pharyngeal apparatus

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pharyngeal arches

1. obliquely disposed, rounded ridges on either side of the head and neck of human embryos during the fourth and fifth gestational weeks, which contribute to formation of the face and neck.
2. aggregate of the pharyngeal arches, pouches, grooves, and membranes seen in the developing embryo of vertebrates.

pha·ryn·ge·al ap·pa·ra·tus

(făr-in'jē-ăl ap'ă-rat'ŭs)
The aggregate of pharyngeal arches, pouches, grooves, and membranes present in early embryos.
Synonym(s): branchial apparatus.
References in periodicals archive ?
Imaging of congenital anomalies of the branchial apparatus. Neuroimaging Clin N Am.
Second branchial apparatus cysts are the most common and account for up to 95% of all branchial apparatus anomalies.
The second theory suggests that the cysts are derived from the remnant of branchial apparatus. (7) Because the dorsal portion of (2) nd branchial pouch blends with first pouch there is still controversy regarding which pouch contributes to the nasopharyngeal branchial cyst.
FIRST BRANCHIAL CLEFT CYSTS: First branchial apparatus anomalies account for 5 % to 8 % of all branchial anomalies are usually in the form of a cyst or sinus (4).
Intraoperative fistulograms in the management of branchial apparatus abnormalities in children.
Nonetheless, a general understanding is evident regarding how the components of the head and neck anatomy are derived from the branchial apparatus. As with all anatomy, many variations from the textbook norm are possible, and small alterations in a complex process can lead to unusual abnormalities.
Cysts, fistulas, and sinuses of the second branchial cleft are the most common developmental anomalies arising from the branchial apparatus. In our case, a 43-year-old man ...
The branchial apparatus, which gives rise to a wide array of structures that originate in the cervical area, is organized into arches, pouches (endoderm), and clefts (ectoderm).
Branchial cleft anomalies occur as a result of an incomplete obliteration of the branchial apparatus during fetal development.
During fetal development, structures between the head and heart arise from the branchial apparatus. Of the six branchial arches in humans, the fifth and sixth are rudimentary.