Submandibular & Submental (Anterior) Cervical Triangles Flashcards

1
Q

what forms the borders of the anterior cervical triangle?

A

SCM
midline
mandible

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2
Q

what forms the roof of the anterior cervical triangle?

A

superficial fascia (subcutaneous tissue and platysma)

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3
Q

what forms the floor of the anterior cervical triangle?

A

pharynx
larynx
thyroid gland

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4
Q

name the 4 triangles of the anterior triangle

A
  • submandibular (digastric)
  • submental
  • carotid
  • muscular
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5
Q

what forms the boundaries of the submandibular triangle?

A

mandible & anterior & posterior bellies of digastric

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6
Q

what forms the floor of the submandibular triangle?

A
  • mylohyoid
  • hyoglossus
  • styloglossus
  • middle pharyngeal constrictor mm
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7
Q

name the nerves of the submandibular triangle

A
  • hypoglossal (CN XII)
  • glossopharyngeal (CN IX)
  • mylohyoid
  • lingual
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8
Q

name the arteries of the submandibular triangle

A

facial
submental
lingul

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9
Q

name the veins of the submandibular triangle

A

common facial v

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10
Q

what are the lymph nodes of the submandibular triangle?

A

submandibular lymph nodes

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11
Q

what fills the submandibular triangle?

A

submandibular gland

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12
Q

describe the location of the superficial part of the submandibular gland

A

superficial to mylohyoid

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13
Q

describe the location of the deep part of the submandibular gland

A

deep to mylohyoid & superficial to hyoglossus

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14
Q

the submandibular duct arises from the ____ part of the gland

A

deep

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15
Q

what nerve loops under the submandibular duct?

A

lingual n

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16
Q

where does the submandibular duct open into?

A

sublingual papilla beside base of lingual frenulum

17
Q

sensory innervation of submandibular gland

A

lingual n

18
Q

motor innervation of submandibular gland

A
  • preganglionic parasympathetic secretomotor from facial n
  • synapse in submandibular ganglion (suspended from lingual n) then travel w arteries
  • sympathetics from superior cervical ganglion (also travel w aa)
19
Q

what forms the boundaries of the submental triangle?

A
  • right & left anterior belly of digastric
  • hyoid bone
20
Q

what forms the floor of the submental triangle?

A

right & left mylohyoid mm that meet in a median raphe

21
Q

nerves of the submental triangle

A

nerve to mylohyoid

22
Q

nerve to mylohyoid is a branch of what nerve?

A

inferior alveolar n

23
Q

arteries of the submental triangle

A

submental a

24
Q

the submental artery is a branch of what artery?

A

facial a

25
Q

veins of the submental triangle

A

beginning of anterior jugular v

26
Q

what group of muscles form the “floor of the mouth?”

A

suprahyoid mm

27
Q

name the suprahyoid muscles

A
  • mylohyoid
  • geniohyoid
  • stylohyoid
  • digastric
28
Q

common action of suprahyoid muscles

A

with infrahyoid mm, depress mandible

29
Q

suprahyoid muscles are also known as ____

A

extrinsic muscles of the larynx

30
Q

the digastric triangle is bound by…

A
  • anterior digastric
  • mandible
  • posterior digastric
31
Q

a portion of the parotid gland lies within which triangle?

A

digastric