Head-and-Neck-Anatomy-Questions

Jun 21st, 2015
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Alcorn State University
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What is a "branchial arch"? What is the nerve of the first branchial arch? The nerve of the second branchial arch? Branchial Arch: one of a series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of a vertebrate embryo, consist typically of a curved segmented bar or rod on each side meeting the contralateral bar or rod at the ventral end, and correspond to the gill arches of fishes and amphibians

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HEAD & NECKLab I: 11/3/051) What is the difference between the "skull" and the "cranium"?Skull: all 22 bones listed below.Cranium: the skull minus the mandible1Skull, 22 bonesCranial, 8 bonesOccipital.Two Parietals.Frontal.Two Temporals.Sphenoidal.Ethmoidal.Facial, 14 bonesTwo Nasals.Two Maxill.Two Lacrimals.Two Zygomatics.Two Palatines.Two Inferior Nasal Conch.Vomer.Mandible.2) What is a "branchial arch"? What is the nerve of the first branchial arch? The nerve of the second branchial arch?Branchial Arch: one of a series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of a vertebrate embryo, consist typically of a curved segmented bar or rod on each side meeting the contralateral bar or rod at the ventral end, and correspond to the gill arches of fishes and amphibiansFirst Branchial Arch: Mandibular Arch ? Muscles of mastication ? Mandibular n. (CN V3 - one of three branches of Trigeminal n.)Second Branchial Arch: Hyoid Arch ? Facial muscles (expression) ? Facial n. (CN VII)3) What is the major sensory nerve of the face? What are the divisions of this nerve? What type of nerve fibers are found in each division?Trigeminal n. (CN V) - major sensory n. of face with three large groups of peripheral processes from n. cell bodies comprising trigeminal ganglion (large sensory ganglion of CN V)Opthalmic n. (CN V1) - all sensory GSAMaxillary n. (CN V2) - all sensory GSA

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