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Anatomy II Unit 2 > anterior cervical triangle > Flashcards

anterior cervical triangle Flashcards

1
Q

the roof of the anterior cervical triangle is formed by ____ and ____ (which is contained within the superficial fascia of the neck)

A

skin; platysma m.

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2
Q

platysma m. innervation

A

cervical branch of the facial nerve (CN VII)

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3
Q

origin and insertion of stylohyoid m.

A

O: styloid process of the temporal bone
I: body of the hyoid bone

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4
Q

A and Inn of stylohyoid m.

A

A: pulls hyoid bone upward in posterosuperior direction
Inn: facial n. (CN VII)

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5
Q

action of digastric m.

A

when mandible is fixed, rasies hyoid bone

when hyoid bone is fixed, lowers the mandible (opens the mouth)

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6
Q

inn of digastric m.

A

anterior belly by mandibular division of trigeminal (mylohyoid branch)
posterior belly by CN VII (facial n.)

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7
Q

action of mylohyoid m.

A

supports and elevates floor of the mouth; elevates hyoid bone

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8
Q

inn of mylohyoid m.

A

mandibular division of CN V (mylohyoid branch)

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9
Q

action of geniohyoid m.

A

mandible fixed- pulls hyoid bone up and forward

hyoid bone fixed- lowers mandible and pulls it inward

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10
Q

inn of geniohyoid m.

A

branch from anterior ramus of C1 carried via hypoglossal n.

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11
Q

action of sternohyoid m.

A

depresses hyoid bone after swallowing

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12
Q

inn of sternohyoid m.

A

anterior rami of C1-C3 via ansa cervicalis

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13
Q

action of omohyoid m.

A

depresses and fixes the hyoid bone

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14
Q

innervation of omohyoid m.

A

anterior rami of C1-C3 via ansa cervicalis

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15
Q

action of thyrohyoid m.

A

depresses hyoid bone

when hyoid is fixed it raises the larynx

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16
Q

innervation of thyrohyoid m.

A

fibers from anterior ramus of C1 carried via hypoglossal n. (nerve to thyrohyoid m.)

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17
Q

action of sternothyroid m.

A

draws larynx (thyroid cartilage) downward

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18
Q

innervation of sternothyroid m.

A

anterior rami of C1-C3 via ansa cervicalis

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19
Q

____ drains the anterior neck, located in the midline

A

anterior jugular vein

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20
Q

anterior jugular vein empties into the ____(most commonly) or the _____

A

subclavian vein; external jugular vein

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21
Q

communicating branch connects the ____ with the ____

A

common facial vein; anterior jugular vein

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22
Q

retromandibular vein is formed by the ____ and _____

A

superficial temporal v. ; maxillary vein

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23
Q

the anterior division of the retromandibular vein plus the ____ form the _____ which drains into the _____

A

facial vein; comon facial vein; internal jugular vein

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24
Q

the posterior division of the retromandibular vein plus the _____ form the _____

A

posterior auricular vein; external jugular vein

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25
Q

the facial v. originates at the ____ and receives tributaries from veins draining ____

A

angle of the eye; face

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26
Q

IJV drains blood from _____ and traverses the neck within the _____

A

skull, brain, superficial face and cervical viscera; carotid sheath

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27
Q

IJV joins with the ____ to form the _____

A

subclavian v; brachiocephalic v.

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28
Q

the right common carotid a. comes from the _____

A

brachiocephalic trunk

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29
Q

the left common carotid a. is a _____

A

direct branch off the arch of the aorta

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30
Q

the common carotid a. bifurcates at ____ level

A

C3-C4 vertebral

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31
Q

3 anterior branches of external carotid a.

A

superior thyroid a.
lingual a.
facial a.

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32
Q

3 posterior branches of external carotid a.

A

ascending pharyngeal a.
occipital a.
posterior auricular a.

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33
Q

external carotid a. terminates as:

A

maxillary a. and superficial temporal a.

34
Q

the superior thyroid a. gives off the _____ that pierces the _____ with the _____

A

superior laryngeal a. ; thyrohyoid membrane; internal branch of the superior laryngeal n.

35
Q

superior thyroid a. supples:

A

the superior portion of the thyroid gland

36
Q

lingual a. arises just above the superior thyroid a. at the level of the ____ and passes deeply into the ____

A

greater horn of the hyoid bone; muscles of the tongue

37
Q

facial a. crosses the ____ to supply the face; passes through the _____

A

inferior border of the mandible; submandibular gland

38
Q

ascending pharyngeal a. supplies the:

A

pharynx and tonsils

39
Q

occipital a. arises near level of origin of ____; passes deep to _____ and ascends to supply _____

A

facial a.; posterior belly of digastric m; scalp and neck

40
Q

occipital a. sends off muscular branch to ____ and hooks over _____

A

SCM ; CN XII

41
Q

posterior auricular a. runs superior to _____; passes upward and posteriorly to supply the _____

A

posterior belly of digastric ; scalp posterior to the ear

42
Q

carotid sheath contents

A

common carotid artery, internal carotid artery
carotid sinus
vagus nerve
internal jugular vein

43
Q

carotid sinus is a dilation of internal carotid a. near bifurcation of common carotid a. that contains _____

A

baroreceptors (receptors that monitor blood pressure changes)

44
Q

spinal nerve branches associated with anterior cervical triangle:

A 
transverse cervical n. (C2-C3)
ansa cervicalis (C1-C3)
45
Q

cranial nerve branches associated with anterior cervical triangle:

A 
facial n.
glossopharyngeal n.
vagus n. 
accessory n. 
hypoglossal n.
46
Q

what does transverse cervical n. supply?

