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HAE W14 Quiz 2 > Triangles of the neck > Flashcards

Triangles of the neck Flashcards

(47 cards)

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1
Q

palpable structures in the neck

A

hyoid bone, thyroid cartilage, cricoid cartilage, trachea

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2
Q

is the thyroid gland palpable?

A

no

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3
Q

Platysma O, I, N, A

A

O: undersurface of skin of lower neck + lateral chest
I: lower border of the mandible and kin of the lower face and angle of the mouth
N: CN VII - facial nerve
A: muscle of facial expression

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4
Q

Superficial muscles of the neck (3)

A

SCM, Trapezius, Platysma

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5
Q

SCM O, I, N, A

A

O: two heads on manubrium
I: lateral aspect of the mastoid process of the temporal bone
N: CN XI - accessory nerve
A: Turn head to OPPOSITE side

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6
Q

Trapezius innervation

A

CN XI - accessory nerve

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7
Q

3 deep fascias of the cervical region

A
  1. investing - most superficial, splits to encompass trapezius and SCM
  2. visceral - surrounds larynx, trachea, esophagus and thyroid gland
  3. prevertebral - forms collar around vertebral column and deep muscles assoc.
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8
Q

carotid sheath surrounds what 4 things?

A

fascial sheath around

  1. carotid artery
  2. internal jugular vein
  3. vagus nerve
  4. deep cervical lymph nodes
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9
Q

What action do the infrahyoid and supra hyoid muscles do together?

A

produce movements of larynx nec. for swallowing and speaking

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10
Q

Infrahyoid muscles (4)

A
  1. omohyoid
  2. sternohyoid
  3. sternothyroid
  4. thyrohyoid
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11
Q

suprahyoid muscles (4)

A
  1. anterior digastric
  2. posterior digastric
  3. stylohyoid
  4. mylohyoid
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12
Q

action of infrahyoid muscles

A

depress hyoid bone

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13
Q

action of suprahyoid muscles

A

elevate hyoid bone

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14
Q

Borders of anterior triangle

A

anterior border of SCM, inferior border of mandible, midline

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15
Q

4 triangles that are subdivisions of the anterior triangle

A
  1. submental
  2. submandibular
  3. carotid triangle
  4. muscular triangle
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16
Q

Submental triangle borders

A

anterior bellies of two digastric muscles, hyoid bone

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17
Q

submental triangle contents and floor

A

Contents: submental lymph nodes
Floor: mylohyoid muscles

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18
Q

submandibular triangle borders and floor

A

Borders: anterior and posterior bellies of digastric muscles, mandible
Floor: mylohyoid

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19
Q

Submandibular triangle contents (5)

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A
  1. submandibular salivary gland and duct
  2. portions of facial vessels
  3. CN XII - hypoglossal nerve
  4. CN V - nerve to mylohyoid muscle
  5. lymph nodes
20
Q

carotid triangle borders

Study These Flashcards
A

superior belly of the omohyoid muscle, posterior belly of digastric, anterior border of SCM

21
Q

Carotid triangle contents (5 in carotid sheath, 2 outside)

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A 
Encased by carotid sheath
1. common carotid artery + bifurcation
2. internal jugular vein
3. CN X - vagus nerve
4. carotid body and carotid sinus
5. deep cervical lymph nodes
Outside of carotid sheath
1. portion of CN XII - hypoglossal nerve
2. portion of cervical plexus and ansa cervicalis
22
Q

Right common carotid is the terminal branch of …

Study These Flashcards
A

brachiocephalic trunk

23
Q

Left common carotid originates from…

Study These Flashcards
A

arch of the aorta

24
Q

Branchpoint of common carotid arteries

Study These Flashcards
A

at level of superior border of thyroid cartilage –> external and internal carotid arteries

25
what areas does the internal carotid artery supply?
no branches in neck, supplies brain, orbit, forehead
26
what areas does the external carotid artery supply?
upper neck, face and scalp w/ assoc. structures
27
branches of external carotid artery and what they supply: inferior --> superior (8)
1. superior thyroid --> thyroid gland and larynx 2. ascending pharyngeal --> pharynx 3. lingual --> tongue 4. facial --> submandibular gland, palatine tonsil, lower face 5. occipital --> posterior scalp 6. posterior auricular --> posterior to ear, supplies scalp 7. maxillary --> infratemporal and pterygopalatine fossa, nasal cavity and palate 8. superficial temporal --> anterior to ear, supplies scalp
28
Where is the carotid sinus located and what does it sense?
Location: dilation of proximal ICA Function: baroreceptor sensitive to BP
29
Where is the carotid body located and what does it sense?
Location: crotch b/t ICA and ECA Function: senses PO2 and PCO2
30
Where do the afferents from carotid sinus and body travel?
CN IX - glossopharyngeal nerve
31
Major veins of neck (2)
1. IJV | 2. EJV
32
course of EJV
descends superficial to SCM, empties into subclavian vein
33
course of IJV
descends from skull w/in carotid sheath, converges w/ subclavian to form brachiocephalic vein
34
phrenic nerve course through neck
descends along anterior surface on anterior scalene muscle deep to prevertebral fascia and SCM
35
muscular triangle borders
hyoid bone, superior belly of omohyoid muscle, anterior border of SCM, midline
36
Contents of muscular triangle
4 infrahyoid/strap muscles 1. omohyoid 2. sternohyoid 3. sternothyroid 4. thyrohyoid
37
innervations of strap muscles
- omohyoid, sternohyoid, sternothyroid = ansa cervicalis of cervical plexus - thyrohyoid = nerve fibers from C1
38
posterior triangle borders, roof, floor
Borders: posterior border of SCM anteriorly, anterior border of trapezius posteriorly, mid-clavicle inferiorly Roof: cervical investing fascia Floor: prevertebral fascia
39
what artery can be palpated in most inferior aspect of posterior triangle?
third portion of subclavian
40
muscles deep to floor of posterior triangle (superior --> inferior)
splenius capitis, levator scapulae, posterior, middle, anterior scalenes, transverse to inferior belly of omohyoid
41
Contents of posterior triangle - vessels
1. third portion of subclavian artery + its branches 2. subclavian vein and EJV 3. transverse cervical and suprascapular arteries
42
Contents of posterior triangle - nerves (3)
1. accessory nerve 2. some branches of cervical plexus 3. roots/trunks of the brachial plexus
43
cervical plexus formed by ...
ventral rami C1-C4
44
what area/muscles does the cervical plexus supply?
- neck muscles and diaphragm (via phrenic) | - area of skin on head, neck, chest
45
what muscles are innervated by ansa cervicalis
sternohyoid, sternothyroid, omohyoid
46
superficial nerves of cervical plexus (4)
``` Emerging from one location on posterior aspect of SCM: 1. transverse cervical 2. supraclavicular 3. great auricular From different spot: 4. lesser occipital ```
47
lymph drainage from neck
superficial cervical lymph nodes w/ EJV --> deep cervical lymph nodes w/ IJV

HAE W14 Quiz 2 (5 decks)

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