ANATOMY III - is.muni.cz...Nervous system is a complex, sophisticated system that regulates and...
Transcript of ANATOMY III - is.muni.cz...Nervous system is a complex, sophisticated system that regulates and...
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ANATOMY III
MUDr. Ivana Hradilová Svíženská, Ph.D.
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Lectures Seminars
1. Anatomy of the nervous system, Spinal nerve
Structure of the spinal cord Gross anatomy and structure of the spinal cord
2. Structure of the brain stem Gross anatomy and structure of the brain stem
3. Structure of the cerebellum and diencephalon Gross anatomy and structure of the cerebellum and
diencephalon
4. Structure of the telencephalon Gross anatomy and structure of the telencephalon
5. Meninges, ventricles and vascular system of the CNS
Cranial nerves 1
Meninges, ventricles and vascular system of the CNS
Cranial nerves 1
6. Cranial nerves 2, Cervical plexus
Intercostal nerves, Dorsal rami
Cranial nerves 2, Cervical plexus
Intercostal nerves, Dorsal rami
7. Autonomic nervous system Autonomic nervous system
8. Visual system Visual system
9. Regional anatomy of the head and neck Demonstration of topographical regions (head and neck)
10. Dissection course (head, neck)
11. Auditory system Auditory system
12. Regional anatomy of the body (except limbs) Demonstration of the topographical regions (except limbs)
13. Regional anatomy of the body (except limbs) Demonstration of the topographical regions (except limbs)
14. RTG anatomy RTG anatomy
15. Spare lectures
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Recommended literature:
Liebgott, Bernard. The anatomical basis of dentistry. 3rd ed. Mosby, ISBN 0-323-06807-3
Dubový, Petr. Gross anatomy and structure of the
human nervous system. Part I. Surface anatomy and
structural arrangement of the central nervous system. 3rd ed. Brno: Masarykova univerzita, 2016. 92 s. ISBN 978-80-210-6125-5
Dubový, Petr. Instructions for anatomical dissection course. 3rd ed. Brno: Masaryk University, 2013. 71 s. ISBN 9788021062023
Stingl, J. et al. Regional anatomy. 1st ed. Galén-Karolinum, 2012. 123s. ISBN 9788072628797
Atlas of Anatomy
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Equipment:
lab coat
dressing forceps
gloves
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Nervous system
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Nervous system ■ is a complex, sophisticated system that regulates
and coordinates activities of the body
■ regulates the body's responses to internal and
external stimuli
■ has three main functions, sensory input, integration
of data and motor output
■ is composed of excitable nerve cells
■ conducts nerve impulses
■ is divided into two categories: the central nervous
system- CNS and the peripheral nervous system -
PNS
■ the basic structural and functional unit - neuron
■ cells providing support and protection for neurons –
glial cells
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Neuron
■ receives stimuli
■ transforms stimuli to
nerve impulses
■ conducts nerve
impulses
■ processes information
■ transmits the electro-
chemical signal across a
synapse
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TYPES OF NEURONS
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Myelinization – node of Ranvier,
internodal segment
unmyelinated
axon
Schwann cell
axon
Schwann cell nucleus
Ranvier node
oligodendroglia Saltatory conduction
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Basic function of NS - reflex
Sensor
Effector
CNS
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Interneuron
Skin Muscle
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Development of NS
■ from ectoderm (under influence of the
notochord) arises the neural:
plate
groove
tube
+ neural crest
3.w i.u.
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Parts derived from the neural
tube brain
spinal cord
Parts derived from the neural
crest cranial nerve ganglia
dorsal root and autonomic ganglia
medulla of the suprarenal gland
some bones, cartilage and
connective tissue of the head
pigment cells ...
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Cerebral vesicles from the
rostral part of the neural tube
3. rhombencephalon
(hindbrain)
2. mesencephalon
(midbrain)
1. prosencephalon
(forebrain) Spinal cord
medulla spinalis
3. 2.
1.
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Secondary vesicles
myelencephalon medulla oblongata
metencephalon pons, cerebellum
mesencephalon midbrain
diencephalon diencephalon
telencephalon telencephalon
3. 2.
1.
3.
2.
1.
