Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > Anterior Triangle and Submandibular Region > Flashcards

Anterior Triangle and Submandibular Region Flashcards

1
Q

what are the four divisions of the anterior triangle?

A

muscular
carotid
submental
digastric/submandibular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the border of the muscular triangle?

A

anterior border of the sternocleidomastoid
superior belly of the omohyoid muscle
median line

paired triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the border of the carotid triangle

A

posterior belly of the digastric muscle
superior belly of the omohyoid muscle
anterior border of the sternocleidomastoid
paired triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the border of the submental triangle?

A

two anterior bellies of the digastric muscles
hyoid bone

unpaired triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the borders of the digastric/submandibular triangle?

A

two bellies of the digastric muscles
lower border of the mandible

paired triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the contents of the muscular triangle?

A

infrahyoid muscles (strap muscles)

  • sternohyoid
  • omohyoid
  • sternothyroid
  • thyrohyoid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what do the infrahyoid muscles act on?

A

larynx and hyoid bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

sternohyoid =

A 
origin = within thorax, behind manubrium (top of sternum..)
insertion = hyoid bone
innervation = inferior root of ansa cervicalis (descendens cervicalis), fibers C2,C3 
action = depressor of larynx as a whole
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q 
origin = within thorax, behind manubrium (top of sternum..)
insertion = hyoid bone
innervation = inferior root of ansa cervicalis (descendens cervicalis), fibers C2,C3
action = depressor of larynx as a whole
A

sternohyoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

omohyoid =

A 
origin = near the suprascapular notch
insertion = hyoid bone
innervation = superior root of the ansa cervicalis (descendens hypoglossi) fibers C1 [superior belly]
action = depressor of larynx as a whole

two bellies with an intermediate tendon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q 
origin = near the suprascapular notch
insertion = hyoid bone
innervation = superior root of the ansa cervicalis (descendens hypoglossi) fibers C1 [superior belly]
action = depressor of larynx as a whole

two bellies with an intermediate tendon

A

omohyoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

sternothyroid =

A 
origin = posterior manubrium below origin of sternohyoid 
insertion = oblique line of thyroid cartilage 
innervation = inferior root of the ansa cervicalis (descendens cervicalis), fibers from C2-C3 
action = depressor of the larynx as a whole
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q 
origin = posterior manubrium below origin of sternohyoid 
insertion = oblique line of thyroid cartilage 
innervation = inferior root of the ansa cervicalis (descendens cervicalis), fibers from C2-C3 
action = depressor of the larynx as a whole
A

sternothyroid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

thyrohyoid =

A 
origin = oblique line of thyroid cartilage 
insertion = hyoid bone
innervation = C1 fibers hitchhiking on the hypoglossal nerve
action = elevator of the larynx as a whole
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q 
origin = oblique line of thyroid cartilage 
insertion = hyoid bone
innervation = C1 fibers hitchhiking on the hypoglossal nerve
action = elevator of the larynx as a whole
A

thyrohyoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is contained within the carotid triangle?

A

bifurcation of the common carotid artery
internal carotid artery
external carotid artery and its branches
vagus nerve
internal jugular vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

describe the branching pattern of the external carotid artery

(five branches, then terminal branches)

A 
superior thyroid artery
lingual artery
facial artery
ascending pharyngeal artery
occipital artery
Terminal branches = maxillary, superficial temporal artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

which arteries off the external carotid artery have additional branches?

A

superior thyroid artery –> superior laryngeal branch

facial artery –> glandular branches, submental branch, tonsilar, ascending palatine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

the superior laryngeal branch travels with which nerve?

A

internal branch of the superior laryngeal nerve, through thyrohyoid membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

the submental branch accompanies which nerve to which muscle?

A

trigeminal nerve to the mylohyoid muscle

21
Q

the occipital artery travels with which nerve?

A

greater occipital nerve (hooks over the hypoglossal nerve)

22
Q

what is contained within the digastric/submandibular triangle?

