Pharyngeal pouch (embryology)

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Pharyngeal pouch
Sinus cervicalis
Floor of pharynx of human embryo about twenty-six days old.
Details
Carnegie stage	10
Identifiers
Latin	sacci pharyngei
TE	pouch (embryology)_by_E5.4.2.0.0.1.1 E5.4.2.0.0.1.1
FMA	293063
Anatomical terminology [edit on Wikidata ]

In the

• Contributes the
  palatine tonsils, supplied by the facial nerve
  .

• The third pouch possesses dorsal and ventral wings. Derivatives of the dorsal wings include the inferior parathyroid glands, while the ventral wings fuse to form the cytoreticular cells of the thymus. The main nerve supply to the derivatives of this pouch is cranial nerve IX, glossopharyngeal nerve.

Fourth pouch

Derivatives include:

• superior
  thyroid gland
  .
• Musculature and cartilage of larynx (along with the sixth pharyngeal arch).
• Nerve supplying these derivatives is Superior laryngeal nerve.

Fifth pouch

• Rudimentary structure, becomes part of the fourth pouch contributing to thyroid C-cells.^[1]

Sixth pouch

• The fourth and sixth pouches contribute to the formation of the musculature and cartilage of the larynx. Nerve supply is by the recurrent laryngeal nerve.

See also

• Pharyngeal arch (often called branchial arch although this is more specifically a fish structure)
• DiGeorge syndrome
• List of human cell types derived from the germ layers

References

External links

• UB, and UF) rrespiratory/korperhohlen01
  (Item #1 at Fig. 14)
• Embryology at Temple parch98/ARCHII97/sld017
• hednk-021—Embryo Images at University of North Carolina
• hednk-022—Embryo Images at University of North Carolina
• Outline at howard.edu (scroll down to "III. THE PHARYNGEAL POUCHES")