The first branchial arch, also called the first pharyngeal arch and mandibular arch, is the first of six pharyngeal arches that develops in fetal life during the fourth week of development. It is located between the stomodeum and the first pharyngeal groove.
Read more about First Pharyngeal Arch: Processes, Meckel's Cartilage, Derivatives, Nerve Supply, Blood Supply, Additional Images
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“Prayer is the fair and radiant daughter of all the human virtues, the arch connecting heaven and earth, the sweet companion that is alike the lion and the dove; and prayer will give you the key of heaven. As pure and as bold as innocence, as strong as all things are that are entire and single, this fair and invincible queen rests on the material world; she has taken possession of it; for, like the sun, she casts about it a sphere of light.”
—Honoré De Balzac (1799–1850)