Submandibular & Submental (Anterior) Cervical Triangles

Question 1

what forms the borders of the anterior cervical triangle?

Answer 1

SCM
midline
mandible

Question 2

what forms the roof of the anterior cervical triangle?

Answer 2

superficial fascia (subcutaneous tissue and platysma)

Question 3

what forms the floor of the anterior cervical triangle?

Answer 3

pharynx
larynx
thyroid gland

Question 4

name the 4 triangles of the anterior triangle

Answer 4

• submandibular (digastric)
• submental
• carotid
• muscular

Question 5

what forms the boundaries of the submandibular triangle?

Answer 5

mandible & anterior & posterior bellies of digastric

Question 6

what forms the floor of the submandibular triangle?

Answer 6

• mylohyoid
• hyoglossus
• styloglossus
• middle pharyngeal constrictor mm

Question 7

name the nerves of the submandibular triangle

Answer 7

• hypoglossal (CN XII)
• glossopharyngeal (CN IX)
• mylohyoid
• lingual

Question 8

name the arteries of the submandibular triangle

Answer 8

facial
submental
lingul

Question 9

name the veins of the submandibular triangle

Answer 9

common facial v

Question 10

what are the lymph nodes of the submandibular triangle?

Answer 10

submandibular lymph nodes

Question 11

what fills the submandibular triangle?

Answer 11

submandibular gland

Question 12

describe the location of the superficial part of the submandibular gland

Answer 12

superficial to mylohyoid

Question 13

describe the location of the deep part of the submandibular gland

Answer 13

deep to mylohyoid & superficial to hyoglossus

Question 14

the submandibular duct arises from the ____ part of the gland

Answer 14

deep

Question 15

what nerve loops under the submandibular duct?

Answer 15

lingual n

Question 16

where does the submandibular duct open into?

Answer 16

sublingual papilla beside base of lingual frenulum

Question 17

sensory innervation of submandibular gland

Answer 17

lingual n

Question 18

motor innervation of submandibular gland

Answer 18

• 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)

Question 19

what forms the boundaries of the submental triangle?

Answer 19

• right & left anterior belly of digastric
• hyoid bone

Question 20

what forms the floor of the submental triangle?

Answer 20

right & left mylohyoid mm that meet in a median raphe

Question 21

nerves of the submental triangle

Answer 21

nerve to mylohyoid

Question 22

nerve to mylohyoid is a branch of what nerve?

Answer 22

inferior alveolar n

Question 23

arteries of the submental triangle

Answer 23

submental a

Question 24

the submental artery is a branch of what artery?

Answer 24

facial a

Question 25

veins of the submental triangle

Answer 25

beginning of anterior jugular v

Question 26

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

Answer 26

suprahyoid mm

Question 27

name the suprahyoid muscles

Answer 27

• mylohyoid
• geniohyoid
• stylohyoid
• digastric

Question 28

common action of suprahyoid muscles

Answer 28

with infrahyoid mm, depress mandible

Question 29

suprahyoid muscles are also known as ____

Answer 29

extrinsic muscles of the larynx

Question 30

the digastric triangle is bound by…

Answer 30

• anterior digastric
• mandible
• posterior digastric

Question 31

a portion of the parotid gland lies within which triangle?

Answer 31

digastric