Anterior Triangle of the Neck Flashcards

1
Q

What is the bump on the back of your head called?

A

External occipital protuberance

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2
Q

8 anterior triangle muscles

A
Digastric
Mylohyoid
Stylohyoid
Sternohyoid
Omohyoid
Thyrohyoid
Sternothyroid
Geniohyoid
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3
Q

What is the innervation of each of the suprahyoid muscles

A
Digastric anterior belly: CN V3
Mylohyoid: CN V3
Stylohyoid: CN 7
Digastric posterior belly: CN 7
Geniohyoid: C1 via CN12
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4
Q

Ansa Cervicalis

A

C1, C2, C3 nerve plexus
Motor nerves
C1 forms superior root, C2 and C3 form inferior root
Supply all infrahyoid muscles (except thyrohoid which is C1 via CN12)

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5
Q

Pyramidal lobe

A

Embryological remnant of the thymus

Can project up to hyoid bone or connect to tongue

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6
Q

Recurrent laryngeal nerves

A

Innervate the vocal cords
Important for speaking ad breathing
Close to the thyroid

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7
Q

What is the innervation of the infrahyoid muscles?

A

Sternothyroid, omohyoid, sternohyoid: ansa cervicalis

Thyrohyoid: C1 via CN12

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