SpinalCord Word Scramble
|
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
Question | Answer |
CNS is composed of: | The brain and spinal cord (SC) |
PNS is composed of: | Neural tissue outside of the CNS |
Functions of PNS | 1. Delivers sensory information to the CNS 2. Delivers motor commands to periphery skin, organs, muscle, joints, etc |
How many pairs of cranial nerves extend off of the brain? | 12 |
How many pairs of spinal nerves extend off of the spinal cord? | 31 |
Four components protecting the Spinal Cord | 1. Vertebrae 2. Adipose tissue and blood vessels 3. Cerebrospinal fluid 4. Meninges |
Where do spinal nerves ‘exit’ the spinal cord? | Intervertebral Foramen |
Disc | Between each vertebrae; acts as a shock absorber |
Spinal column (bone) outgrows spinal cord (CNS) at ___ years old | 4 |
Adult spinal cord ends at | L1 (conus medullaris) |
Cauda Equina begins at: | L1 (goes down from there) |
Dorsal and Ventral roots of ___-___ spinal nerves extend inferiorly in spinal column and look like a horse’s tail | L2-S5 |
Adipose tissue and blood vessels are located in: | Epidural space |
Cerebrospinal Fluid is located in: | Subarachnoid space and Central canal |
Meninges are: | Collagen and elastin coverings of spinal cord |
Functions of Meninges | 1. Protects from canal 2. Provides stability and shock absorption |
Layers of the Meninges: | [outside] Dura Mater, Arachnoid Mater, Pia Mater [inside] |
Dura Mater means: | ”Tough Mother” |
Dura Mater is the _______ layer | outermost |
Function of Dura Mater | Tethers spinal cord at the top and bottom of spinal canal |
Dura Mater blends with _________ at the top of the spinal cord and becomes continuous with ________. | Foramen Magnum Periosteum; Cranial Dura |
Dura Mater blends with _________ (which eventually blends with ________) at the bottom of the spinal cord | Coccygeal Ligament; Periosteum of Coccyx |
Flium Terminale | (Terminal Thread) Fibrous tissue at the base of the spinal cord (L1) that extends into the sacrum and eventually forms the coccygeal ligament (which eventually blends with coccyx periosteum) |
Arachnoid Mater means: | ”Spidery Mother” |
Arachnoid Mater is the _______ layer | Middle |
Arachnoid Mater is made up of: | Connective tissue that extends into underlying Pia Mater |
Subarachnoid Space contains: | Cerebrospinal Fluid and Blood Vessels |
Pia Mater means: | ”Delicate Mother” |
Pia Mater is the _______ layer | Innermost |
Pia Mater is made up of: | Connective tissue that is interwoven with above Arachnoid Mater and is firmly interwoven with underlying neural tissue (spinal cord) |
Pia Mater is connected to the Arachnoid Mater and Dura Mater by: | Denticulate Ligaments |
Denticulate Ligaments | Laterally extend from the Pia Mater to provide lateral stability (connect to the Arachnoid Mater and Dura Mater) |
Epidural Space | Space between Dura Mater and Vertebrae |
Subdural Space | Space between Dura Mater and underlying Arachnoid Mater |
Subarachnoid Space | Space between Arachnoid Mater and Pia Mater |
Lumbar Puncture (LP)/Spinal Tap | CSF is removed from Subarachnoid Space; can detect infections, inflammation, cancer |
LP/Spinal Tap removes CSF from: | Subarachnoid Space |
Spinal Anesthetic | Injection into Subarachnoid Space/CSF that causes ’local’ blockage of sensory and motor nerves (more diffuse anesthesia) |
Epidural Anesthetic | Injection into Epidural Space that causes local blockage of sensory (and some motor) nerves |
Which Anesthetic is Injected into the Subarachnoid Space? | Spinal Anesthetic |
Which Anesthetic is Injected into the Epidural Space? | Epidural Anesthetic |
Gray Matter is composed of: | Nuclei/cell bodies, Neuroglia, Unmyelinated axons |
Spinal Horns | ”H”-shaped gray matter in spinal cord |
Dorsal Horn | Dorsal/’posterior’ gray matter of the spinal cord |
Function of Dorsal Horn | Receives sensoty information from peripheral receptors (axons from Dorsal Roots synapse here) |
Dorsal Horn receives ______ information | Sensory |
Axons from Dorsal Roots synapse at the: | Dorsal Horn |
Dorsal Root | Axons from Dorsal Root Nuclei that come off of the Dorsal Horn |
Function of Dorsal Root | Afferent fibers that receive sensory information from periphery and send it to Dorsal Horn Nuclei in spinal cord [information in] |
Dorsal Root Ganglia | Cell bodies of sensory neurons |
Dorsal Root Ganglia have receptors in the ________ and synapse on cell bodies in _______. | Periphery; Dorsal Horn of spinal cord |
Ventral Horn | Ventral/’anterior’ gray matter of the spinal cord |
Function of Ventral Horn | Sends/Relays motor information to peripheral receptors |
Ventral Horn sends ________ information | Motor |
Axons from _______ synapse at the Ventral Horn | Ventral Roots |
Ventral Root | Axons from Ventral Horn Nuclei |
Function of Ventral Root | Efferent fibers that send/relay motor information to periphery to cause muscle movement, glandular secretions, etc |
Ventral Root Ganglia | Non-existant; Nuclei of motor fibers are in Ventral Horn of spinal cord |
Cell bodies of Ventral Root are in the: | Ventral Horn |
Cell body of sensory neurons is located in: | Dorsal Root Ganglia |
Cell body of motor neurons is located in: | Ventral Horn |
Visceral Region of Dorsal Horn | Sensory (afferent) input from organs |
Somatic Region of Dorsal Horn | Sensory (afferent) input from skin, muscles, joints |
Visceral Region of Ventral Horn | Motor (efferent) output to organs |
Somatic Region of Ventral Horn | Motor (efferent) output to skeletal muscles |
Some regions of spinal cord have a lateral horn that contains cell bodies of ______ and _____. | SNS and PSNS |
Spinal Nerves | Joining of Ventral and Dorsal Roots; Bundles of sensory and motor axons; Carry sensory and motor information |
Spinal Nerves Carry what Type of Information? | Sensory and Motor |
31 Pairs of Spinal Nerves Divided into: | 8 Cervical, 12 Thoracic, 5 Lumbar, 5 Sacral, 1 Coccygeal |
How many Cervical Nerves? | 8 |
How many Thoracic Nerves? | 12 |
How many Lumbar Nerves? | 5 |
How many Sacral Nerves? | 5 |
How many Coccygeal Nerves? | 1 |
The Spinal Nerves are part of the ____ Nervouse System | Peripheral |
White Matter | Outer section of Spinal Cord; Myelinated axon |
Tracts | Bundles of similar (size, speed, direction, information) CNS axons; sensory or motor, not mixed |
Can Tracts contain both sensory and motor nerves? | No, they cannot be mixed |
Ascending Tracts | Carry Sensory information to brain |
Descending Tracts | Carry Motor commands to spinal cord |
Columns | Groups of Tracts (anterior, posterior, and lateral locations in Spinal Cord) that are a combination of sensory and motor tracts |
Can Columns contain both sensory and motor Tracts? | Yes |
Plexus | Network of nerves that innervate specific areas |
Cervical Plexus Innervates: | Neck, Diaphragm |
Brachial Plexus Innervates: | Chest, Arms |
Lumbar Plexus Innervates: | Lower Torso, Legs |
Celiac (Solar) Plexus Innervates: | Stomach/Diaphragm |
Created by:
Cyndi1087
Popular Science sets