Floor of the Mouth and Palate Quiz (ODS Learning Outcomes)

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Questions and Answers

What is the primary action of the geniohyoid muscle?

Widen the oral cavity

Shortens the tongue

Depresses the hyoid bone

Elevates the hyoid bone (correct)

Which structure is included in the features of the floor of the mouth?

Tonsillar fossa

Lingual frenum (correct)

Uvula

Palatopharyngeal arch

Which nerve is primarily responsible for sensory innervation of the hard palate?

Mandibular nerve

Greater palatine nerve (correct)

Lesser palatine nerve

Maxillary nerve

Where does the geniohyoid muscle originate?

Inferior genial tubercle Signup and view all the answers

Which artery supplies the greater palatine nerve?

Greater palatine artery Signup and view all the answers

What feature of the soft palate includes the palatoglossal arch?

Pillars of the fauces Signup and view all the answers

Which duct is associated with the submandibular salivary glands?

Whartons duct Signup and view all the answers

Which anatomical feature is NOT found in the hard palate?

Uvula Signup and view all the answers

What is the color appearance of the floor of the mouth?

Reddish-pink Signup and view all the answers

Which characteristic best describes the hard palate?

Pink and firm Signup and view all the answers

The mylohyoid muscle has which of the following actions?

Elevates the hyoid bone and assists in swallowing Signup and view all the answers

Which muscle originates from the superior border of the greater cornu of the hyoid bone?

Hyoglossus Signup and view all the answers

What is a key feature of the soft palate?

It is deep pink and can be slightly yellowish Signup and view all the answers

Which condition describes the compressibility of the floor of the mouth?

It is compressible and moist Signup and view all the answers

Where do the fibers of the mylohyoid muscle insert?

Into the anterior surface of the body of the hyoid bone Signup and view all the answers

In the context of the floor of the mouth, the term 'vascular blue' refers to which aspect?

Areas of veins visible Signup and view all the answers

What action does the hyoglossus muscle perform?

Retracts and depresses the tongue Signup and view all the answers

Study Notes

Floor of the Mouth Clinical Appearance

Color: Reddish-pink, with vascular blue hues in vein areas.
Texture: Shiny and moist, compressible.

Palate Clinical Appearance

Hard Palate:
- Color: Pink.
- Texture: Immobile, firm, with a slightly more cushioned feeling laterally and firmer medially.
Soft Palate:
- Color: Deeper pink, can be slightly yellowish.
- Texture: Moist, compressible, and elastic.

Floor of the Mouth Muscles

Mylohyoid:
- Origin: Mylohyoid line of mandible.
- Insertion: Anterior surface of hyoid bone.
- Action: Forms floor of oral cavity, elevates floor of mouth and hyoid, assists in depressing mandible.
Hyoglossus:
- Origin: Superior border of hyoid greater cornu.
- Insertion: Lateral borders of tongue.
- Action: Depresses and retracts tongue, pulls lateral edges down on floor of mouth.
Geniohyoid:
- Origin: Inferior genial tubercle (mental spine) of mandible.
- Insertion: Body of hyoid bone.
- Action: Elevates hyoid, shortens floor of mouth, widens pharynx.

Floor of the Mouth Key Features

Lingual frenum
Sublingual papillae (and sublingual folds)
Mandibular tori
Ventral surface of tongue
Wharton's duct (submandibular salivary glands)
Bartholin's duct and Rivinus ducts (sublingual salivary glands)
Minor salivary glands of the floor of the mouth

Palate Key Features

Hard Palate:
- Medial
- Anterior
- Posterior
- Lateral
Soft Palate:
- Uvula
- Pillars of Fauces (palatoglossal and palatopharyngeal arches)
- Tonsillar fossa
- Pterygo-mandibular fold

Nerve Innervation and Blood Supply

Floor of the Mouth: Innervation and blood supply details are not provided.
Hard Palate: Sensory innervation by branches of maxillary nerve (trigeminal V), with greater palatine and nasopalatine nerves and greater palatine artery.
Soft Palate: Sensory innervation by lesser palatine nerve, with lesser palatine arteries.

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Description

This quiz covers the clinical appearance and anatomical features of the floor of the mouth and palate. It includes details on muscle origins, insertions, and actions relevant to the oral cavity. Enhance your understanding of oral anatomy and its implications in clinical practice.