Neck Region Flashcards

1
Q

superior and inferior limits of neck

A
superior
- inferior angle of mandible
- mastoid process
- external occipital protuberance
inferior
- clavicles
- superior thoracic aperture
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2
Q

hyoid bone located

A

c3

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3
Q

cricoid cartilage located

A

c6

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4
Q

thyroid cartilage located

A

c4 c5 (aka adams apple)

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5
Q

OI of platysma

A

O- fascia and skin over pectorals major and deltoid

I- inferior border of mandible and skin of lower face

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6
Q

FN of platysma

A

F- muscle of facial expression

N - VII

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7
Q

OI of sternocleidomastoid

A

O-

    • sternal head- round tendon attaching to manubrium
  • – clavicular head- superior surface of medial 1/3 of clavicle

I- lateral surface of mastoid process , superior nuchal line of occipital bone

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8
Q

NF of sternocleidomastoid

A

N
Spinal roots XI (accessory nerve)
branches c2 c3

F
tilt head laterally, turn to opposite side
flex neck (both muscles_

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9
Q

OI trapezius

A

o
– superior nuchal line, ligament nuchal spinous process c7 t1-t12
I- lateral 1/3 of clavicle spine of scapula acromion process

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10
Q

FN trapezius

A

N- XI (accessory spinal nerve ) C3 c4

F - elevates/ depresses and rotates scapula,

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11
Q

whats above/ below sternocleidomastoid

A

above- superficial jugular

below - deep jugular

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12
Q

boundaries of posterior cervical triangle

A

Anterior- posterior part of SCM
posterior- anterior part of trapezius
inferior- clavicle

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13
Q

what passes over the apex of the posterior cervical triangle***

A

apex- is at superior nuchal line

– the occipital artery (before it goes to posterior aspect of head

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14
Q

floor of post cervical triangle***

A
  • splenious capitus
  • levator scapula
  • scalene -post
  • scalene- mid
  • scalene ant
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15
Q

what goes between anterior and middle scalene*

A
  • brachial plexus

on post triangle

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16
Q

post occipital triangle is divided into 2 triangles (name them) by _____

A
  • occipital triangle
  • supraclavicular/omoclavicular/ or subclavian

by the inferior belly of omohyoid muscle

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17
Q

Veins of post cervical triangle***

A

– external* jugular vein
—— posterior division of retromandibular
—– posterior auricular veins
- subclavian vein
(drains face scalp and exterior of cranium)

18
Q

retromandibular vein formed by**

A

union of superficial temporal and maxillary vein

19
Q

nerves of post cervical triangle***

A
  • XI (between SCM and trapezius)
  • brachial plexus (between ant scalene and middle scalene)
  • cervical plexus
20
Q

cervical plexus (what it is and location***)

A

VENTRAL RAMI c1-c4

located DEEP to internal jugular vein and SCM

21
Q

branches of cervical plexus

A
  • lesser occipital nerve (c2)
  • greater auricular nerve (c2-c3)
  • transverse cervical cutaneous nerve (c2-c3)
  • supraclavicular nerve (c3-c4)
  • phrenic nerve (c3 c4 c5)
  • ansa cervicali
22
Q

importance of greater auricular nerve**

A

C2-C3
accompanies External Jugular Vein
supplies skin over the angle of the mandible

23
Q

importance of supraclavicular nerve***

A

c3-c4
divides into medial intermediate and lateral branches

  • medial branch supplies sternoclavicular joint
  • lateral branch supplies acromioclavicular joint
24
Q

importance of ansa cervicalis (location)**

A

loop from cervical plexus

  • supplies infra hyoid muscles of neck
  • embedded in carotid sheath but NOT a content of the sheath
25
Q

boundaries of anterior cervical triangle

A

Ant- median line of neck
post- anterior border of SCM
superior- inferior border of mandible

apex is at jugular notch

26
Q

supra hyoid muscles

A
  • connect hyoid bone to skull
  • mylohyoid V
    stylohyoid VII
    geniohyoid XII
    digastric
27
Q

digastric muscle** Bellies and innervation

A

Anterior belly from fossa of mandible ( innervated by nerve to mylohyoid V)

posterior belly from mastoid process ( VII)

28
Q

innervation of thyrohyoid muscle**

A

C1 fibers of CN XII

29
Q

carotid sheath surrounds what*

A
  • internal jugular vein
  • deep cervical LN
  • vagus nerve
  • common carotid artery
  • internal carotid artery
30
Q

what is embedded in the carotid sheath*

A

ansa cervicalis,

other structures are within the sheath

31
Q

where does the common carotid artery divide into internal and external carotid arteries***

A

at level of thyroid cartilage C4 C5

32
Q

carotid sinus

A

dilation of proximal part of ICA , innervated by IX and X

- baroreceptor that regulates blood pressure

33
Q

carotid body

A

mass of tissue at bifurcation of common carotid

- chemoreceptor (responds to increase of C02 or decrease in PH)

34
Q

superficial cervical fascia encloses*

A

platysma muscle of facial expression

35
Q

superficial layer of deep cervical fascia splits where and covers what***

A

splits at mandible

  • covers masseter laterally
  • medial surface of medial pterygoid
36
Q

superficial layer of deep cervical fascia enclose*

A
SCM
trapezius
submandibular 
parotid
- forms floor of submandibular space
37
Q

middle layer of deep cervical fascia envelops*

A
thyroid 
trachea
esophagus
larynx
pharynx
38
Q

muscular division of deep cervical fascia*

A

superior border- hyoid and thyroid cartilage
inferior border- sternum clavicle and scapula
envelops infrahyoid strap muscles

39
Q

deep layer of deep cervical fascia* alar layer

A

alar layer

  • superior border- skull / base
  • inferior border- upper mediastinum t1-t2
40
Q

deep layer of deep cervical fascia* pre vertebral layer

A

superior border- skull base
inferior border- coccyx
envelops veterbral bodies and deep muscles of beck
extends laterally as axillary sheath