Neural - Cranial Nerve Development
|Embryology - 21 Mar 2018 Expand to Translate|
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- 1 Introduction
- 2 Some Recent Findings
- 3 Neural Development Overview
- 4 Embryonic Development
- 5 Motor and Sensory
- 6 CN I Olfactory
- 7 CN II Optic
- 8 CN III Oculomotor
- 9 CN IV Trochlear
- 10 CN V Trigeminal
- 11 CN VI Abducent
- 12 CN VII Facial
- 13 CN VIII Vestibulocochlear
- 14 CN IX Glossopharyngeal
- 15 CN X Vagus
- 16 CN XI Accessory
- 17 CN XII Hypoglossal
- 18 Neonatal - Clinical
- 19 Additional Images
- 20 References
- 21 Glossary Links
|The cranial nerves (ganglia) are represented by a roman numeral (I - XII) and many have additional historic names. They are paired, and can be mixed (motor/sensory), and the brain equivalent of the spinal cord spinal nerves.
In embryonic development, the trigeminal ganglia (CN V, historically the semilunar ganglion, Gasser's ganglion or Gasserian ganglion) is the first to become apparent and is the largest of the cranial nerves.
Neural development is one of the earliest systems to begin and the last to be completed after birth. This development generates the most complex structure within the embryo and the long time period of development means in utero insult during pregnancy may have consequences to development of the nervous system.
Differences between birds and mammals:
Neural development beginnings quite early, therefore also look at notes covering Week 3- neural tube and Week 4-early nervous system. Development of the neural crest and sensory systems (hearing/vision/smell) are only introduced in these notes and are covered in other notes sections.
|Cranial Nerve Links: Neural | Neural Crest | Placodes | Category:Cranial Nerve|
- Neural Parts: Introduction | Prosencephalon | Telencephalon | Amygdala | Hippocampus | Basal Ganglia | lateral ventricles | Diencephalon | Epithalamus | Thalamus | Hypothalamus | Pituitary | Pineal | third ventricle | Mesencephalon | Mesencephalon | Tectum | cerebral aqueduct | Rhombencephalon | Metencephalon | Pons | Cerebellum | Myelencephalon | Medulla Oblongata | Spinal Cord | Vascular | Meninges | Category:Neural
Some Recent Findings
|More recent papers|
This table shows an automated computer PubMed search using the listed sub-heading term.
References listed on the rest of the content page and the associated discussion page (listed under the publication year sub-headings) do include some editorial selection based upon both relevance and availability.
K J Low, K Stals, R Caswell, M Wakeling, J Clayton-Smith, A Donaldson, N Foulds, A Norman, M Splitt, K Urankar, K Vijayakumar, A Majumdar, Ddd Study, S Ellard, S F Smithson Phenotype of CNTNAP1: a study of patients demonstrating a specific severe congenital hypomyelinating neuropathy with survival beyond infancy. Eur. J. Hum. Genet.: 2018; PubMed 29511323
Ami Schattner, Shilo Voichanski, Livnat Uliel SLE presenting as demyelinative autoimmune visual loss. BMJ Case Rep: 2018, 2018; PubMed 29507012
Andrea R Yung, Noah R Druckenbrod, Jean-François Cloutier, Zhuhao Wu, Marc Tessier-Lavigne, Lisa V Goodrich Netrin-1 Confines Rhombic Lip-Derived Neurons to the CNS. Cell Rep: 2018, 22(7);1666-1680 PubMed 29444422
Melat Gebre, Anna Woodbury, Vitaly Napadow, Venkatagiri Krishnamurthy, Lisa C Krishnamurthy, Roman Sniecinski, Bruce Crosson Functional Magnetic Resonance Imaging Evaluation of Auricular Percutaneous Electrical Neural Field Stimulation for Fibromyalgia: Protocol for a Feasibility Study. JMIR Res Protoc: 2018, 7(2);e39 PubMed 29410385
Paolo Monticelli, Ella Fitzgerald, Jaime Viscasillas A sonographic investigation for the development of ultrasound-guided paravertebral brachial plexus block in dogs: cadaveric study. Vet Anaesth Analg: 2017; PubMed 29398529
Neural Development Overview
Neuralation begins at the trilaminar embryo with formation of the notochord and somites, both of which underly the ectoderm and do not contribute to the nervous system, but are involved with patterning its initial formation. The central portion of the ectoderm then forms the neural plate that folds to form the neural tube, that will eventually form the entire central nervous system.
