleus dorsalis/thoracic nucleus
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| What segments are nucleus of Clarke | show 🗑
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| show | ascend in white matter to cerebellum in posterior spinocerebellar tract
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| What forms the lateral horn? Segments? | show 🗑
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| show | S2-S4 preganglionic parasympathetic neurons
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| What are the three regions in which white matter is found in the spinal cord? | show 🗑
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| show | between posterior median sulcus and posterolateral sulcus
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| what are the boundaries of the ventral funiculus? | show 🗑
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| show | between posterolateral and anterolateral sulci
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| show | long ascending and descending tracts that interconnect the spinal cord to the brain
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| show | propriospinal (intersegmental) fibers
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| Where are propriospinal (intersegmental) fibers found? | show 🗑
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| Why are propriospinal fibers important? | show 🗑
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| show | Anterior White commissure
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| show | contains fibers that cross from one side of the cord to the other - ALL pain and temperature sensation must travel through it
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| What part of white matter do all pain and temperature signals travel through? | show 🗑
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| show | posterolateral tract, dorsolateral fasciculus
lies between apex of posterior horn and spinal cord surface
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| show | dorsal fasciculus of Lissauer
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| How does the dorsal fasciculus of Lissauer disseminate information? | show 🗑
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| What sensory modalities are carried by the ascending tracts of spinal cord? | show 🗑
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| The posterior column has two parts. What are they? | show 🗑
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| show | info from lower half of body: discriminative touch, vibration, limp position and motion
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| How far does f. gracilus info go up? | show 🗑
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| show | info. from upper half of body - T6 and up - also discriminative touch, vibration, limb position
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| show | spinothalmic tract lies lateral and anterior to anterior horn
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| What is the very thin, skin like layer around the spinal cord that carries proprioceptive and tactile information to cerebellum | show 🗑
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| Where at the anterior and posterior spinocerebellar tracts located? | show 🗑
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| show | Look at name. They go from cortex to spine...thus descending tracts
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| Where is the most important descending tract that carries 90% of the information | show 🗑
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| Where is the anterior corticospinal tract? | show 🗑
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| What tract starts at the red nucleus in the brain then enters the spinal cord | show 🗑
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| show | lateral funiculus, just anterior to lateral corticospinal tract
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| show | control of muscle tone, especially limb flexor muscles (excitatory)
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| show | Lateral vestibulospinal tract
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| show | starts in lateral vestibular nucleus, runs in anterior funiculus close to surface
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| where does the medial vestibulospinal tract start and run? | show 🗑
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| show | 1. only in cervical region
2. controls head and neck position
3. travels as part of bidirectional path, the medial longitudinal fasciculus
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| What tract starts at the pons? path? | show 🗑
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| where does lateral reticulospinal tract begin and run? | show 🗑
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| show | muscle tone; pontine (excitatory);medullary (inhibitory)
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Created by:
El Diablo
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