posterior cervical triangle

Question 1

fascial spaces

Answer 1

carotid sheath
pretracheal space
retropharyngeal space
prevertebral or “danger” space

Question 2

carotid sheath between ____ and ____

Answer 2

SCM; prevertebral muscles

Question 3

infections in carotid sheath can spread from ____ to _____

Answer 3

skull; middle mediastinum

Question 4

pretracheal space between _____ and ____

Answer 4

trachea; infrahyoids

Question 5

pretracheal space extends from ____ to _____

Answer 5

thyroid cartilage; anterior mediastinum

Question 6

retropharyngeal space between ____ and _____

Answer 6

buccopharyngeal; alar fascia

Question 7

retropharyngeal space extends from ____ down into _____

Answer 7

skull base; superior mediastinum

Question 8

prevertebral or danger space between ____ and _____ fascia

Answer 8

alar; prevertebral

Question 9

infections in danger space can spread from ____ to ____ which is at vertebral level ____

Answer 9

skull; posterior mediastinum; T12

Question 10

retropharyngeal space only extends to about ____ vertebral level

Answer 10

T4/T5

Question 11

contents of posterior cervical triangle

Answer 11

platysma m.
external jugular vein
cutaneous nn.
motor nn.
transverse cervical a. and suprascapular a.
deep mm.

Question 12

cutaneous nerves of posterior triangle

Answer 12

lesser occipital (C2-C3)
great auricular (C2-C3)
transverse cervical (C2-C3)
supraclavicular (C3-C4

Question 13

lesser occipital n. runs on the ____ of _____

Answer 13

posterior border; SCM

Question 14

motor nerves of the posterior triangle

Answer 14

accessory n. (CN XI)

phrenic n. (C3,C4,C5)

Question 15

accessory n. supplies:

Answer 15

SCM and trapezius mm.

Question 16

trapezius m. also receives proprioceptive fibers from ___

Answer 16

C3-C4

Question 17

phrenic n. descends vertically along ____ and is crossed anteriorly by ____ and ____

Answer 17

anterior scalene m.; transverse cervical a. and suprascapular a.

Question 18

Phrenic n. enters thorax between ___ and _____

Answer 18

subclavian a. and v.

Question 19

the EJV is formed by the ____ and ____ and then drains into the ____

Answer 19

posterior division of the retromandibular v.
posterior auricular v.
subclavian v.

Question 20

transverse cervical a. and suprascapular a. are branches off the _____

Answer 20

thyrocervical trunk

Question 21

transverse cervical and suprascapular aa. pin down ____ on top of _____

Answer 21

phrenic n. ; anterior scalene m.

Question 22

deep mm. of posterior triangle

Answer 22

splenius capitis m.
levator scapulae m.
anterior/middle/posterior scalene mm.
inferior belly of omohyoid m.

Question 23

A and Inn of splenius capitis m.

Answer 23

A: extends and laterally rotates head and neck
Inn: dorsal rami of spinal nn.

Question 24

A and Inn of levator scapulae m.

Answer 24

A: elevates scapula
Inn: dorsal scapular n. (C5)

Question 25

A and Inn of scalene mm.

Answer 25

A; tilt neck laterally | Inn: ventral rami of C3-C8 nn.

Question 26

interscalene triangle formed by:

Answer 26

anterior/middle scalenes and 1st rib

Question 27

____ and ____ pass through interscalene triangle

Answer 27

brachial plexus; subclavian a.

Question 28

____ passes anterior to anterior scalene m.

Answer 28

subclavian v.

Question 29

superficial fascia is comprised of _____ and ____

Answer 29

loose connective tissue; fat

Question 30

deep fascia is comprised of _____ and is devoid of ___

Answer 30

dense, organized connective tissue; fat

Question 31

lesser occipital n. crosses over portion of _____ and supplies:

Answer 31

occipital a. ; skin of the scalp at the apex of the triangle

Question 32

great auricular n. runs with ____ superiorly toward the ear and supplies:

Answer 32

EJV; lobe and skin posterior to the auricle; also supplies angle of mandible to mastoid process

Question 33

transverse cervical n. supplies:

Answer 33

skin of anterior cervical triangle and lateral neck

Question 34

supraclavicular nerves run superficial to ____ and deep to ____ and supply:

Answer 34

clavicle; platysma ; skin of clavicular region

Question 35

in the lower part of the posterior triangle, EJV pierces the ____ to end in the ____

Answer 35

investing layer of cervical fascia; subclavian v.

Question 36

suprascapular a. goes deep to ____

Answer 36

suprascapular ligament

Question 37

origin and insertion of levator scapulae

Answer 37

O: transverse processes of C1-C4 vertebrae I: superomedial border of scapula

Question 38

interscalene triangle formed by:

Answer 38

anterior scalene, middle scalene and 1st rib

Question 39

____ and ____ pass through interscalene triangle

Answer 39

brachial plexus; subclavian a.

Question 40

____ passes anterior to anterior scalene m.

Answer 40

subclavian v.