- Early developmental sequence: Epiblast - Ectoderm - Neural Plate - Neural groove and Neural Crest - Neural Tube and Neural Crest
|Neural Tube||Primary Vesicles||Secondary Vesicles||Adult Structures|
|week 3||week 4||week 5||adult|
|Prosencephalon||Telencephalon||Rhinencephalon, Amygdala, Hippocampus, Cerebrum (Cortex), Hypothalamus, Pituitary | Basal Ganglia, lateral ventricles|
|Diencephalon||Epithalamus, Thalamus, Subthalamus, Pineal, third ventricle|
|Mesencephalon||Mesencephalon||Tectum, Cerebral peduncle, Pretectum, cerebral aqueduct|
|Cranial Nerve Development|
|stage 14||stage 16|
|Embryonic Central Nervous System|
|Stage 13||Stage 14||Stage 16||Stage 21|
scale bar = 1 mm
|Week 4||Week 5||Week 6||Week 8|
- Human CNS Images: Carnegie stage 13 | Carnegie stage 13 label | Carnegie stage 14 | Carnegie stage 14 label | Carnegie stage 16 | Carnegie stage 16 label | Carnegie stage 21 lateral | Carnegie stage 21 median | Fetus CRL 240mm | Neural System Development | Cranial Nerves
Motor and Sensory
|Cranial motor nerves brainstem nuclei of origin||Primary Terminal Nuclei of the Afferent (sensory) Cranial Nerves|
CN I Olfactory
Olfactory Nerve - Human fetus (Week 10)
- Links: Smell Development
CN II Optic
Optic Nerve - Human embryo (week 8, Carnegie stage 22)
- Links: Vision Development
CN III Oculomotor
motor - innervates muscles that enable most eye movement
development - oculomotor nerve is derived from the basal plate of the embryonic midbrain
|Mann IC. The developing third nerve nucleus in human embryos (1927) J Anat. 61(4): 424-438. PubMed 17104156|
CN IV Trochlear
motor - innervates the superior oblique muscle that enables eye movement
CN V Trigeminal
(semilunar ganglion, Gasser's ganglion or Gasserian ganglion)
three major branches - ophthalmic nerve (V1), maxillary nerve (V2), mandibular nerve (V3)
- sensory - provide tactile, proprioceptive, and nociceptive afference to the face and mouth.
- motor - innervate the skin of the face via ophthalmic (V1), maxillary (V2) and mandibular (V3) divisions. Special visceral efferent (SVE) axons innervate the muscles of mastication via the mandibular (V3) division.
In the embryo, the trigeminal ganglia is first visible in week 4 stage 10, initially developing from neural crest cells before neural fold fusion, and after fusion receive contributions from the neural tube roof plate.
In the adult, cavum trigeminale (Meckel's cave) is an arachnoidal pouch containing cerebrospinal fluid. Though the dura and arachnoid layers end at the trigeminal ganglion and do not extend to cover the three branches of the trigeminal nerve.
Gasser's ganglion or Gasserian ganglion
This historic terminology was given by Antonius Hirsh who described the ganglion in 1765 and then named the ganglion in the honour of his teacher, Johann Lorenz Gasser (1723-1765) an Austrian anatomist.
CN VI Abducent
motor - innervates the lateral rectus muscle that enables eye movement
development - from the basal plate of the embryonic pons
CN VII Facial
(N. Facialis; Seventh Nerve; CN VII)
Gray Fig. 788. Plan of the Facial and Intermediate Nerves and their Communication with Other Nerves
|The facial nerve (Figs. 788, 790) consists of a motor and a sensory part, the latter being frequently described under the name of the nervus intermedius (pars intermedii of Wrisberg) (Fig. 788). The two parts emerge at the lower border of the pons in the recess between the olive and the inferior peduncle, the motor part being the more medial, immediately to the lateral side of the sensory part is the acoustic nerve.|
Facial nerve development - right facial nerve and its nucleus of origin (A. 10 mm embryo, C. neonate).