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B
dorsal root
ventral root
skin muscle
A
Spinal nerve
A
B
DRG
sulcus limitans
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Skeletal
muscles
Organs of
motions
Proprio-
receptors
Surface of
the body
Extero-
receptors
Viscera
Intero-
receptors
Senses
SENSOR EFFECTOR
CNS
PNS
Afferent Efferent
Glands
Smooth
muscles +
myocardium
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SENSOR EFFECTOR
Extero-
receptors
Proprio-
receptors CNS
Skeletal
muscles
Somato-
sensory
(SS)
Somato +
branchio-
motor (SM)
(BM)
Intero-
receptors
Viscero-
sensory
(VS)
Glands
Viscero-
motor
(VM) Senses Sensory
(S)
Smooth
muscles and
myocardium
Functional types of axons
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PNS
Cranial nerves III. - XII. (I.- XII.)
pass through the skull base
pass through the intervertebral
foramina
Spinal nerves - 31 pairs
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CNS
II. Spinal cord
■ medulla oblongata
■ pons
■ mesencephalon
■ cerebellum
■ diencephalon
■ telencephalon
I. Brain
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Structure of the CNS
Gray matter - nuclei
White matter – nerve tracts:
- tractus
- fasciculus (lemniscus)
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Spinal cord
■ transmission of neural
signals between the brain and
the periphery
■ contains neural circuits that
can control numerous reflexes
and central pattern generators
independently on the cortex
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MEDULLA
SPINALIS
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Cauda equina
Fila radicularia
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Intumescentia cervicalis
C5 – T1 segments
C4 – T1 vertebrae
Intumescentia lumbalis
L2 – S1 segments
T9 – T12 vertebrae
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Segment C1
Segment C5
Segment C8
Segment Th2
Segment Th10
Segment L1
Segment L4
Segment S4
Segment C5
Segment C8
Segment Th2
Segment L4
Segment S4
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SUBSTANTIA GRISEA – cornu anterius (columna anterior),
cornu posterius (columna posterior), cornu laterale (columna
lateralis), substantia intermedia, canalis centralis
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SUBSTANTIA ALBA – funiculus anterior, lateralis, posterior
fissura mediana ant., sulcus medianus post., septum medianum
posterius, sulcus anterolateralis, posterolateralis
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p. cervicalis p. thoracica p. sacralis
Dorsal horn
Ventral horn
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Dorsal root
Spinal
nerve
Ventral root
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Functional zones of
the spinal cord
GSA
GVA
GVE
GSE
Basal plate
Alar plate
Sulcus
limitans
Skeletal
muscles
Smoot
muscles,
glands
Intero
- receptors
Extero+ proprio
- receptors
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DORSAL HORN – afferent neurons SUBST. INTERMEDIA (lateral horn) motoneurons of the ANS VENTRAL HORN - motoneurons
Gray matter
CC FR
White matter Funiculus post.
(fasc. gracilis et cuneatus)
Funiculus ant.
Funiculus lat. F. anterolateralis
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T1 - L2 - preganglionic
sympathetic neurons
below L2 - preganglionic
parasympathetic neurons
Functional zones in the spinal cord
GSA
GVA
GSE
GVE
GVE zone
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Ventral root
Multipolar
cells
Ncl. intermedio-lat.
tr. co-sp
lat
tr. te
-sp
α, Ncll. motorii
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Radix dorsalis Pseudounipol. neurons of the
DRG
Ncl. posteromarginalis +
Subst. gelatinosa Rolandi
Ncl. proprius
Ncl. thoracicus
(Stilling-Clark.) Tr. spinocerebellaris post.
Tr. spinocerebellaris ant.
Tr. spino-olivaris
Tr. spino-thalamicus,
-reticularis, -tectalis
Ncl. intermediomedialis
Tr. spino-
bulbaris
Fasc. gracilis
Fasc. cuneatus
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ncl intermed-med
dorsal root
ncl proprius
ncl thoracicus
tr. sp-bulb
ncl apicalis
subst gel Rolandi
tr. co-sp lat
tr. te
-sp
ncl intermedio-lat
ncll motorii
ventral root
tr. sp-sp
GSA
GVA
GSE GVE
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Illustrations and photographs were copied from:
Atlas der Anatomie des Menschen/Sobotta.
Putz,R., und Pabst,R. 20. Auflage. München:
Urban & Schwarzenberg, 1993)