Study sets matching "reflexes spinal nerves"

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Study sets matching "reflexes spinal nerves"

18 terms
spinal nerves and spinal reflexes
spinal nerve components
first branch of the spinal n
dorsal ramus
cellular details of spinal nerves and…
dorsal root--dorsal root ganglion... ventral root... together they…
dorsal primary ramus... ventral primary ramus
goes to the back ... but small branches;
interneuron (entirely in the CNS )
spinal nerve components
dorsal root--dorsal root ganglion... ventral root... together they…
first branch of the spinal n
dorsal primary ramus... ventral primary ramus
53 terms
SPINAL CORD, SPINAL NERVES, AND REFLEXES
Gray Matter
White Matter
Conus Medullaris
Intervertebral Foramina
neuron cell bodies, unmyelinated axons, dendrites, and glia
myelinated neuron processes and glia
where the spinal cord ends in a cone-shaped region
where spinal nerves pass through
Gray Matter
neuron cell bodies, unmyelinated axons, dendrites, and glia
White Matter
myelinated neuron processes and glia
85 terms
Spinal Cord, Spinal Nerves, and Reflexes
what does the gray matter contain?
what does white matter contain?
where is the gray matter located in th…
where is the white matter located in t…
neuron cell bodies, unmyelinated axons, dendrites, and glia
myelinated neuron processes and glia
it deep regions in the center
superficial regions of the spinal cord
what does the gray matter contain?
neuron cell bodies, unmyelinated axons, dendrites, and glia
what does white matter contain?
myelinated neuron processes and glia
spinal cord, spinal nerves, and spinal reflexes
sensory (afferent)
input from the head and neck
sensory input
input
input from peripheral organs travels to the central nervous s…
enter directly via cranial nerves
other sensory input enters the spinal cord via spinal nerves
some input is conveyed along the spinal cord to the brain and…
sensory (afferent)
input from peripheral organs travels to the central nervous s…
input from the head and neck
enter directly via cranial nerves
36 terms
Nerves/Spinal Nerves/Reflexes
Nerves & structures (9)
location/function of cranial nerve
function/location of endoneurium
function/location of epineurium
cranial nerve, endoneurium, epineurium, fascicle, nerve, peri…
12 pairs of nerves in the brain; control various functions of…
a layer of delicate connective tissue around the myelin sheat…
limits stretching; PERIPHERAL NERVES
Nerves & structures (9)
cranial nerve, endoneurium, epineurium, fascicle, nerve, peri…
location/function of cranial nerve
12 pairs of nerves in the brain; control various functions of…
Spinal Nerves/Reflexes
Spinal Nerves
layers of Connective Tissue
General Pathway of Nerves
Reflexes
31 pairs of spinal nerves and each spinal nerve is formed fro…
A. Endoneurium- surrounds individual axons- made of elastic a…
1. Sensory information comes into Dorsal Root Ganglion. (unip…
Immediate involuntary motor response to a stimulus. Do not ta…
Spinal Nerves
31 pairs of spinal nerves and each spinal nerve is formed fro…
layers of Connective Tissue
A. Endoneurium- surrounds individual axons- made of elastic a…
41 terms
Spinal Cord, Spinal Nerves, & Reflexes
Tracts
Conus Medullaris
Cauda Equina
Cervical Enlargement
large bundles of axons which carry motor information and sens…
lower extremity of the spinal cord
bundles of spinal nerves and spinal nerve roots
Tracts
large bundles of axons which carry motor information and sens…
Conus Medullaris
lower extremity of the spinal cord
Spinal Nerves and Reflexes
Intervertebral foramina
MIxed
Anterior Root
Posterior Root
Where all of the spinal nerves pass through
All of the spinal nerves are
(After split) Carries axons of motor neurons that synapse in…
(After split) Carries axons of sensory neurons that synapse i…
Intervertebral foramina
Where all of the spinal nerves pass through
MIxed
All of the spinal nerves are
67 terms
Spinal Cord, Nerves, Reflexes
Ventral horn
Dorsal horn
Central canal
Primary sensory neurons
Sensory neurons that associate directly with peripheral recep…
Ventral horn
Dorsal horn
20 terms
Spinal Nerves and Reflexes
31, 8, 12, 5, 5, 1
below
above
nerve
there are ____ pairs of spinal nerves in the PNS. ___ cervica…
cervical spinal nerves are named for the vertebrae ____ them.
of spinal nerves other than cervical are named for the verteb…
a large bundle of axons in the PNS
31, 8, 12, 5, 5, 1
there are ____ pairs of spinal nerves in the PNS. ___ cervica…
below
cervical spinal nerves are named for the vertebrae ____ them.
