Neck 3 - BC Flashcards

1
Q

Anterior boundary of the posterior triangle

A

the posterior border of the SCM

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2
Q

posterior boundary of the posterior triangle

A

anterior border of the trapezius

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3
Q

inferior boundary of the posterior triangle

A

middle third of the clavicle

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4
Q

roof boundary of the posterior triangle

A

investing layer of deep cervical fascia

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5
Q

floor boundary of the posterior triangle

A

scalene muscles covered by the prevertebral layer of deep cervical fascia

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6
Q

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

A

anterior, middle, and posterior scalene muscles

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7
Q

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

A

occipital triangle

omoclavicular (subclavian) triangle

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8
Q

the following are contents of what triangle:

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

A

Posterior Triangle

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9
Q

the following are contents of what triangle:

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

A

Posterior Triangle

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10
Q

Which CN enters the anterior border of the trapezius muscle

A

CN XI

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11
Q

Which CN supplies the SCM and trapezius muscles

A

CN XI

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12
Q

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

A

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

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13
Q

Base of anterior boundary of the anterior triangle

A

Inferior mandible

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14
Q

Which triangle occupies the anterior neck as an inverted triangle

A

Anterior Triangle

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15
Q

Base of anterior boundary of the anterior triangle

A

inferior border of mandible

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16
Q

Apex boundary of the anterior triangle

A

manubrium of sternum

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17
Q

Anterior boundary of the anterior triangle

A

midline of neck

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18
Q

Posterior boundary of the anterior triangle

A

SCM

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19
Q

Roof boundary of the anterior triangle

A

skin
superficial fascia of neck
deep investing fascia of neck

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20
Q

Floor boundary of the anterior triangle

A

pharynx
larynx
thyroid gland

21
Q

Lateral boundary of the submental triangle

A

Right and left anterior belly of the digastric muscles

22
Q

Posterior/inferior boundary of the submental triangle

A

hyoid bone

23
Q

Superior (floor) boundary of the submental triangle

A

right and left mylohyoid muscles

24
Q

Inferior (roof) boundary of the submental triangle

A

investing layer of deep cervical fascia

25
Q

which triangle contains the following:

submental lymph nodes
small veins that unite to form the anterior jugular vein

A

Submental Triangle of the Anterior Triangle

26
Q

Medial boundary of the submandibular triangle

A

anterior belly of the digastric muscle

27
Q

posterior boundary of the submandibular triangle

A

posterior belly of the digastric muscle

28
Q

lateral boundary of the submandibular triangle

A

inferior border of the mandible

29
Q

superior (floor) boundary of the submandibular triangle

A

mylohyoid muscle and hyoglossus muscle

30
Q

inferior (roof) boundary of the submandibular triangle

A

investing layer of deep cervical fascia

31
Q

which triangle has the following contents:

submandibular gland and LNs
CN XII
CN VII
CN V3
facial artery
facial vein
lingual artery
lingual vein

A

Submandibular Triangle of the Anterior Triangle

32
Q

what nerve arises from the inferior alveolar nerve

A

nerve to the mylohyoid (V3)

33
Q

which vein travels superficial to the submandibular gland

A

facial vein

34
Q

which artery travels deep to the submandibular gland

A

facial artery

35
Q

Anterior boundary of the carotid triangle

A

superior belly of the omohyoid muscle

36
Q

Superior (floor) boundary of the carotid triangle

A

posterior belly of the omohyoid muscle

37
Q

Posterior boundary of the carotid triangle

A

SCM

38
Q

Superficial (roof) boundary of the carotid triangle

A

investing layer of deep cervical fascia

39
Q

Which CN travels from the jugular foramen into
the mediastinum

A

CN X

40
Q

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

A

CN X

41
Q

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

A

CN XII

42
Q

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

A

CN XII

43
Q

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

A

ansa cervicalis

44
Q

superolateral boundary of the muscular triangle

A

superolateral border of superior belly of omohyoid muscle

45
Q

inferolateral boundary of the muscular triangle

A

anterior border of SCM

46
Q

midline boundary of the muscular triangle

A

median plane of the neck

47
Q

superficial boundary of the muscular triangle

A

investing layer of deep cervical fascia

48
Q

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

A

Muscular Triangle of the Anterior Triangle