Anatomy Exam 3 Innervation and Fibers

What does the Greater Palatine Nerve innervate?

Innervates hard palate from maxillay premolars back on the lingual side

Secondary palate

V2 branch

What fibers does the Greater Palatine Nerve have?

GSA: pain touch proprioception

GVE: glands

V2 branch

What does the Lesser Palatine Nerve innervate?

soft palate and palatine tonsils

V2 branch

What fibers does the Lesser Palatine Nerve have?

GSA: pain touch proprioception

GVE: glands

V2 branch

What does the Nasopalatine Nerve innervate?

Innervates primary palate and maxillary anterior teeth on lingual side

Travels through the incisive canal

V2 branch

What fibers does the Nasopalatine Nerve have?

GSA: pain touch proprioception

GVE: glands

V2 branch

What does the Pterygopalatine Ganglion branch into?

nasopalatine nerve

greater and lesser palatine nerve

posterior superior/inferior lateral nasal nerves

pharyngeal nerves

What does the Superior Labial Branches of Infraorbital Nerve (V2) innervate?

Maxillary Anterior teeth on buccal side

GSA and GVE (mucous membrane)

What does the Anterior and Middle Superior Alveolar Branches of Infraorbital Nerve (V2) innervate?

Maxillary premolars on buccal side

GSA and GVE (mucous membrane)

What does the Posterior Superior Alveolar Branches of Infraorbital Nerve (V2) innervate?

Maxillary molars on buccal side

GSA and GVE (mucous membrane)

What does the Inferior Alveolar Nerve (V3) innervate?

Mandibular teeth

Also called the dental branches of inferior alveolar nerve

What nerve innervates the Tensor Veli Palatini Muscle?

Medial Pterygoid Nerve branch off of Mandibular Nerve (V3) via Otic Ganglion

1st pharyngeal arch!

What fibers does the Medial Pterygoid Nerve have?

BE/SVE

innervates the Tensor Veli Palatini Muscle

branch off of Mandibular Nerve (V3)

What nerve innervates the Levator Veli Palatini Muscle?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What nerve innervates Palatoglossus Muscle?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What nerve innervates Palatopharyngeus Muscle?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What nerve innervates Musculus Uvulae?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What nerve innervates the Salpingopharyngeus muscle?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What fibers does the Pharyngeal branch of Vagus Nerve (CN X) carry?

BE/SVE

What fibers does the Lingual Nerve (CN V3) have?

GSA: pain touch and proprioception

GVE: secretory and motor innervation of submandibular and sublingual gland

SVA: from the chorda tympani responsible for taste perception in the anterior two-thirds of the tongue

What fibers does the Inferior Alveolar Nerve have?

GSA: pain touch and proprioception

GVE: vascular control - pinches off arteries when going from baby teeth to adult teth

What nerve innervates the mandibular posterior teeth?

Dental Branches of Inferior Alveolar Nerve

CN V3

What nerve innervates the mandibular anterior teeth?

Incisive branch of Inferior Alveolar Nerve

CN V3

What nerve innervates the buccal/gums of the mandibular molars?

Buccal Branch of Mandibular Division of Trigeminal Nerve

GSA

What nerve innervates the buccal/gums of the mandibular premolars and anterior teeth?

Mental branch of Inferior Alveolar Nerve

CN V3

What nerve innervates the Intrinsic Muscles of the Tongue?

hypoglossal nerve CN XII

What nerve innervates the Superior Longitudinal Muscle of the Tongue?

hypoglossal nerve CN XII

Intrinsic Muscle of the Tongue

What nerve innervates the Vertical and Transverse Muscles of the Tongue?

hypoglossal nerve CN XII

Intrinsic Muscle of the Tongue

What nerve innervates the Inferior Longitudinal Muscle of the Tongue?

hypoglossal nerve CN XII

Intrinsic Muscle of the Tongue

What pharyngeal arch does the Root of the Tongue come from?