30 terms
Spinal nerves and reflexes
Spinal nerves
dorsal ramus
ventral ramus
meningeal branch
31 pairs of nerves arising from the spinal cord; 8 cervical,…
innervates muscles and joints in that region of the spine and…
travel anteriorly to supply muscles of upper and lower limbs,…
This division of a spinal nerve reenters the vertebral cavity…
Spinal nerves
31 pairs of nerves arising from the spinal cord; 8 cervical,…
dorsal ramus
innervates muscles and joints in that region of the spine and…
40 terms
Spinal cord, spinal nerves and reflexes
functions of spinal cord
conduction
Neural integration
Locomotion
conduction, neural integration, locomotion, reflexes
one of the functions of the spinal cord that conducts info fr…
spinal neurons receives info, combines info with other info c…
central pattern generations coordinate movement in spinal cor…
functions of spinal cord
conduction, neural integration, locomotion, reflexes
conduction
one of the functions of the spinal cord that conducts info fr…
Spinal nerves and somatic reflexes
PNS
Ganglia
Motor or Efferents division
Sensory or afferent division
all nervous tissue outside of the CNS, includes cranial and s…
clusters of cell bodies in PNS
which innervates muscle cells and glands
which innervates the skin, joints, special sensory organs, an…
PNS
all nervous tissue outside of the CNS, includes cranial and s…
Ganglia
clusters of cell bodies in PNS
28 terms
Spinal Cord & Spinal Nerves (and reflexes!)
Spinal cord
Cuada Equina
Filum Terminale
Conus Medullaris
Part of CNS, inside vertebrae, ends at L2
"Horses tail", Nerves the come at end of spinal cord.
Anchors spinal cord to coax.
Cone at end of spinal cord.
Spinal cord
Part of CNS, inside vertebrae, ends at L2
Cuada Equina
"Horses tail", Nerves the come at end of spinal cord.
47 terms
Spinal cord, nerves and reflexes
Spinal cord is divided into right and…
Segments
Diagram of spinal cord
Meninges
anterior median fissure= deep groove... posterior median sulcus…
(S.C) (V.C)... C- 8 C-7... T- 12 T- 12... L- 5 L- 5... S- 5 S- 5... C- 1 C-1…
Specialized membranes isolate brain and spinal cord from surr…
Spinal cord is divided into right and…
anterior median fissure= deep groove... posterior median sulcus…
Segments
(S.C) (V.C)... C- 8 C-7... T- 12 T- 12... L- 5 L- 5... S- 5 S- 5... C- 1 C-1…
70 terms
Spinal Cord, Spinal Nerves, And Reflexes
Neural Tube of Embryo
Gray Matter
White Matter
tracts
Gives rise to brain and spinal cord. anterior end enlarges an…
Neural cell bodies, unmyelinated axons, dendrites, and glia.…
Myelinated neuron processes and glia. Located in superficial…
large bundles of axons which carry motor function and sensory…
Neural Tube of Embryo
Gives rise to brain and spinal cord. anterior end enlarges an…
Gray Matter
Neural cell bodies, unmyelinated axons, dendrites, and glia.…
47 terms
Spinal Cord, Nerves, and Reflexes
Conus Medullaris
Filum Terminale
Cauda Equina
Dura Mater
Terminates at the L1/2 vertebral level
helps anchor the spinal cord
L2 - S5 Segments
outer layer of spinal cord
Conus Medullaris
Terminates at the L1/2 vertebral level
Filum Terminale
helps anchor the spinal cord
16 terms
The spinal cord, spinal nerves, and spinal reflexes
Describe the meninges and spaces surro…
describe the structure and location of…
describe the spinal cord in cross sect…
define the following terms: gray commi…
...
extends from the foramen magnum to level of the first or seco…
From front to back two grooves mark the surface. The dorsal m…
-Gray commisure, joins the horns. ... -Central canal runs the le…
Describe the meninges and spaces surro…
...
