Embryo- Primitive Pharynx & tongue

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Pharyngeal/Branchial Cleft is derived from the...

ectoderm
Pharyngeal Arches are derived from the...
- Mesoderm
- Neural Crest Cells
Pharyngeal Pouches are derived from

Endoderm
Pharyngeal Pouch #1 => (2)
- Tympanic Cavity
- Auditory Tube (middle ear)
Pharyngeal Pouch #2 => (1)

Tonsillar Fossa
Pharyngeal Pouch #3 => (2)
- Parathyroid
- Thymus
Pharyngeal Pouch #4 => (2)
- Parathyroid
- Ultimobranchial Body (=> parafollicular cells)
Thyroid follicles are derived from...

endoderm (floor of pharynx) *
Thyroid CT components are derived from...

Mesoderm
Development of thyroid:
___-> ____

Thyroid Duct -> Thyroglossal Duct
Remnant of the thyroglossal duct:

Foramen Cecum of the tongue
Muscles of mastication develop from which pharyngeal structure?

First Pharyngeal Arch
Digastricus is develop from which pharyngeal structures?

First and Second Pharyngeal Arches
Innervation to pharyngeal Arches:
1st=
2nd=
3rd=
4th=
- 1st= 5
- 2nd=7
- 3rd= 9
- 4th= 10
1st Pharyngeal Cleft =>

External Acoustic Meatus
Clefts 2, 3 and 4 =>

cervical Sinus (regresses)
Skeletal Components of the Pharyngeal Arches are derived from ___

Neural Crest Cells (Neural Ectoderm)
Rostral 2/3 of tongue develops from which pharyngeal structure

1st Pharyngeal ARCH
Caudal 1/3 of the tongue develops from what structures...
- Hypobrachial Eminence
- Pharyngeal Arch 2,3 & 4
The body of the tongue is derived from ___

stomodeal ectoderm
Striated mm of the tongue, develops from...

occipital somites
The tongue is innervated by:
- 5 (trigeminal)
- 7 (Facial)
- 9 (glossopharyngeal)
- 12 (hypoglossal)

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Author

HLW

52690

Card Set

Embryo- Primitive Pharynx & tongue

Description

Embryo- Primitive Pharynx & Dev of thyroid/tongue

Updated

2010-12-06T14:46:37Z

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