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Questions and Answers
Which group of muscles is located superiorly to the hyoid bone of the neck?
Which group of muscles is located superiorly to the hyoid bone of the neck?
What is the action of the stylohyoid muscle?
What is the action of the stylohyoid muscle?
Which artery supplies the suprahyoid muscles?
Which artery supplies the suprahyoid muscles?
What nerve innervates the stylohyoid muscle?
What nerve innervates the stylohyoid muscle?
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In some cadaveric specimens, the tendon of which muscle can be seen to pierce the stylohyoid muscle?
In some cadaveric specimens, the tendon of which muscle can be seen to pierce the stylohyoid muscle?
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From where does the anterior belly of the digastric muscle arise?
From where does the anterior belly of the digastric muscle arise?
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What action does the digastric muscle perform?
What action does the digastric muscle perform?
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Which nerve innervates the anterior belly of the digastric muscle?
Which nerve innervates the anterior belly of the digastric muscle?
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What is the action of the mylohyoid muscle?
What is the action of the mylohyoid muscle?
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Which nerve innervates the posterior belly of the digastric muscle?
Which nerve innervates the posterior belly of the digastric muscle?
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What is the origin of the mylohyoid muscle?
What is the origin of the mylohyoid muscle?
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Which nerve innervates the geniohyoid muscle?
Which nerve innervates the geniohyoid muscle?
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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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What action does the geniohyoid muscle perform?
What action does the geniohyoid muscle perform?
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What nerve innervates the mylohyoid muscle?
What nerve innervates the mylohyoid muscle?
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From where does the geniohyoid muscle arise?
From where does the geniohyoid muscle arise?
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What is the action of the digastric muscle?
What is the action of the digastric muscle?
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Which nerve innervates the stylohyoid muscle?
Which nerve innervates the stylohyoid muscle?
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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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Study Notes
Suprahyoid Muscles
- Group of 4 muscles located superiorly to the hyoid bone of the neck
- Function: elevate the hyoid bone, involved in swallowing
- Arterial supply: branches of the facial artery, occipital artery, and lingual artery
Stylohyoid Muscle
- Thin muscular strip located superiorly to the posterior belly of the digastric muscle
- Attachments: arises from the styloid process of the temporal bone, attaches to the lateral aspect of the hyoid bone
- Actions: initiates a swallowing action by pulling the hyoid bone in a posterior and superior direction
- Innervation: stylohyoid branch of the facial nerve (CN VII), arises proximally to the parotid gland
Digastric Muscle
- Comprised of two muscular bellies connected by a tendon
- Attachments:
- Anterior belly arises from the digastric fossa of the mandible
- Posterior belly arises from the mastoid process of the temporal bone
- Intermediate tendon attached to the hyoid bone via a fibrous sling
- Actions: depresses the mandible and elevates the hyoid bone
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Description
Test your knowledge about the anatomy of the suprahyoid muscles, a group of 4 muscles located in the neck area superior to the hyoid bone. Learn about their actions, attachments, and arterial supply.