describe the structure and location of…
extends from the foramen magnum to level of the first or seco…
65 terms
Spinal Cord, Spinal Nerves, And Reflexes
Neural Tube of Embryo
Gray Matter
White Matter
tracts
Gives rise to brain and spinal cord. anterior end enlarges an…
Neural cell bodies, unmyelinated axons, dendrites, and glia.…
Myelinated neuron processes and glia. Located in superficial…
large bundles of axons which carry motor function and sensory…
Neural Tube of Embryo
Gives rise to brain and spinal cord. anterior end enlarges an…
Gray Matter
Neural cell bodies, unmyelinated axons, dendrites, and glia.…
Spinal Cord, Nerves and Reflexes
White matter
Gray matter
Conus medullaris
Cauda equina
White matter
Gray matter
31 terms
Spinal Nerves, Plexuses, and Reflexes
Cervical Plexus
Brachial Plexus
Lumbar Plexus
Sacral Plexus
C1-C5
C5-C8, T1
L1-L4
L4, L5, S1-S4
Cervical Plexus
C1-C5
Brachial Plexus
C5-C8, T1
21 terms
SPINAL CORD, SPINAL NERVES, REFLEXES
anterior horns of gray mater
posterior horns of gray mater
lateral horn of gray mater
posterior column of white mater
anterior horns of gray mater
posterior horns of gray mater
Spinal Cord, Spinal Nerves, and Reflexes: Spinal Nerves
Spinal nerves
Intervetrebral Formina
What are all of the spinal nerves, con…
Anterior Root
communicate between spinal cord and body
where each of the 31 pairs of spinal nerves passes through fr…
Mixed nerves
of each spinal nerves carries axons of efferent neurons whose…
Spinal nerves
communicate between spinal cord and body
Intervetrebral Formina
where each of the 31 pairs of spinal nerves passes through fr…
13 terms
Spinal Cord, Spinal Nerves, and Reflexes: Spinal Nerves
Whats special about spinal reflexes?
Gray Matter
What types of signals enter through th…
What types of signals leave through th…
rapid response to stimuli without having to pass into or out…
of the spinal cord can also coordinate involuntary spinal ref…
Afferent
Efferent
Whats special about spinal reflexes?
rapid response to stimuli without having to pass into or out…
Gray Matter
of the spinal cord can also coordinate involuntary spinal ref…
76 terms
spinal cord, spinal nerves, & reflexes
spinal cord shape
spinal cord extension
spinal enlargements
what 2 grooves divide the cord into ri…
cylindrical ... -flattened slightly
medulla to L2
-cervical: upper limbs C4-T1... -lumbar: lower limbs T9-T12
-anterior median fissure (deep)... -posterior median sulcus (sha…
spinal cord shape
cylindrical ... -flattened slightly
spinal cord extension
medulla to L2
38 terms
spinal cord, spinal nerves, and reflexes
conus medullaris
spinal nerves
Cervical enlargements
Lumbar enlargements
the ending of the spinal cord
there are 31 pairs, carry motor (efferent) and sensory (affer…
corresponds with the attachments of the large nerves which su…
widened area of the spinal cord that gives attachment to the…
conus medullaris
the ending of the spinal cord
spinal nerves
there are 31 pairs, carry motor (efferent) and sensory (affer…
Spinal Cord, Spinal Nerves, and Reflexes
Large bundles of axons.
Cone-shaped end of the Spinal Cord. Fo…
Group of nerves running from the lower…
Anterior Horns of Gray Matter
Tracts
Conus Medullaris
Cauda Equina
Large bundles of axons.
