The Neck

Question 1

posterior triangle boundaries

Answer 1

sternocleidomastoid
clavicle
trapezius

Question 2

contents of posterior triangle

Answer 2

Spinal Accessory N
Cervical Plexus (C1-4)
Brachial Plexus (C5-T1)
Phrenic N
Intrinsic N's to muscles of the neck
superficial cervical A&V
Suprascapular A&V
External Jugular V

Question 3

Nerves of the cervical plexus

Answer 3

Lesser Occipital (C2)
Great Auricular (C2-3)
Transverse Cervical (cutaneous N) (C2-3)
Supraclavicular N (C3-4)
Ansa Cervicalis (C1-3)
Phrenic N (C3-5)

Question 4

what 2 veins unite to form external jugular vein

Answer 4

posterior division of retromandibular vein

posterior auricular vein

Question 5

what vein does external jugular vein drain into?

Answer 5

subclavian vein

Question 6

what muscle is external jugular vein superficial to

Answer 6

sternocleidomastoid

Question 7

which nerve lies on the anterior part of levator scapulae muscle belly

Answer 7

spinal accessory nerve

Question 8

which nerve rests on the muscle belly of anterior scalene

Answer 8

phrenic

Question 9

what muscles do the roots of the brachial plexus emerge between

Answer 9

anterior and middle scalene

Question 10

muscles of the posterior triangle

Answer 10

levator scapulae
scalenus anterior
scalenus medius
scalenus posterior
inferior belly of omohyoid

Question 11

innervation of scalene muscles

Answer 11

segmental innervation from ventral rami

Question 12

innervation of omohyoid

Answer 12

ansa cervicalis

Question 13

innervation of levator scapulae

Answer 13

segmental innervation from ventral rami

Question 14

innervation of sternocleidomastoid

Answer 14

spinal accessory N

Question 15

what nerve lies on the muscle belly of scalenus medius

Answer 15

long thoracic

Question 16

what nerve emerges between scalenus medius and scalenus posterior

Answer 16

dorsal scapular nerve

Question 17

anterior triangle boundaries

Answer 17

median line of the neck (imaginary)
inferior border of the mandible
sternocleidomastoid

Question 18

subtriangles of anterior triangle

Answer 18

digastric
carotid
muscular

Question 19

boundaries of digastric triangle

Answer 19

anterior belly of digastric
posterior belly of digastric (with stylomastoid)
base of mandible and line drawn from angle of mandible to mastoid process

Question 20

arteries found in digastric triangle

Answer 20

lingual artery
facial artery
submental artery

Question 21

veins found in digastric triangle

Answer 21

anterior division of retromandibular vein
facial vein
common facial vein

Question 22

nerves found in digastric triangle

Answer 22

nerve to mylohyoid
lingual nerve
submandibular ganglion
hypoglossal nerve
glossopharyngeal nerve

Question 23

muscles found in digastric triangle

Answer 23

stylohyoid
mylohyoid
digastric
stylopharyngeus

Question 24

glands found in digastric triangle

Answer 24

submandibular and sublingual salivary glands

Question 25

innervation of anterior belly of digastric

Answer 25

nerve to mylohyoid

Question 26

innervation of posterior belly of digastric

Answer 26

facial N

Question 27

innervation of stylohyoid

Answer 27

facial N

Question 28

innervation of mylohyoid

Answer 28

nerve to mylohyoid

Question 29

what nerve lies on the surface of hyoglossus and genioglossus

Answer 29

hypoglossal N

Question 30

boundaries of carotid triangle

Answer 30

posterior belly of digastric and stylohyoid superior belly of omohyoid sternocleidomastoid

Question 31

contents of carotid triangle

Answer 31

``` carotid sheath external carotid artery common facial vein lingual vein superior laryngeal nerve hypoglossal nerve cervical sympathetic trunk ```

Question 32

contents of the carotid sheath

Answer 32

``` common carotid artery internal carotid artery internal jugular vein ansa cervicalis vagus nerve ```

Question 33

innervation of carotid sinus

Answer 33

glossopharyngeal N

Question 34

function of carotid body

Answer 34

monitors CO2 and O2 in blood | stimulates respiration

Question 35

innervation of carotid body

Answer 35

glossopharyngeal N | vagus N

Question 36

what drains into internal jugular vein

Answer 36

``` sigmoid sinus inferior petrosal sinus common facial vein superior and middle thyroid veins thoracic duct (on L side) ```

Question 37

internal jugular vein joins with

Answer 37

subclavian vein to form brachiocephalic vein

Question 38

nerves of carotid triangle

Answer 38

``` ansa cervicalis vagus hypoglossal spinal accessory glossopharyngeal ```

Question 39

what structure does ansa cervicalis form a loop over

Answer 39

carotid sheath

Question 40

ansa cervicalis formed by

Answer 40

upper root from C1 ventral ramus | lower root from C2-3 ventral rami

Question 41

vagus nerve found between which 2 structures

Answer 41

internal jugular vein and common carotid artery in carotid sheath

Question 42

major branches of vagus N

Answer 42

pharyngeal N superior laryngeal N recurrent laryngeal N

Question 43

where does recurrent laryngeal nerve enter larynx

Answer 43

between inferior pharyngeal constrictor and esophagus

Question 44

where is cervical sympathetic chain located

Answer 44

behind carotid sheath

Question 45

muscular triangle boundaries

Answer 45

superior belly of omohyoid median line of the neck (imaginary) sternocleidomastoid

Question 46

contents of muscular triangle

Answer 46

``` sternohyoid sternothyroid thyrohyoid superior belly of omohyoid anterior jugular vein ```

Question 47

innervation of sternohyoid

Answer 47

ansa cervicalis

Question 48

innervation of sternothyroid

Answer 48

ansa cervicalis

Question 49

innervation of thyrohyoid

Answer 49

hypoglossal N (C1)

Question 50

innervation of omohyoid

Answer 50

ansa cervicalis

Question 51

approximately what spinal level does common carotid artery split into internal and external

Answer 51

C5 | upper border of thyroid cartilage

Question 52

prevertebral muscles

Answer 52

longus coli longus capitus rectus capitus anterior rectus capitus lateralis

Question 53

prevertebral muscles innervated by

Answer 53

ventral rami

Question 54

Branches of 1st part of subclavian artery

Answer 54

Vertebral Thyrocervical Internal thoracic

Question 55

Branches of subclavian artery in second part

Answer 55

Costs cervical trunk (2)

Question 56

Branches off subclavian artery on 3rd part

Answer 56

Dorsal scapular artery

Question 57

Where is 1st part of subclavian artery located

Answer 57

Medial to anterior scalene

Question 58

Where is 2nd part of subclavian artery

Answer 58

Deep to anterior scalene

Question 59

Where is 3rd part of subclavian artery

Answer 59

Lateral to anterior scalene