CN VIII Vestibulocochlear
Cranial nerve eight (CN VIII) In the embryo, cells derive from the otic placode forming the otic vesicle (otocyst). Ganglion previously thought to also involve otic neural crest (rhombomere 4), but recent studies suggest an entirely placodal origin. In the adult, as in its name it consists of 2 parts vestibular (balance and position in space) and cochlear (hearing, spiral).
Embryo (week 5, Stage 13) showing inner ear and CNVIII.
Embryo (week 8, Stage 2) showing otocyst and CNVIII.
CN IX Glossopharyngeal
lies anterior to the medulla oblongata
Branchial motor (special visceral efferent) – supplies the stylopharyngeus muscle.
Visceral motor (general visceral efferent) – provides parasympathetic innervation of the parotid gland via the otic ganglion.
Visceral sensory (general visceral afferent) – carries visceral sensory information from the carotid sinus and carotid body.
General sensory (general somatic afferent) – provides general sensory information from inner surface of the tympanic membrane, upper pharynx (GVA), and the posterior one-third of the tongue.
Visceral afferent (special visceral afferent) – provides taste sensation from the posterior one-third of the tongue, including circumvallate papillae.
CN X Vagus
(pneumogastric nerve) responsible for heart rate, gastrointestinal peristalsis, sweating, and muscle movements in the mouth, including speech (via the recurrent laryngeal nerve)
- motor derived from the basal plate of the medulla oblongata
- sensory derived from cranial neural crest
CN XI Accessory
motor - innervates the sternocleidomastoid and trapezius muscles
- sternomastoid - muscle superficial layer side of the neck, rotation of the head
- trapezius - superficial muscles from occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula, move the scapulae and support the arm
CN XII Hypoglossal
Neonatal - Clinical
Examination of the baby’s cranial nerve function is often accomplished by observing spontaneous activity.
|Newborn - Cranial Nerves|
Mouse E10.5 Nav2 expression
|Historic Disclaimer - information about historic embryology pages|
|Embryology History | Historic Embryology Papers)|
- Kurosaka H, Trainor PA, Leroux-Berger M & Iulianella A. (2015). Cranial nerve development requires co-ordinated Shh and canonical Wnt signaling. PLoS ONE , 10, e0120821. PMID: 25799573 DOI.
- Sajgo S, Ali S, Popescu O & Badea TC. (2016). Dynamic expression of transcription factor Brn3b during mouse cranial nerve development. J. Comp. Neurol. , 524, 1033-61. PMID: 26356988 DOI.
- O'Rahilly R & Müller F. (2007). The development of the neural crest in the human. J. Anat. , 211, 335-51. PMID: 17848161 DOI.
- Kehrli P, Maillot C & Wolff MJ. (1997). Anatomy and embryology of the trigeminal nerve and its branches in the parasellar area. Neurol. Res. , 19, 57-65. PMID: 9090638
- Streeter GL. The nuclei of origin of the cranial nerves in the 10 mm human embryo. (1908) Amer. J Anat. 2:111 - 115.
- McNeill EM, Roos KP, Moechars D & Clagett-Dame M. (2010). Nav2 is necessary for cranial nerve development and blood pressure regulation. Neural Dev , 5, 6. PMID: 20184720 DOI.
Barlow LA. (2002). Cranial nerve development: placodal neurons ride the crest. Curr. Biol. , 12, R171-3. PMID: 11882306
Saitsu H & Shiota K. (2008). Involvement of the axially condensed tail bud mesenchyme in normal and abnormal human posterior neural tube development. Congenit Anom (Kyoto) , 48, 1-6. PMID: 18230116 DOI.
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Cite this page: Hill, M.A. (2018, March 21) Embryology Neural - Cranial Nerve Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Neural_-_Cranial_Nerve_Development
- © Dr Mark Hill 2018, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G