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FUNCTIONAL COMPONENTS || NUCLEI OF ALL CRANIAL NERVES || NEUROANATOMY BASICS
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Functional components have always knocked our wits off everytime we've tried to read and understand them.
But no more, here's a detailed video about functional components and nuclei of all cranial nerves and by the end of this video, you would've already covered 20% of EACH CRANIAL NERVE!
TIMESTAMPS:
00:00 - Introduction
00:14 - Outline of the video
00:28 - Development of CNS
01:52 - Brainstem v/s spinal cord
02:11 - Breakdown of functional components
03:31 - Functional components
06:38 - Nuclei of cranial nerves
10:39 - Summary of nuclei of cranial nerves
FOR FURTHER UPDATES
Our telegram channel :
EXCERPTS FROM THE VIDEO
The entire CNS develops from 'ectoderm'. The neural tube develops into brain and spinal cord.
The neural tube is made up of 3 layers:
1. Ependymal
2. Mantle
3. Marginal
Mantle further differentiates into alar lamina and basal lamina
Structures developed from alar lamina are sensory and those developed from basal lamina are motor.
In the spinal cord, alar lamina lies dorsally and basal lamina lies ventrally
In the brainstem, alar lamina assumes lateral position and basal lamina, medial.
Afferent: Sensory, towards the CNS
Efferent: Motor, away from the CNS
Somatic: To the skeletal muscles
Visceral: To the smooth muscles, cardiac muscles and glands
General: Cranial nerves + Spinal nerves
Special: Cranial nerves only
There are 7 functional components
GSA
SSA
GVA
SVA
GSE
GVE
SVE
Nuclei are collection of cell bodies in the CNS.
Nuclei of the cranial nerves are located in the brain stem.
CN 1 and 2 do not have nuclei in the midbrain
CN 3 & 4 originate from the midbrain
CN 5-8 originate from pons
CN 9,10,12 originate from the medulla oblongata
11th cranial nerve from the spino-medullary junction
THANK YOU FOR WATCHING!
#functionalcomponents #nucleiofcranialnerves #cranialnerves #dopamania #neuroanatomy
But no more, here's a detailed video about functional components and nuclei of all cranial nerves and by the end of this video, you would've already covered 20% of EACH CRANIAL NERVE!
TIMESTAMPS:
00:00 - Introduction
00:14 - Outline of the video
00:28 - Development of CNS
01:52 - Brainstem v/s spinal cord
02:11 - Breakdown of functional components
03:31 - Functional components
06:38 - Nuclei of cranial nerves
10:39 - Summary of nuclei of cranial nerves
FOR FURTHER UPDATES
Our telegram channel :
EXCERPTS FROM THE VIDEO
The entire CNS develops from 'ectoderm'. The neural tube develops into brain and spinal cord.
The neural tube is made up of 3 layers:
1. Ependymal
2. Mantle
3. Marginal
Mantle further differentiates into alar lamina and basal lamina
Structures developed from alar lamina are sensory and those developed from basal lamina are motor.
In the spinal cord, alar lamina lies dorsally and basal lamina lies ventrally
In the brainstem, alar lamina assumes lateral position and basal lamina, medial.
Afferent: Sensory, towards the CNS
Efferent: Motor, away from the CNS
Somatic: To the skeletal muscles
Visceral: To the smooth muscles, cardiac muscles and glands
General: Cranial nerves + Spinal nerves
Special: Cranial nerves only
There are 7 functional components
GSA
SSA
GVA
SVA
GSE
GVE
SVE
Nuclei are collection of cell bodies in the CNS.
Nuclei of the cranial nerves are located in the brain stem.
CN 1 and 2 do not have nuclei in the midbrain
CN 3 & 4 originate from the midbrain
CN 5-8 originate from pons
CN 9,10,12 originate from the medulla oblongata
11th cranial nerve from the spino-medullary junction
THANK YOU FOR WATCHING!
#functionalcomponents #nucleiofcranialnerves #cranialnerves #dopamania #neuroanatomy
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