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NYCC Gross Anatomy 3 > Carotid & Muscular (Anterior) Triangles > Flashcards

Carotid & Muscular (Anterior) Triangles Flashcards

1
Q

what forms the boundaries of the carotid triangle?

A
  • superior belly of omohyoid
  • posterior belly of digastric
  • anterior border of SCM
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2
Q

location of common carotid artery bifurcation

A

at superior border of thyroid cartilage (C3-C4)

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3
Q

describe the carotid sinus

A
  • dilation at bifurcation and into internal carotid a
  • baroreceptor innervated by CN IX and X SNS
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4
Q

describe the carotid body

A
  • small dark mass of tissue on deep side of bifurcation
  • chemoreceptor innervated by CN IX and X SNS
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5
Q

name the contents of the carotid sheath

A
  • carotid aa (medial)
  • internal jugular v (lateral)
  • CN X: vagus (posterior)
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6
Q

what lymph nodes are located in the carotid triangle?

A

deep cervical

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7
Q

the common carotid artery is located in the ____ triangle

A

carotid

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8
Q

where is the carotid sinus located?

A

at bifurcation of common carotid a

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9
Q

describe the location of ansa cervicalis

A

embedded in fascia of anterolateral aspect of carotid sheath

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10
Q

how many branches does the internal carotid artery give in the neck?

A

NONE

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11
Q

how many branches does the external carotid artery give in the neck?

A

6 branches & 2 terminal branches

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12
Q

name the branches of the external carotid artery

A
  • superior thyroid a
  • ascending pharyngeal a
  • lingual a
  • facial a
  • occipital a
  • posterior auricular a
  • maxillary a
  • superficial temporal a
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13
Q

the superior laryngeal artery is a branch of what artery?

A

superior thyroid a

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14
Q

the cervical plexus contains ____ rami of ____

A

ventral
C1-C4

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15
Q

what forms the loops of the cervical plexus?

A

C2-C4 divide into ascending & descending branches that unite with the branches of adjacent nn to form loops

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16
Q

the cervical plexus lies anteromedial to what muscles?

A

levator scapulae & middle scalene

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17
Q

the cervical plexus lies posterior to what muscle?

A

SCM

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18
Q

superficial branches of the cervical plexus are ____

A

sensory

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19
Q

what joins to form ansa cervicalis?

A

superior root (C1 & C2)
inferior root (C2 & C3)

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20
Q

name the terminal branches of the external carotid artery

A
  • maxillary a
  • superficial temporal a
21
Q

what muscles are innervated by ansa cervicalis?

A
  • omohyoid
  • sternothyroid
  • sternohyoid
22
Q

innervation of thyrohyoid

A

receives C1 fibers that travel with hypoglossal n (n to thyrohyoid)

23
Q

what forms the superior root of ansa cervicalis?

A

C1 & C2 join & descend from hypoglossal n

24
Q

deep branches of the cervical plexus are ____

A

motor

25
Q

long thoracic nerve pierces what muscle?

A

middle scalene

26
Q

location of phrenic nerve

A

lies on surface of anterior scalene m

27
Q

name 3 nervous functions of phrenic nerve

A

motor
sensory
sympathetic

28
Q

vagus nerve is located within the ____

A

carotid sheath

29
Q

name the 2 branches of the superior laryngeal nerve

A
  • internal laryngeal n (sensory)
  • external laryngeal n (motor)
30
Q

the internal laryngeal nerve pierces the ____ with the ____

A

thyrohyoid membrane
superior laryngeal a

31
Q

the external laryngeal nerve travels inferiorly, paralleling ____

A

superior thyroid a

32
Q

cricothyroid is innervated by ____

A

external laryngeal n

33
Q

the cervical sympathetic trunk is located posterior to the ____

A

carotid sheath

34
Q

how many white rami communicantes branch from cervical spinal levels?

A

NONE

35
Q

name the cervical ganglia of the cervical sympathetic trunk

A

superior
middle
inferior

36
Q

the cervical ganglia receive ____ fibers from ____

A

preganglionic
T1-T5

37
Q

postganglionic fibers of the cervical sympathetic trunk travel via ____ to…

A

gray rami communicantes
- spinal nn
- thoracic viscera
- head & neck viscera

38
Q

postganglionic fibers of the cervical sympathetic trunk travel with ____

A

arteries

39
Q

what forms the boundaries of the muscular triangle?

A
  • superior belly of omohyoid
  • anterior border of SCM
  • anterior midline of neck
40
Q

what type of muscles are infrahyoid muscles?

A

strap

41
Q

name the infrahyoid muscles

A
  • sternohyoid
  • omohyoid
  • sternothyroid
  • thyrohyoid
42
Q

cricothyroid is covered with ____

A

larynx

43
Q

what is the only infrahyoid muscle innervated by CN XII?

A

thyrohyoid

44
Q

innervation of sternohyoid, omohyoid, & sternothyroid

A

ansa cervicalis

45
Q

name the pericervical lymph nodes

A
  • submental
  • submandibular
  • parotid
  • mastoid
  • occipital
46
Q

superficial lymph vessels of the neck follow ____, while deep lymph vessels follow ____

A

veins
arteries

47
Q

all lymph vessels of the neck drain into ____ along the ____

A

deep cervical lymph nodes
internal jugular v

48
Q

the carotid sinus & body are located at which vertebral level?

A

C3-C4

49
Q

the omohyoid muscle is innervated by which nerve?

A

ansa cervicalis

NYCC Gross Anatomy 3 (27 decks)

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