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Anatomy Block 3 > Anterior Triangle of Neck > Flashcards

Anterior Triangle of Neck Flashcards

1
Q

What are the boundaries of the anterior triangle of the neck?

A

Anterior: midline of the neck
Posterior: anterior border of the sternocleidomastoid
Superior: Mandible

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2
Q

what are the 4 infrahyoid muscles?

A

omohyoid
sternohyoid
thyrohyoid
sternothyroid

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3
Q

what is the innervation of the sternohyoid

A

ansa cervicalis (C1-C3)

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4
Q

what is the innervation of the sternothyroid

A

ansa cervicalis (C1-C3)

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5
Q

what is the innervation of the thyrohyoid?

A

C1 fibers via hypoglossal nerve

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6
Q

what fibers make up the ansa cervicalis?

A

fibers from C1- to C3

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7
Q

what does the ansa cervicalis supply?

A

both bellies of omohyoid
sternohyoid
sternothyroid
thyrohyoid + geniohyoid

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8
Q

what is the innervation of the posterior and anterior belly of the digastric muscles?

A

posterior- facial nerve

anterior- nerve to mylohyoid

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9
Q

what are the suprahyoid muscles?

A

digastric
stylohyoid
mylohyoid
geniohyoid

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10
Q

what innervates the stylohyoid?

A

facial nerve

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11
Q

what innervates the mylohyoid?

A

nerve to the mylohyoid

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12
Q

what innervates the geniohyoid?

A

C1 fibers

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13
Q

what are the anterior vertebral muscles?

A

longus capitis
longus colli
rectus capitis anterior
rectus capitis lateralis

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14
Q

what is the innervation of the longus capitis?

A

ventral rami of C1 to C3

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15
Q

what is the innervation of the longus colli?

A

ventral rami of C2 to C6

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16
Q

what is the innervation of the rectus capitis anterior and lateralis?

A

: ventral rami of C1 and C2

17
Q

what are the 3 parts of the longus colli?

A

inferior oblique
superior oblique
vertical

18
Q

what makes up the boundaries of the submandibular triangle?

A

posterior belly of digastric + stylohyoid
anterior belly of digastric
inferior border of mandible
floor- mylohyoid

19
Q

what are the contents of the submandibular triangle?

A 
Submandibular gland
Facial vessels (A + V)
Submandibular lymph nodes
Hypoglossal nerve
Mylohyoid nerve and vessels (A + V
20
Q

what are the boundaries of the carotid triangle?

A

anterior border of sternocleidomastoid
posterior belly of digastric
superior belly of omohyoid

21
Q

what runs through the carotid triangle?

A 
Common carotid
Initial segments of external and internal carotid 
Some branches of external carotid
Internal jugular + some tributaries
Vagus
Accessory
Hypoglossal
Ansa cervicalis
Internal and external laryngeal nerves 
Deep cervical lymph nodes
22
Q

what are the boundaries of the muscular triangle of the neck?

A

anterior midline of the neck
superior belly of omohyoid
anterior border of sternocleidomastoid

23
Q

what runs through the muscular triangle?

A

sternohyoid

sternothyroid

24
Q

what are the boundaries of the submental triangle?

A

both anterior bellies of digastric muscles
hyoid bone
floor- mylohyoid muscle

25
Q

What is the action of the sternohyoid m.?

A

Depresses hyoid bone

26
Q

What is the action of the sternothyroid m.?

A

Depresses larynx

27
Q

What is the action of the thyrohyoid?

A

Depresses hyoid bone or elevates the larynx

28
Q

What is the action of the digastric muscle?

A

Depresses the mandible or elevates hyoid bone

29
Q

What is the action of the stylohyoid m.?

A

Lifts up the hyoid bone and draws it backwards

30
Q

What is the action of the mylohyoid?

A

Elevates the floor of the mouth, depresses the mandible, and elevates the hyoid bone

31
Q

What is the action of the geniohyoid?

A

Elevates the hyoid bone and draws it forward

32
Q

What is the action of the longus capitis?

A

Flexion of head and neck

33
Q

What is the action of the longus colli?

A

Flexion of the neck

34
Q

What is the action of the rectus capitis anterior?

A

Flexion of the head

35
Q

What is the action of the rectus capitis lateralis?

A

Lateral flexion of head to one side

Anatomy Block 3 (12 decks)

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