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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
the facial v. originates at the ____ and receives tributaries from veins draining ____
angle of the eye; face
26
IJV drains blood from _____ and traverses the neck within the _____
skull, brain, superficial face and cervical viscera; carotid sheath
27
IJV joins with the ____ to form the _____
subclavian v; brachiocephalic v.
28
the right common carotid a. comes from the _____
brachiocephalic trunk
29
the left common carotid a. is a _____
direct branch off the arch of the aorta
30
the common carotid a. bifurcates at ____ level
C3-C4 vertebral
31
3 anterior branches of external carotid a.
superior thyroid a. lingual a. facial a.
32
3 posterior branches of external carotid a.
ascending pharyngeal a. occipital a. posterior auricular a.
33
external carotid a. terminates as:
maxillary a. and superficial temporal a.
34
the superior thyroid a. gives off the _____ that pierces the _____ with the _____
superior laryngeal a. ; thyrohyoid membrane; internal branch of the superior laryngeal n.
35
superior thyroid a. supples:
the superior portion of the thyroid gland
36
lingual a. arises just above the superior thyroid a. at the level of the ____ and passes deeply into the ____
greater horn of the hyoid bone; muscles of the tongue
37
facial a. crosses the ____ to supply the face; passes through the _____
inferior border of the mandible; submandibular gland
38
ascending pharyngeal a. supplies the:
pharynx and tonsils
39
occipital a. arises near level of origin of ____; passes deep to _____ and ascends to supply _____
facial a.; posterior belly of digastric m; scalp and neck
40
occipital a. sends off muscular branch to ____ and hooks over _____
SCM ; CN XII
41
posterior auricular a. runs superior to _____; passes upward and posteriorly to supply the _____
posterior belly of digastric ; scalp posterior to the ear
42
carotid sheath contents
common carotid artery, internal carotid artery carotid sinus vagus nerve internal jugular vein
43
carotid sinus is a dilation of internal carotid a. near bifurcation of common carotid a. that contains _____
baroreceptors (receptors that monitor blood pressure changes)
44
spinal nerve branches associated with anterior cervical triangle:
``` transverse cervical n. (C2-C3) ansa cervicalis (C1-C3) ```
45
cranial nerve branches associated with anterior cervical triangle:
``` facial n. glossopharyngeal n. vagus n. accessory n. hypoglossal n. ```
46
what does transverse cervical n. supply?
cutaneous innervation to skin overlying anterior cervical triangle
47
superior root of ansa cervicalis
mainly C1 fibers from anterior rami
48
inferior root of ansa cervicalis
anterior rami of C2 and C3
49
submental triangle borders
inferior: hyoid bone lateral: two anterior bellies of digastric
50
contents of submental triangle
mylohyoid submental lymph nodes some small veins
51
damage to external laryngeal n. during thyroidectomy results in:
paralysis of cricothyroid m. and inferior pharyngeal constrictor m.
52
damage to recurrent laryngeal n. during thyroidectomy
paralysis of intrinsic laryngeal mm. (except for cricothyroid); leads to hoarseness of the voice
53
recurrent laryngeal n. is a branch of the ____
vagus n.
54
3 branches of the subclavian a.
vertebral a. thyrocervical trunk internal thoracic a.
55
thyrocervical trunk arises from the _____, ____ to the anterior scalene m.
subclavian a. ; medial
56
3 branches of the thyrocervical trunk
inferior thyroid a.- gives off ascending cervical a. transverse cervical a. suprascapular a.
57
transverse cervical a. and suprascapular a. cross over _____
anterior surface of anterior scalene m. and phrenic n.
58
vertebral a. is the 1st branch off subclavian, medial to anterior scalene; enters ____ of ____ and passes up to ____
transverse foramen; C6; C1
59
vertebral v. drains into _____ and travels in transverse foramen of ____
brachiocephalic vein; C1-C6
60
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)
cervical plexus; anterior scalene m. ; subclavian vein and artery
61
vagus n. descends through neck in the ____ and provides _____
carotid sheath; all parasympathetic innervation to the neck
62
vagus n. branch is the _____ which ascends in the groove between the ____ and enters the _____
recurrent laryngeal n; trachea and esophagus; larynx
63
recurrent laryngeal n. innervates:
all intrinsic laryngeal mm. (except cricothyroid- inn by external branch of superior laryngeal n.)
64
right recurrent laryngeal n. loops around _____ and upward to larynx
right subclavian a.
65
left recurrent laryngeal n. loops _____ and up to the larynx
below and behind the arch of the arota
66
superior cervical ganglion
high in neck, near level of mastoid process of temporal bone
67
middle cervical ganglion
posterior to thyroid gland
68
inferior cervical ganglion
combines with 1st thoracic ganglion and forms the cervicothoracic (stellate) ganglion
69
thoracic duct is a major lymphatic channel that drains lymph from the ______
LEFT upper limb, left head, left neck, left thorax, abdomen, and both lower limbs
70
thoracic duct lies posterior to ____, between ____ and _____
esophagus; azygos vein; thoracic aorta
71
thoracic duct drains into the ____, which is the _____
left venous angle; junction between the left internal jugular vein and left subclavian vein
72
the right lymphatic duct drains the: | and empties into the :
right head, right neck, and right thorax | right venous angle (junction between right subclavian vein and right internal jugular vein
73
ansa cervicalis is found anterior to the ____; loops up as inferior root, found lateral to ____
carotid sheath; IJV
74
submandibular triangle boundaries
``` superior= inferior border of mandible anterior/inferior = ant belly of digastric posterior/inferior = posterior belly of digastric ```
75
contents of submandibular triangle
``` submandibular gland submandibular lymph nodes facial a. and v. marginal mandibular branch of VII mylohyoid n. (from V3) hypoglossal n. stylohyoid m. ```
76
borders of muscular triangle
``` superior = hyoid bone laterally= superior belly of omohyoid and anterior border of SCM medially= midline of the neck ```
77
contents of muscular triangle
``` infrahyoid muscles thyroid gland/parathyroid glands trachea esophagus common carotid a. IJV ```
78
border of carotid triangle
``` superior= posterior belly of digastric and stylohyoid m. anteroinferiorly = superior belly of omohyoid posteroinferiorly= anterior border of SCM ```
79
nerve contents of carotid triangle
vagus n., laryngeal branches of vagus n., hyoglossal n., accessory n, ansa cervicalis
80
vessels of carotid triangle
common/internal/external carotid, 6 branches of ECA, and IJV

Anatomy II Unit 2 (14 decks)

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