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Questions and Answers
What is the primary appearance feature of the hard palate?
What is the primary appearance feature of the hard palate?
Which feature of the hard palate indicates a higher concentration of adipose tissue?
Which feature of the hard palate indicates a higher concentration of adipose tissue?
What structure covers the nasopalatine nerves as they emerge from the incisive foramen?
What structure covers the nasopalatine nerves as they emerge from the incisive foramen?
What unique feature of the hard palate is covered by firm irregular tissue that radiates transversely?
What unique feature of the hard palate is covered by firm irregular tissue that radiates transversely?
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What describes the general feeling of the hard palate towards its medial portion?
What describes the general feeling of the hard palate towards its medial portion?
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What is a potential impact on the functions of the hard palate due to changes in its appearance?
What is a potential impact on the functions of the hard palate due to changes in its appearance?
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What type of growth is a palatal torus?
What type of growth is a palatal torus?
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What additional structure is involved in the fusion of the hard palate?
What additional structure is involved in the fusion of the hard palate?
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What is the primary function of the mylohyoid muscle?
What is the primary function of the mylohyoid muscle?
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What provides the structural support for the floor of the mouth?
What provides the structural support for the floor of the mouth?
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Which of the following accurately describes the clinical appearance of the floor of the mouth?
Which of the following accurately describes the clinical appearance of the floor of the mouth?
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Which of the following muscles forms the sling supporting the FOM?
Which of the following muscles forms the sling supporting the FOM?
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Which type of tissue primarily composes the floor of the mouth?
Which type of tissue primarily composes the floor of the mouth?
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Where does the hyoglossus muscle originate?
Where does the hyoglossus muscle originate?
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Which function is associated with the muscles of the floor of the mouth?
Which function is associated with the muscles of the floor of the mouth?
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Which nerve supplies the mylohyoid muscle?
Which nerve supplies the mylohyoid muscle?
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What is the primary nerve responsible for innervating the floor of the mouth?
What is the primary nerve responsible for innervating the floor of the mouth?
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What is the primary action of the geniohyoid muscle?
What is the primary action of the geniohyoid muscle?
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What is the blood supply to the hyoglossus muscle?
What is the blood supply to the hyoglossus muscle?
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How does the floor of the mouth respond to trauma based on its tissue structure?
How does the floor of the mouth respond to trauma based on its tissue structure?
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Which structure is found above the mylohyoid muscle?
Which structure is found above the mylohyoid muscle?
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Which anatomical feature is a characteristic of the hard palate?
Which anatomical feature is a characteristic of the hard palate?
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What important clinical consideration is associated with the floor of the mouth and palate?
What important clinical consideration is associated with the floor of the mouth and palate?
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What direction do the fibers of the mylohyoid muscle run?
What direction do the fibers of the mylohyoid muscle run?
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What is the term for the anatomical structure that separates the oral cavity from the nasal cavity?
What is the term for the anatomical structure that separates the oral cavity from the nasal cavity?
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Which anatomical feature is found on the ventral surface of the tongue?
Which anatomical feature is found on the ventral surface of the tongue?
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Which of the following structures are considered part of the palatine features?
Which of the following structures are considered part of the palatine features?
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What is the function of the lingual papillae?
What is the function of the lingual papillae?
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Which structure is primarily responsible for the movement of the soft palate during swallowing?
Which structure is primarily responsible for the movement of the soft palate during swallowing?
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What nerve provides sensory innervation to the soft palate?
What nerve provides sensory innervation to the soft palate?
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Which artery supplies the hard palate?
Which artery supplies the hard palate?
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What is a potential cause for changes in the appearance of the soft palate?
What is a potential cause for changes in the appearance of the soft palate?
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Which muscle forms the floor of the oral cavity?
Which muscle forms the floor of the oral cavity?
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Which condition is represented by the presence of Candida albicans on the soft palate?
Which condition is represented by the presence of Candida albicans on the soft palate?
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What could be a consequence of smoking regarding changes in the soft palate?
What could be a consequence of smoking regarding changes in the soft palate?
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Which nerve branch innervates the hard palate?
Which nerve branch innervates the hard palate?
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What type of change may occur on the soft palate due to natural abnormalities?
What type of change may occur on the soft palate due to natural abnormalities?
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Study Notes
Floor of the Mouth (FOM)
- The FOM is a horseshoe-shaped region under the tongue
- The FOM is supported by 3 muscles: mylohyoid, hyoglossus, and geniohyoid
- Clinical appearance: reddish-pink, vascular blue in areas of veins, shiny and moist, compressible
Histology of the FOM
- Loose connective tissue with vascularity and mucous glands
- Allows tongue movement and is compressible
Mylohyoid Muscle
- Origin: mylohyoid line on the medial surface of the mandible
- Insertion: anterior surface of the body of the hyoid bone
- Action: forms the floor of the oral cavity, elevates the FOM and hyoid bone, assists in depressing the mandible
- Nerve Supply: trigeminal nerve (mylohyoid branch)
- Blood Supply: inferior alveolar, sublingual, and submental arteries
Hyoglossus Muscle
- Origin: superior border of the greater cornu of the hyoid bone
- Insertion: lateral borders of the tongue
- Action: depresses and retracts the tongue, pulls the lateral edges down onto the FOM
- Nerve Supply: hyoglossal nerve
- Blood Supply: lingual artery
Geniohyoid Muscle
- Origin: inferior genial tubercle (mental spine) on the lingual surface of the mandible at the midline
- Insertion: body of the hyoid bone
- Action: elevates the hyoid bone and tongue, depresses mandible
- Nerve Supply: hypoglossal nerve
- Blood Supply: submental artery
Hard Palate
- Clinical appearance: pink, immobile, firm, cushioned
- Histology: stratified squamous epithelium, dense connective tissue
Features of the Hard Palate
- High vaulted shape
- Incisive papilla covers the nasopalatine nerves
- Palatine rugae are irregular firm tissue radiating from incisive papilla
- Median palatine raphe covers the median palatine suture
- Palatal torus is a bony growth
Soft Palate
- Clinical appearance: pink, mobile, less defined than hard palate
- Histology: stratified squamous epithelium, loose connective tissue
Nerve Innervation and Blood Supply of the Palate
- Hard palate
- Sensory innervation: greater palatine and nasopalatine nerves
- Blood supply: greater palatine artery
- Soft palate
- Sensory innervation: lesser palatine nerve
- Blood Supply: lesser palatine arteries
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Description
This quiz covers the anatomy and histology of the Floor of the Mouth (FOM), including its muscle support and clinical appearance. Focus on the mylohyoid and hyoglossus muscles, their actions, and nerve supplies. Test your knowledge about the structural components and functions of this important oral region.
