Branchial Arch Innervation and Derivatives

by / Tuesday, 17 August 2010 / Published in Anatomy

BRANCHIAL ARCH INNERVATION AND DERIVATIVES

Arch 1 derivatives are supplied by CN V2 and V3

Arch 2 derivatives supplied by CN VII

Arch 3 derivatives supplied by CN IX

Arch 4 and 6 derivatives are supplied by CN X

ARCH 1 ARCH 2 ARCH 3 ARCH 4 & 6
Meckel’s cartilage:

Mandible

Malleus

Incus

Sphenomandibular ligament

Muscles of mastication:

Masseter

Lateral/Medial pterygoid

Mylohyoid

Anterior belly of digastric

Tensor tympani

Tensor veli palatini

Nerve: CN V3

Reiter’s Cartilage:

Stapes

Styloid process

Lesser horn of hyoid

Stylohyoid ligament

Muscles:

Stapedius

Stylohyoid

Posterior belly of digastric

Nerve: CN VII

Cartilage:

Greater horn of hyoid

Muscles:

Stylopharyngeus

Nerve: CN IX

Cartilage:

Thyroid

Cricoid

Arytenoids

Corniculate

Cuneiform

Muscles of 4th arch:

Most of the pharyngeal constrictors

Cricothyroid

Levator veli palatini

Muscles of 6th arch:

All intrinsic muscles of larynx except cricothyroid

Nerve: 4th arch is CN X, 6th arch is CN X

One Response to “Branchial Arch Innervation and Derivatives”

  1. This is a very good, fast reminder of the derivatives n nerve supply of pharyngeal arches. I enjoy reading it. More grease to ur elbows.

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