Neck 3 - BC

Question 1

Anterior boundary of the posterior triangle

Answer 1

the posterior border of the SCM

Question 2

posterior boundary of the posterior triangle

Answer 2

anterior border of the trapezius

Question 3

inferior boundary of the posterior triangle

Answer 3

middle third of the clavicle

Question 4

roof boundary of the posterior triangle

Answer 4

investing layer of deep cervical fascia

Question 5

floor boundary of the posterior triangle

Answer 5

scalene muscles covered by the prevertebral layer of deep cervical fascia

Question 6

The floor of the posterior
triangle is formed by the
prevertebral fascia overlying the

Answer 6

anterior, middle, and posterior scalene muscles

Question 7

The inferior belly of the omohyoid extends into
the posterior triangle and further subdivides it
into what 2 triangles

Answer 7

occipital triangle

omoclavicular (subclavian) triangle

Question 8

the following are contents of what triangle:

subclavian artery
thyrocervical trunk
- transverse cervical
- suprascapular
Dorsal Scapular
External Jugular Vein
Subclavian Vein

Answer 8

Posterior Triangle

Question 9

the following are contents of what triangle:

Roots of brachial plexus
Cervical plexus
- sensory (GAN, TCN, SCN, LON)
Phrenic Nerve
CN XI

Answer 9

Posterior Triangle

Question 10

Which CN enters the anterior border of the trapezius muscle

Answer 10

CN XI

Question 11

Which CN supplies the SCM and trapezius muscles

Answer 11

CN XI

Question 12

what would a surgeon need to be careful/aware of when dissecting the posterior triangle

Answer 12

spinal accessory nerve –> can cause weakness of shoulder elevation or permanent pain because innervation to the trapezius has been disrupted

Question 13

Base of anterior boundary of the anterior triangle

Answer 13

Inferior mandible

Question 14

Which triangle occupies the anterior neck as an inverted triangle

Answer 14

Anterior Triangle

Question 15

Base of anterior boundary of the anterior triangle

Answer 15

inferior border of mandible

Question 16

Apex boundary of the anterior triangle

Answer 16

manubrium of sternum

Question 17

Anterior boundary of the anterior triangle

Answer 17

midline of neck

Question 18

Posterior boundary of the anterior triangle

Answer 18

SCM

Question 19

Roof boundary of the anterior triangle

Answer 19

skin
superficial fascia of neck
deep investing fascia of neck

Question 20

Floor boundary of the anterior triangle

Answer 20

pharynx
larynx
thyroid gland

Question 21

Lateral boundary of the submental triangle

Answer 21

Right and left anterior belly of the digastric muscles

Question 22

Posterior/inferior boundary of the submental triangle

Answer 22

hyoid bone

Question 23

Superior (floor) boundary of the submental triangle

Answer 23

right and left mylohyoid muscles

Question 24

Inferior (roof) boundary of the submental triangle

Answer 24

investing layer of deep cervical fascia

Question 25

which triangle contains the following: submental lymph nodes small veins that unite to form the anterior jugular vein

Answer 25

Submental Triangle of the Anterior Triangle

Question 26

Medial boundary of the submandibular triangle

Answer 26

anterior belly of the digastric muscle

Question 27

posterior boundary of the submandibular triangle

Answer 27

posterior belly of the digastric muscle

Question 28

lateral boundary of the submandibular triangle

Answer 28

inferior border of the mandible

Question 29

superior (floor) boundary of the submandibular triangle

Answer 29

mylohyoid muscle and hyoglossus muscle

Question 30

inferior (roof) boundary of the submandibular triangle

Answer 30

investing layer of deep cervical fascia

Question 31

which triangle has the following contents: submandibular gland and LNs CN XII CN VII CN V3 facial artery facial vein lingual artery lingual vein

Answer 31

Submandibular Triangle of the Anterior Triangle

Question 32

what nerve arises from the inferior alveolar nerve

Answer 32

nerve to the mylohyoid (V3)

Question 33

which vein travels superficial to the submandibular gland

Answer 33

facial vein

Question 34

which artery travels deep to the submandibular gland

Answer 34

facial artery

Question 35

Anterior boundary of the carotid triangle

Answer 35

superior belly of the omohyoid muscle

Question 36

Superior (floor) boundary of the carotid triangle

Answer 36

posterior belly of the omohyoid muscle

Question 37

Posterior boundary of the carotid triangle

Answer 37

SCM

Question 38

Superficial (roof) boundary of the carotid triangle

Answer 38

investing layer of deep cervical fascia

Question 39

Which CN travels from the jugular foramen into the mediastinum

Answer 39

CN X

Question 40

Which CN travels within the carotid sheath posterior to & in between the internal jugular vein and common carotid artery through the carotid triangle

Answer 40

CN X

Question 41

Which CN enters the submandibular triangle deep to the posterior belly of the digastric muscle to supply the intrinsic and most extrinsic muscles of the tongue

Answer 41

CN XII

Question 42

Which CN carries hitch hiking C1 spinal nerve fibers that form the superior root of the ansa cervicalis and then a C1 branch to thyrohyoid and geniohyoid muscle

Answer 42

CN XII

Question 43

What is usually is embedded in the anterolateral aspect of the carotid sheath

Answer 43

ansa cervicalis

Question 44

superolateral boundary of the muscular triangle

Answer 44

superolateral border of superior belly of omohyoid muscle

Question 45

inferolateral boundary of the muscular triangle

Answer 45

anterior border of SCM

Question 46

midline boundary of the muscular triangle

Answer 46

median plane of the neck

Question 47

superficial boundary of the muscular triangle

Answer 47

investing layer of deep cervical fascia

Question 48

which triangle contains the following: infrahyoid muscles cervical viscera - esophagus - larynx - thyroid cartilage - cricoid cartilage Trachea Thyroid Glands Parathyroid Glands Transverse Cervical Nerves Branches of Ansa Cervicalis Anterior Jugular Veins Superior Thyroid Arteries Superior Thyroid Veins Middle Thyroid Veins Inferior thyroid arteries Inferior thyroid veins Recurrent Laryngeal Nerves

Answer 48

Muscular Triangle of the Anterior Triangle