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Head and Neck Embryology
Unit 3
24
Medical
Professional
10/11/2011

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Cards

Term
First Arch (Neural Crest)
Definition
Meckels crest; forms mandible, incus and malleus
Term
Second Arch (Neural Crest)
Definition
Reichert cartilage; forms stapes and styloid process of temporal bone and superior portion of hyoid bone
Term
Third Arch (Neural Crest)
Definition
Inferior body of the hyoid bone
Term
4th/6th Arches (Neural Crest)
Definition
Laryngeal cartilages: thyroid and cricoid
Term
First Arch (Mesoderm)
Definition
muscles of mastication
Term
Second arch (Mesoderm)
Definition
muscles of facial expression
Term
Third Arch (Mesoderm)
Definition
stylopharyngeous
Term
4th/6th Arches (Mesoderm)
Definition
pharyngeal, laryngeal, and esophogeal striated muscle
Term
Trigeminal Nerve
Definition
First Arch-motor muscles of mastication anterior digastric, sensory-face teeth anterior tongue palate
Term
Facial Nerve
Definition
Second Arch; motor-facial expression posterior digastric; sensory-taste innervation anterior tongue
Term
Glossopharyngeal Nerve
Definition
Third arch; motor-stylopharyngeous;sensory-posterior tongue epithelium (taste)
Term
Vagus Nerve
Definition
4th/6th arch; motor-pharynx,larynx; sensory-pharynx, larynx, esophagus
Term
1st Pouch (Derivatives)
Definition
Auditory meatus, tympanum, middle ear cavity
Term
2nd Pouch (Derivatives)
Definition
Palatine tonsil, thyroid gland
Term
3rd pouch (Derivatives)
Definition
inferior parathyroid glands, thymus, ultimobranchial bodies
Term
Anterior 2/3 of tongue
Definition
1st arch; CN 5-sensory; CN 7-taste
Term
Posterior 1/3 of tongue
Definition
3rd-4th arch; sensory-9,10; taste-9
Term
Tongue musculature
Definition
motor- CN 7
Term
Neural Tube segmentation
Definition
rhombomeres 1/2 = 1st arch; 4 = 2nd arch; 6 = 3rd arch; 7 = 4th arch
Term
1st arch (name)
Definition
Mandibular arch
Term
Second arch (Name)
Definition
Hyoid
Term
3rd, 4th, 6th Arches (Name)
Definition
pharyngeal arches
Term
Five facial primordia
Definition
maxillary (2), mandibular (2), frontonasal process (1)
Term
mesenchyme (components)
Definition
neural crest and mesoderm
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