Questions and Answers
What is the primary function of the mucous membrane on the inferior surface of the tongue?
Which structure does the mucous membrane on the inferior surface of the tongue reflect to?
What is the name of the fold of tissue that connects the tongue to the floor of the mouth?
What is the purpose of the reflection of the mucous membrane on the inferior surface of the tongue?
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Which of the following structures is NOT directly associated with the mucous membrane on the inferior surface of the tongue?
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What is the defining characteristic of intrinsic tongue muscles?
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Which of the following is NOT a characteristic of intrinsic tongue muscles?
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What is the primary function of intrinsic tongue muscles?
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How do intrinsic tongue muscles differ from extrinsic tongue muscles?
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Which of the following is an example of an intrinsic tongue muscle?
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What type of muscle comprises the tongue?
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What covers the surface of the tongue?
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Which statement regarding the anatomical structure of the tongue is correct?
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Which of the following best describes the tissue type found in the tongue?
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In which academic edition is information about the tongue's structure found?
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Which lymph nodes are primarily responsible for draining the sides of the anterior two thirds of the tongue?
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What nerve is responsible for general sensation and taste in the posterior third of the tongue?
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Which muscles are primarily involved in the protrusion of the tongue?
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Which muscle group is primarily responsible for the depression of the tongue?
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Which muscles are involved in the retraction of the tongue?
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Which muscles are responsible for tongue movement?
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Which nerve supplies the majority of the muscles of the tongue?
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What is the blood supply for the tongue?
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Which muscle of the tongue is innervated by the pharyngeal nerve plexus?
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Which of the following muscles does NOT contribute to tongue movement?
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Study Notes
The Tongue
- The tongue is a mass of striated muscle covered with mucous membrane.
- The mucous membrane on the inferior surface of the tongue is reflected from the tongue to the floor of the mouth.
Muscles of the Tongue
- The muscles of the tongue are divided into two types: intrinsic and extrinsic.
- Intrinsic muscles are confined to the tongue and are not attached to bone, including:
- Genioglossus
- Hyoglossus
- Styloglossus
- Palatoglossus
- Nerve supply:
- Hypoglossal nerve (except palatoglossus)
- Pharyngeal nerve plexus (palatoglossus)
Blood Supply and Lymph Drainage
- Arterial supply:
- Lingual artery
- Tonsillar branch of the facial artery
- Ascending pharyngeal artery
- Venous drainage:
- Internal jugular vein
- Lymph drainage:
- Tip: Submental lymph nodes
- Sides of the anterior two thirds: Submandibular and deep cervical lymph nodes
- Posterior third: Deep cervical lymph nodes
Sensory Innervation
- Anterior two thirds:
- Lingual nerve branch of mandibular division of trigeminal nerve (general sensation)
- Chorda tympani branch of the facial nerve (taste)
- Posterior third:
- Glossopharyngeal nerve (general sensation and taste)
Movements of the Tongue
- Protrusion: Genioglossus muscles on both sides acting together
- Retraction: Styloglossus and hyoglossus muscles on both sides acting together
- Depression: Hyoglossus muscles on both sides acting together
- Retraction and elevation of the posterior third: Styloglossus and palatoglossus muscles on both sides acting together
- Shape changes: Intrinsic muscles
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Description
This quiz covers the anatomy of the tongue, a mass of striated muscle covered with mucous membrane, based on Snell's Clinical Anatomy by regions, 9th Edition.