3rd pharyngeal arch

Root = posterior 1/3

What pharyngeal arch does the Body of the Tongue come from?

1st pharyngeal arch

Body = anterior 2/3

What are the Intrinsic Muscles of the Tongue?

superior longitudinal

inferior longitudinal

transverse

vertical

What are the Extrinsic Muscles of the Tongue?

Genioglossus

Hyoglossus

Styloglossus

Palatoglossus

What fibers does the Hypoglossal Nerve carry?

GSE: somatomotor

What nerve innervates the Genioglossus Muscle?

Hypoglossal nerve (CN XII)

GSE: somatomotor

What nerve innervates the Hyoglossus Muscle?

Hypoglossal nerve (CN XII)

GSE: somatomotor

What nerve innervates the Styloglossus Muscle?

Hypoglossal nerve (CN XII)

GSE: somatomotor

What nerve innervates the Palatoglossus Muscle?

Pharyngeal branch of Vagus Nerve (CN X) via pharyngeal plexus

4th pharyngeal arch!

What nerves provide taste to the tongue?

SVA fibers!

Vagus Nerve (CN X) - piriform recess - bitterness

Glossopharyngeal Nerve (CN IX) - mid tongue

Facial Nerve (CN VII) via Chordi Tympani - tip of tongue - sweet and salty

What nerves provide somatic sensation to the tongue?

Vagus Nerve (CN X) - GVA

Glossopharyngeal Nerve (CN IX) - GSA

Lingual Nerve (CN V3) - GSA

The Rule to Help Learn Oral Cavity Muscle

1. If it is a "tensor" - trigeminal neve

2. If it is a "palata" - vagus nerve

3. if it is a "glossus" - hypoglossal neve

Rule 1 precedes Rule 2 and Rule 2 precedes Rule 3

What nerve innervates the Cricothyroid Muscle?

External Laryngeal Nerve from Vagus (CN X)

Tenses vocal cords

What nerve innervates the Thyro-arytenoid Muscle?

Inferior Laryngeal Nerve Branch off of Recurrent Laryngeal Nerve (CN X)

Relaxes vocal ligaments

What nerve innervates the Posterior Crico-arytenoid Muscle?

Inferior Laryngeal Nerve Branch off of Recurrent Laryngeal Nerve (CN X)

Abducts vocal folds and opens airway

What nerve innervates the Lateral Crico-arytenoid Muscle?

Inferior Laryngeal Nerve Branch off of Recurrent Laryngeal Nerve (CN X)

Adducts vocal folds

What nerve innervates the Transverse and Oblique Arytenoid Muscle?

Inferior Laryngeal Nerve Branch off of Recurrent Laryngeal Nerve (CN X)

Adducts arytenoid cartilage

What nerve innervates the Vocalis Muscle?

Inferior Laryngeal Nerve Branch off of Recurrent Laryngeal Nerve (CN X)

Relaxes posterior vocal ligament

What nerve innervates Stylopharyngeous Muscle?

glossopharyngeal nerve

What nerve innervates the superior pharyngeal constrictor?

Pharyngeal branch of Vagus Nerve (CN X) and pharyngeal plexus

BE/SVE

4th pharyngeal arch

What fibers does the Pharyngeal branch of Vagus Nerve (CN X) and pharyngeal plexus carry?

BE/SVE

innervates the pharyngeal constrictor muscles

What pharyngeal arch does the Superior Pharyngeal Constrictor Muscle come from?

4th pharyngeal arch

What nerve innervates the Middle Pharyngeal Constrictor Muscle?

Pharyngeal branch of Vagus Nerve (CN X) and pharyngeal plexus

BE/SVE

What nerve innervates the Inferior Pharyngeal Constrictor Muscle?

Pharyngeal branch of Vagus Nerve (CN X) and pharyngeal plexus

BE/SVE

6th pharyngeal arch

What pharyngeal arch does the Inferior Pharyngeal Constrictor Muscle come from?

6th pharyngeal arch