A

suprahyoid muscles
submandibular gland
submandibular lymph nodes
facial artery and vein

23
Q

digastric muscles =

A 
origin = medial aspect of the mastoid process (posterior belly)
insertion = inner surface of the mandible close to the midline (anterior belly)
innervation = posterior: facial nerve; anterior: trigeminal nerve by way of nerve to mylohyoid muscle
action= elevator of the larynx as a whole

intermediate tendon of this muscle goes through a connective tissue pully which is attached to the hyoid bone; usually basses between two parts of the stylohyoid muscle
2 bellies

24
Q 
origin = medial aspect of the mastoid process (posterior belly)
insertion = inner surface of the mandible close to the midline (anterior belly)
innervation = posterior: facial nerve; anterior: trigeminal nerve by way of nerve to mylohyoid muscle
action= elevator of the larynx as a whole

intermediate tendon of this muscle goes through a connective tissue pully which is attached to the hyoid bone; usually basses between two parts of the stylohyoid muscle
2 bellies

A

digastric muscle

25
Q

stylohyoid muscle =

A 
origin = styloid process
insertion = hyoid bone
innervation = facial nerve
action = elevator of the larynx as a whole

usually splits to pass on both sides of intermediate tendon of the digastric muscle

26
Q

mylohyoid muscle =

A 
origin = mylohyoid line of the mandible 
insertion = hyoid bone and a connective tissue raphe which extends from the hyoid bone to the mandible in the midline between left and right muscles
innervation = trigeminal nerve (nerve to the mylohyoid muscle)
action = elevator of the larynx as a whole

forms the muscular floor of the mouth

27
Q 
origin = styloid process
insertion = hyoid bone
innervation = facial nerve
action = elevator of the larynx as a whole

usually splits to pass on both sides of intermediate tendon of the digastric muscle

A

stylohyoid muscle

28
Q 
origin = mylohyoid line of the mandible 
insertion = hyoid bone and a connective tissue raphe which extends from the hyoid bone to the mandible in the midline between left and right muscles
innervation = trigeminal nerve (nerve to the mylohyoid muscle)
action = elevator of the larynx as a whole

forms the muscular floor of the mouth

A

mylohyoid

29
Q

geniohyoid muscle =

A

origin = inferior genial tubercle of the mandible
insertion = body of the hyoid bone
innervation = C1, C2 through the hypoglossal nerve
action =

situated above the mylohyoid muscle

30
Q

origin = inferior genial tubercle of the mandible
insertion = body of the hyoid bone
innervation = C1, C2 through the hypoglossal nerve
action =

situated above the mylohyoid muscle

A

geniohyoid

31
Q

the suprahyoid muscles include which muscles and what do they do?

A 
digastric 
stylohyoid
mylohyoid 
geniohyoid
hyoglossus
genioglossus

act on the jaw, mouth, tongue

32
Q

the gland that fills the majority of the digastric/submandibular triangle is

A

submandibular gland

33
Q

cranial nerve 5

A

trigeminal

34
Q

trigeminal nerve supplies:

A

nerve to mylohyoid muscle

anterior belly of the digastric

35
Q

cranial nerve 7

A

facial nerve

36
Q

facial nerve supplies:

A

platysma muscle
stylohyoid
posterior belly of digastric

37
Q

cranial nerve 9

A

glossopharyngeal nerve

38
Q

glossopharyngeal nerve supplies

A

carotid sinus

39
Q

cranial nerve 10

A

vagus nerve

40
Q

vagus nerve travels with:

A

internal carotid artery and internal jugular nerve in the carotid shealth

41
Q

the vagus nerve branches into:

A

superior and inferior cervical cardiac nerves
superior laryngeal nerve (external branch and internal branch)
pharyngeal nerve
recurrent (inferior) laryngeal nerve

42
Q

the external branch of the superior laryngeal nerve from the vagus nerve goes to:

A

cricothyroid muscles

root of the tongue

43
Q

the internal branch of the superior laryngeal nerve from the vagus nerve goes to:

A

passes through the thryohyoid membrane

  • sensory to the laryngeal mucosa above true vocal folds
  • important for cough reflexes
44
Q

pharyngeal branch of the vagus nerve passes:

A

between the carotid arteries

45
Q

the right recurrent laryngeal nerve loops around:

A

brachiocephalic trunk

46
Q

the left recurrent laryngeal nerve looks around:

A

the aortic arch

47
Q

passes through the thryohyoid membrane

  • sensory to the laryngeal mucosa above true vocal folds
  • important for cough reflexes
A

internal branch of the superior laryngeal nerve from the vagus nerve

48
Q

cranial nerve 11

A

accessory nerve

49
Q

the accessory nerve travels where and innervates which muscles?

A

enters deep surface of sternocleidomastoid muscle high in the neck, innervates that muscles, then crosses the posterior triangle to supply the trapezius

Anatomy (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions