Oral Cavity Flashcards by Eva Contos

Where is the vestibule?

In between the lips and cheeks and in front of/lateral to the teeth and gums

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T/F:

Buccinator is a part of oral cavity proper

False

Part of the vestibule

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Where does buccinator extend from?

Outer surfaces of the mandible and maxilla and pterygomandibular raphe to modiolus

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Which structure is found anteriorly and laterally in the oral cavity proper?

Alveolar teeth of manadible and maxilla

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T/F:

The palatoglossal folds extend from the hard palate to the posterolateral tongue

False

Soft palate

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T/F: Palatopharyngeal folds extend from the thyroid lammina and contain palatopharyngeal muscle

True

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Which structures make up the hard palate?

palatine process of maxilla and horizontal plate of palatine bone

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Which structures make up the floor of the oral cavity proper?

Tongue
Alveolar lingual sulcus
Mylohyoid muscle

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What are the three parts of the tongue?

Root
Dorsum
Ventral surface

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T/F: The ventral surface of the tongue extends into the oropharynx

False

does not

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What is the dorsum part of the tongue divided into?

Palatine (anterior)

Pharyngeal (posterior)

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T/F:

Taste buds are found on the dorsal surface of the palatine part of the tongue

True

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Where are taste found?

Fungiform, vallat and foliate papilla as well as in the lining of the oral cavity

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T/F:

Taste buds are found on filiform papilla

False

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What does the alveolar lingual sulcus contain?

Sublingual folds

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Which structures are deep to the alveolar lingual sulcus?

sublingual salivary glands

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What is the midline of the ventral surface of palatine tongue?

Frenulum

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T/F:

Fimbriated folds are lateral to the frenulum and lingual veins are lateral to the fimbriated folds

False

Lingual veins are lateral to the frenulum and fimbriated folds are lateral to the lingual veins

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Where do the submandibular ducts open up into?

Sublingual folds

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What can be found on the sides of the palatine tongue?

Approximately 5 foliate papillae on each side

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Where does the pharyngeal part of the tongue extend to?

Just posterior to the vallate papillae to the epiglottis

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T/F:

Lingual tonsils are found in the palatine tongue

False

pharyngeal tongue

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T/F:

Extrinsic muscles of the tongue change its shape and intrinsic muscles of the tongue move it.

False

Other way round

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List the intrinsic muscles of the tongue

Superior and inferior longitudinal

Vertical and transverse

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List the extrinsic muscles of the tongue

Genioglossus Hyloglossus Styloglossus Palatologlossus

Where does genioglossus extend from and what is its function?

Mental spine to the tongue | protrusion

Which muscle extends from the hyoid to the sides of the tongue and is involved in depressing the side of the tongue?

Hyloglossus

T/F: | Styloglossus extends from the styloid process to the side of the tongue

True

What is the role of styloglossus?

Posterosuperior movement, tongue up and back during swallowing

Where does palatoglossus extend from and what is its role?

Soft palate to the tongue Elevates the tongue Narrows the isthmus

Lingual artery runs deep to ____ and in | between ____ and _____

Deep to intermediate tendon of digastric | In between hyoglossus and genioglossus

Where does the lingual vein normally drain to?

Internal jugular vein

Which nerve supplies general sensation to the mucosa of the tongue?

Lingual nerve

Where do the taste buds get their special sensation from?

Chorda tympani except vallate taste buds | Vallate taste buds get theirs from glossopharyngeal

T/F: | Posterior tongue/mucosa gets general sensation from lingual nerve

False | general sensation from glossopharyngeal and vagus

T/F: | Hypoglossal nerve innervates the intrinsic and extrinsic muscles

False Innervates all except palatoglossus Palatoglossus is innervated by the pharyngeal plexus

What innervates the intrinsic salivary glands?

Parasympathetic from chorda tympani

Are intrinsic salivary glands found on the gingival or anterior hard palate?

What are intrinsic salivary glands of the tongue called?

von Ebner's glands

T/F: | Intrinsic salivary glands are mucus secreting

False | Predominantly mucus but von Ebner's is serous

T/F: | Extrinsic salivary glands are within the oral cavity

False | Outside

T/F: | Parotid gland secretes serous

False | mucus

What do the sublingual/submandibular glands secrete?

Mixed mucus and serous

Sublingual gland is between ___ and _____

Between mylohyoid and oral mucosa

Where would you find the lingual tonsils?

Pharyngeal part of the tongue

Where does the pharyngeal part of tongue extend from?

Posterior to the vallate papillae to the epiglottis

The palatine tonsil is found in between which two structures?

Palatoglossal fold (more lateral) and palatopharyngeal fold (more medial)

T/F: | Palatopharyngeal fold is more lateral than the palatoglossal fold

False | Other way round

T/F: | Submandibular glands empty into the sublingual folds

False They empty into the sublingual papillae (sublingual ducts empty into the sublingual folds)

T/F: | Inferior longitudinal muscles are mostly lateral

True

T/F: | The lingual artery can be found superficial to hyoglossus muscle

False It is deep passes between hyoglossus and genioglossus

T/F: | Palatoglossus is beneath the palatoglossus fold/arch

True

T/F: | Blood vessels of the oral cavity receive parasympathetic supply from plexuses on the lingual artery

False | Sympathetic supply

What makes up the hard palate?

Palatine process of maxilla, horizontal plate of palatine bone

T/F: | The mucosa of the hard palate is smooth anteriorly and transverse folds posteriorly

False | Other way round

What is found in the submucosa of the hard palate?

Adipose tissue and salivary glands

What makes up the soft palate?

Muscle and aponeuroses of palatine muscles

T/F: | The soft palate has respiratory mucosa on the nasal surface

True

Where does levator palati extend from?

Medial auditory tube to the palatal aponeurosis

Which muscle is lateral to levator palati?

Tensor palati

Where does levator palati extend from?

Scaphoid fossa, sphenoid bone and lateral wall of cartilagenous auditory tube to the hamulus where it forms a tendon

T/F: | The tendon of tensor palati turns laterally around the hamulus and inserts/becomes the palatal aponeurosis

False | Turns medially

Which part of tensor palati is part of the soft palate?

The aponeurosis

Which muscle does palatopharyngeus join?

Salpingopharyngeus

T/F: | Hypoglossal nerve is deep to posterior belly of digastric

False | Deep to intermediate tendon

T/F: | Hypoglossal nerve passes in between hyoglossus and mylohyoid muscles

True

Which muscle can the hypoglossal nerve be found superfically to?

Genioglossus

What is the function of the hypoglossal nerve?

Motor supply to muscles of the tongue except palatoglossus

Which two muscles does the glossopharyngeal nerve pass between with stylopharyngeus?

Superior and middle pharyngeal constrictors

T/F: | Glossopharyngeal nerve provides motor supply to palatopharyngeus

False | stylopharyngeus

Which structure does glossopharyngeal provide parasympathetic innervation to?

Secretomotor to parotid