A

cutaneous innervation to skin overlying anterior cervical triangle

47
Q

superior root of ansa cervicalis

A

mainly C1 fibers from anterior rami

48
Q

inferior root of ansa cervicalis

A

anterior rami of C2 and C3

49
Q

submental triangle borders

A

inferior: hyoid bone
lateral: two anterior bellies of digastric

50
Q

contents of submental triangle

A

mylohyoid
submental lymph nodes
some small veins

51
Q

damage to external laryngeal n. during thyroidectomy results in:

A

paralysis of cricothyroid m. and inferior pharyngeal constrictor m.

52
Q

damage to recurrent laryngeal n. during thyroidectomy

A

paralysis of intrinsic laryngeal mm. (except for cricothyroid); leads to hoarseness of the voice

53
Q

recurrent laryngeal n. is a branch of the ____

A

vagus n.

54
Q

3 branches of the subclavian a.

A

vertebral a.
thyrocervical trunk
internal thoracic a.

55
Q

thyrocervical trunk arises from the _____, ____ to the anterior scalene m.

A

subclavian a. ; medial

56
Q

3 branches of the thyrocervical trunk

A

inferior thyroid a.- gives off ascending cervical a.
transverse cervical a.
suprascapular a.

57
Q

transverse cervical a. and suprascapular a. cross over _____

A

anterior surface of anterior scalene m. and phrenic n.

58
Q

vertebral a. is the 1st branch off subclavian, medial to anterior scalene; enters ____ of ____ and passes up to ____

A

transverse foramen; C6; C1

59
Q

vertebral v. drains into _____ and travels in transverse foramen of ____

A

brachiocephalic vein; C1-C6

60
Q

phrenic nn. (C3-C5) are branches of the _____; pass inferiorly along anterior surface of _____; pass between ____ , enter thorax and continue to the diaphragm (motor and sensory)

A

cervical plexus; anterior scalene m. ; subclavian vein and artery

61
Q

vagus n. descends through neck in the ____ and provides _____

A

carotid sheath; all parasympathetic innervation to the neck

62
Q

vagus n. branch is the _____ which ascends in the groove between the ____ and enters the _____

A

recurrent laryngeal n; trachea and esophagus; larynx

63
Q

recurrent laryngeal n. innervates:

A

all intrinsic laryngeal mm. (except cricothyroid- inn by external branch of superior laryngeal n.)

64
Q

right recurrent laryngeal n. loops around _____ and upward to larynx

A

right subclavian a.

65
Q

left recurrent laryngeal n. loops _____ and up to the larynx

A

below and behind the arch of the arota

66
Q

superior cervical ganglion

A

high in neck, near level of mastoid process of temporal bone

67
Q

middle cervical ganglion

A

posterior to thyroid gland

68
Q

inferior cervical ganglion

A

combines with 1st thoracic ganglion and forms the cervicothoracic (stellate) ganglion

69
Q

thoracic duct is a major lymphatic channel that drains lymph from the ______

A

LEFT upper limb, left head, left neck, left thorax, abdomen, and both lower limbs

70
Q

thoracic duct lies posterior to ____, between ____ and _____

A

esophagus; azygos vein; thoracic aorta

71
Q

thoracic duct drains into the ____, which is the _____

A

left venous angle; junction between the left internal jugular vein and left subclavian vein

72
Q

the right lymphatic duct drains the:

and empties into the :

A

right head, right neck, and right thorax

right venous angle (junction between right subclavian vein and right internal jugular vein

73
Q

ansa cervicalis is found anterior to the ____; loops up as inferior root, found lateral to ____

A

carotid sheath; IJV

74
Q

submandibular triangle boundaries

A 
superior= inferior border of mandible
anterior/inferior = ant belly of digastric
posterior/inferior = posterior belly of digastric
75
Q

contents of submandibular triangle

A 
submandibular gland
submandibular lymph nodes
facial a. and v.
marginal mandibular branch of VII
mylohyoid n. (from V3)
hypoglossal n. 
stylohyoid m.
76
Q

borders of muscular triangle

A 
superior = hyoid bone
laterally= superior belly of omohyoid and anterior border of SCM
medially= midline of the neck
77
Q

contents of muscular triangle

A 
infrahyoid muscles 
thyroid gland/parathyroid glands
trachea
esophagus
common carotid a. 
IJV
78
Q

border of carotid triangle

A 
superior= posterior belly of digastric and stylohyoid m.
anteroinferiorly = superior belly of omohyoid
posteroinferiorly= anterior border of SCM
79
Q

nerve contents of carotid triangle

A

vagus n., laryngeal branches of vagus n., hyoglossal n., accessory n, ansa cervicalis

80
Q

vessels of carotid triangle

A

common/internal/external carotid, 6 branches of ECA, and IJV

Anatomy II Unit 2 (14 decks)

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