Podcast
Questions and Answers
Which fascia contributes to the floor of the neck triangle?
Which fascia contributes to the floor of the neck triangle?
- Investing layer of deep cervical fascia
- Pretracheal fascia (correct)
- Prevertebral fascia
- Carotid sheath
What is considered the roof of the neck triangle?
What is considered the roof of the neck triangle?
- Platysma muscle
- Sternocleidomastoid muscle
- Investing layer of deep cervical fascia (correct)
- Omohyoid muscle
Which group of muscles is a chief content of the neck triangle?
Which group of muscles is a chief content of the neck triangle?
- Pectoralis muscles
- Suprahyoid muscles
- Infrahyoid muscles (correct)
- Scalene muscles
Which muscle is an infrahyoid muscle?
Which muscle is an infrahyoid muscle?
Which of these makes up the floor of the neck triangle?
Which of these makes up the floor of the neck triangle?
Which spinal nerves supply the infrahyoid muscles?
Which spinal nerves supply the infrahyoid muscles?
Which muscle is arranged in the superficial layer of infrahyoid muscles?
Which muscle is arranged in the superficial layer of infrahyoid muscles?
Which of the following muscles attaches to the hyoid bone?
Which of the following muscles attaches to the hyoid bone?
Which muscle forms the posteroinferior border of the neck triangle?
Which muscle forms the posteroinferior border of the neck triangle?
Which of the following muscles could be arbitrarily seen as forming the floor of the neck triangle?
Which of the following muscles could be arbitrarily seen as forming the floor of the neck triangle?
Flashcards
Posterosuperiorly
Posterosuperiorly
Superior belly of the omohyoid muscle.
Posteroinferiorly
Posteroinferiorly
Lower part of the anterior border of the sternocleidomastoid muscle.
Floor of the Neck Triangle
Floor of the Neck Triangle
Pretracheal fascia, thyroid and cricoid cartilages, and trachea.
Roof of the Neck Triangle
Roof of the Neck Triangle
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Infrahyoid Muscles
Infrahyoid Muscles
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Nerve Supply to Infrahyoid Muscles
Nerve Supply to Infrahyoid Muscles
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Layers of Infrahyoid Muscles
Layers of Infrahyoid Muscles
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Form the floor
Form the floor
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Study Notes
- The superior belly of the omohyoid muscle is located posterosuperiorly.
- The lower part of the anterior border of the sternocleidomastoid muscle is located posteroinferiorly.
- Pretracheal fascia, thyroid and cricoid cartilages, and the trachea form the floor.
- The investing layer of deep cervical fascia forms the roof.
Contents
- The infrahyoid muscles make up the chief contents of the triangle.
- These muscles can be seen as forming the floor of the triangle.
- The infrahyoid muscles are:
- Sternohyoid
- Sternothyroid
- Thyrohyoid
- Omohyoid
Peculiarities of Infrahyoid Muscles
- Arranged in two layers: a superficial layer (sternohyoid and omohyoid) and a deep layer (sternothyroid and thyrohyoid).
- Supplied by the ventral rami of C1, C2, and C3 spinal nerves.
- Due to their attachment to the hyoid bone and thyroid cartilage, they can move structures.
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