Tracts
Cone-shaped end of the Spinal Cord. Fo…
Conus Medullaris
Spinal Cord/Nerves/Reflexes
Primary sensory neurons
Secondary sensory neurons
Tertiary sensory neurons
Lower motor neurons
-associated directly with the peripheral receptors ... -cell bod…
-cell bodies located in dorsal horn of spinal cord and dorsal…
-cell bodies in thalamus... -axons project to brain's sensory co…
-axon innervates skeletal muscle... -cell body is in the ventral…
Primary sensory neurons
-associated directly with the peripheral receptors ... -cell bod…
Secondary sensory neurons
-cell bodies located in dorsal horn of spinal cord and dorsal…
70 terms
Spinal Cord, Spinal Nerves and Spinal Reflexes
central nervous system
sensory receptors
effectors
spinal cord dimentions
a system containing the brain, spinal cord, spinal nerves and…
stimuli receivers that send messages to the brain or spinal c…
muscles, glands or adipose tissue that respond (move/ secrete…
length: ~45cm (18 in)... width: ~14mm (0.55 in)
central nervous system
a system containing the brain, spinal cord, spinal nerves and…
sensory receptors
stimuli receivers that send messages to the brain or spinal c…
43 terms
Spinal Nerves and Reflexes
Motor/Efferent Division
Sensory/Afferent Division
CNS
PNS
innervates muscle cells and glands
innervates the skin, joints, special sensory organs, and othe…
contains brain and spinal cord
contains somatic and autonomic nervous system
Motor/Efferent Division
innervates muscle cells and glands
Sensory/Afferent Division
innervates the skin, joints, special sensory organs, and othe…
93 terms
spinal nerves and reflexes
phrenic nerve
axillary nerve
musculocutaneous nerve
median nerve
- located in the cervical plexus... - serves the diaphragm ... - da…
- located in the brachial plexus... - serves the armpit; teres m…
- located in the brachial plexus... - serves the flexor muscles…
- located in the brachial plexus ... - serves the flexor muscles…
phrenic nerve
- located in the cervical plexus... - serves the diaphragm ... - da…
axillary nerve
- located in the brachial plexus... - serves the armpit; teres m…
Spinal Cord, Spinal Nerves, and Reflexes
Gray Matter
White Matter
Tracts
Ascending Tracts
Neuron call bodies, unmyelinated axons, dendrites, and glia
Myelinated neurons processes and glia
Groups of axons with the same origin, terminus, and function
Carry sensory information from a lower level of the spinal co…
Gray Matter
Neuron call bodies, unmyelinated axons, dendrites, and glia
White Matter
Myelinated neurons processes and glia
spinal nerves/reflexes
spinal cord
cauda equana
enlargements
cervical enlargement
long tube of nervous tissue that runs from the base of the br…
consists of the nerves that function below the spinal cord in…
two thicker regions on the spinal cord
collection of nerves that supply the upper limbs... located betw…
spinal cord
long tube of nervous tissue that runs from the base of the br…
cauda equana
consists of the nerves that function below the spinal cord in…
Spinal Cord, Spinal Nerves, and Reflexes
Gray matter
White matter
Tracts
Spinal reflexes
...
...
...
...
Gray matter
...
White matter
...
59 terms
Spinal Cords, Spinal Nerves, and Reflexes
Nerve Fibers
Myelin Sheath
Endoneurium
Perineurium
Think of the axon
Nerve Fibers
Think of the axon
Myelin Sheath
19 terms
Spinal Cord, Nerves, Reflexes
dorsal horn
ventral horn
lateral horn
dorsal roots
somatic and visceral sensory nuclei
somatic motor neurons
visceral motor neurons
contains the axons of the sensory neurons in the dorsal root…
dorsal horn
somatic and visceral sensory nuclei
ventral horn
somatic motor neurons
Spinal Cord, Spinal Nerves, and Reflexes
Large bundles of axons.
Cone-shaped end of the Spinal Cord. Fo…
Group of nerves running from the lower…
Anterior Horns of Gray Matter
Tracts
Conus Medullaris
Cauda Equina
Large bundles of axons.
Tracts
Cone-shaped end of the Spinal Cord. Fo…
Conus Medullaris
12 terms
Spinal cord, nerves, & reflexes
spinal cord is continuos w/
enlargements of the Spinal cord
cervical enlargement supplies nerves to
lumbar enlargement supplies nerves to
brain
cervical & lumbar
shoulder and arms
pelvis & legs
spinal cord is continuos w/
brain
enlargements of the Spinal cord
cervical & lumbar
39 terms
Spinal Cord, Nerves and Reflexes
Epidural space
dural sheath
arachnoid mater
subarachnoid space
Epidural space
dural sheath
28 terms
spinal cord/reflexes/nerves
functions of the spinal nerves/cord
protection of the spinal cord
epidural space
dura mater
A. Spinal nerves: carries sensory information to and motor in…
-veterbral column... -meninges: 3 layered connective tissue cove…
between the vertebrae and dura mater, cushion of fat and CT
most superficial, dense irregular tissue
functions of the spinal nerves/cord
A. Spinal nerves: carries sensory information to and motor in…
protection of the spinal cord
-veterbral column... -meninges: 3 layered connective tissue cove…
48 terms
Reflexes and Spinal Nerves
dorsal root ganglion
primary sensory
pseudounipolar (neurons)
dorsal horn of the spinal cord and dor…
cell bodies of primary sensory neurons are located in the ___…
__________ neurons are associated with various types of recep…
primary sensory neurons are, morphologically, __________. The…
Secondary sensory neurons have their cell bodies located in t…
dorsal root ganglion
cell bodies of primary sensory neurons are located in the ___…
primary sensory
__________ neurons are associated with various types of recep…
27 terms
The Spinal cord, Spinal Nerves and Reflexes
1. Integration
2. Highway
3. Spinal cord
Meninges
summation of inhibitory and excitatory nerve impulses GREY MA…
for upward sensory and downward for motor travel of informati…
spinal cord reflexes
3 coverings around the brain and spinal cord
1. Integration
summation of inhibitory and excitatory nerve impulses GREY MA…
2. Highway
for upward sensory and downward for motor travel of informati…
spinal cord/nerves/reflexes
vertebral canal anterior boundary
vertebral canal posterior boundary
vertebral canal lateral boundaries
vertebral canal contents
vertebral bodies... intervertebral discs... posterior longitudinal…
laminae... ligamentum flava
pedicles... intervertebral foramina
blood vessels... epidural fat... CSF... spinal cord (grey and white ma…
vertebral canal anterior boundary
vertebral bodies... intervertebral discs... posterior longitudinal…
vertebral canal posterior boundary
laminae... ligamentum flava
Spinal nerves and reflexes
Adult spinal cord ends at L1 and L2
Ventral root
Spinal nerve
Dermatome
ends at?
motor commands leave cord
mixed fibers
region of skin monitored by single spinal nerve
Adult spinal cord ends at L1 and L2
ends at?
Ventral root
motor commands leave cord
72 terms
spinal nerves and reflexes
cervical spinal nerves
sacral spinal nerves
epineurium
nerve fascicle
located in C1-C8. Innervates the neck and scalp. All are mixe…
These nerves (five pairs) supply the thighs and lower parts o…
Dense connective tissue that surrounds entire nerve including…
bundle of myelinated axons (PNS)
cervical spinal nerves
located in C1-C8. Innervates the neck and scalp. All are mixe…
sacral spinal nerves
These nerves (five pairs) supply the thighs and lower parts o…
16 terms
Spinal nerves and reflexes
Location of Cervical Plexus
Location of Brachial Plexus
Location of Lumbar Plexus
Location of Sacral Plexus
C1-C4
C5-T1
L1-L4... Some T12
L4-S4
Location of Cervical Plexus
C1-C4
Location of Brachial Plexus
C5-T1
77 terms
Spinal Cord/Nerves/Reflexes
spinal cord
cervical and lumbar
conus medullaris
filum terminale
an association and communication center extending from forame…
enlargement areas in spinal cord
arachnoid covering extends to the ____
fibrous extension of pia mater that extends to the coccyx
spinal cord
an association and communication center extending from forame…
cervical and lumbar
enlargement areas in spinal cord
82 terms
Spinal Cord, Nerves, and Reflexes
Primary Sensory Neurons
Primary Sensory Neurons
Secondary Sensory Neurons
Secondary Sensory Neurons
Associated with peripheral receptors and pseudounipolar axons…
Neurons with cell bodies located in ganglia outside the CNS
Neurons with cell bodies located in dorsal horn of spinal cor…
Neurons where axons cross midline and project to thalamus
Primary Sensory Neurons
Associated with peripheral receptors and pseudounipolar axons…
Primary Sensory Neurons
Neurons with cell bodies located in ganglia outside the CNS
19 terms
Spinal nerves, Plexuses and Reflexes
spinal nerves
dorsal root
dorsal root ganglia
ventral root
31 pairs, 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 cocc…
fans into dorsal rootlets to connect to posterior spinal cord…
bulge on dorsal root, contains cell bodies of sensory neurons
formed by ventral rootlets connected to anterior spinal cord,…
spinal nerves
31 pairs, 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 cocc…
dorsal root
fans into dorsal rootlets to connect to posterior spinal cord…
22 terms
Spinal Cord, spinal Nerves, and reflexes
Spinal cord
spinal reflexes
Gray matter
spinal nerves
Belongs to the CNS. Located in the spinal cavity of the verte…
Example Knee jerk. Necessary for adaptive motor control. Musc…
_________ is a major component of the central nervous system,…
The term ______ generally refers to a mixed spinal nerve, whi…
Spinal cord
Belongs to the CNS. Located in the spinal cavity of the verte…
spinal reflexes
Example Knee jerk. Necessary for adaptive motor control. Musc…
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