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Anatomy > 37. Anterior triangle of the neck > Flashcards

37. Anterior triangle of the neck Flashcards

1
Q

Which muscle divides the anterior and posterior triangles of the neck?

A

Sternocleidomastoid (SCM)

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2
Q

Anterior border of the anterior triangle?

A

Imaginary - on the midline of neck

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3
Q

Posterior border of the anterior triangle?

A

Anterior border of SCM

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4
Q

Base of the anterior triangle?

A

Mandible

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5
Q

What are the 4 divisions within the anterior triangle?

A

Submental
Submandibular
Carotid
Muscular

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6
Q

Which vein is found within the submental division of the anterior triangle?

A

The beginning of the anterior jugular vein

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7
Q 
Name the:
Gland
Artery
Vein 
Sheath 
Nerve
Found within the submandibular division of the anterior triangle of the neck.
A 
Submandibular salivary gland
Facial artery
Facial vein
Carotid sheath
Hypoglossal nerve
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8
Q 
Name the:
Sheath
Artery 
Vein
Nerves
Found within the carotid division of the anterior triangle of the neck.
A 
Carotid sheath
Branches of ECA
IJV
Hypoglossal nerve
Accessory nerve
Vagus nerve
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9
Q

Which 2 muscles are found within the muscular division of the anterior triangle of the neck?

A

Sternohyoid

Sternothryoid

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10
Q

Name the 4 layers of deep cervical fascia within the anterior triangle of the neck (from sup to deep)

A
  1. Investing layer
  2. Pretracheal layer
  3. Prevertebral layer
  4. Alar fascia and carotid sheath
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11
Q

Attachments of platysma?

A

Fascia above pec major and clavicle

To lateral neck and mandible

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12
Q

Innervation of platysma?

A

Facial nerve CNVII

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13
Q

Name the 2 veins found within the anterior triangle

A

Anterior jugular

Internal jugular

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14
Q

Spinal nerve roots of cervical plexus?

A

Anterior rami C1- C4

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15
Q

What types of nerve fibres are the cervical plexus nerves?

A

Somatic motor
Sensory
Sympathetic

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16
Q

Within which layer of fasica is the cervical plexus found?

A

Prevertebral

17
Q

What are the motor branches of the cervical plexus?

A 
Phrenic nerve (C3, C4, C5)
Nerves to gleniohyoid and thyrohyoid (C1, travel with hypoglossal)
Ansa cervicalis (C1, C2, C3)
18
Q

What are the sensory branches of the cervical plexus?

A 
Greater auricular (C2, C3)
Transverse cervical (C2, C3)
Lesser occipital (C2) 
Supraclavicular (C3, C4)
19
Q

Name the suprahyoid muscles (4)

A

Stylohyoid
Digastric
Geniohyoid
Mylohyoid

20
Q

Action of suprahyoid muscles?

A

Raise hyoid bone or depress mandible

21
Q

Innervation of suprahyoid muscles?

A

CNVII - post belly digastric and stylohyoid

CNV3 - ant belly digastric and mylohyoid

C1 via CNXII - geniohyoid

22
Q

Name the infrahyoid muscles? (4)

A

Omohyoid
Sternohyoid
Thyrohyoid
Sternothyroid

23
Q

Action of infrahyoid muscles?

A

Depress hyoid bone and thyroid cartilage

24
Q

Innervation of infrahyoid muscles?

A

Ansa cervicalis

Thyrohyoid - C1 via CNXII

25
Q

From which arteries to the right and left common carotid branch?

A

LCA - arch of aorta

RCA - bracheocephalic trunk

26
Q

What runs within the carotid sheath?

A

Common carotid/ Internal carotid
IJV
Vagus nerve

27
Q

Which 3 branches of the external carotid artery are found in the anterior triangle of the neck?

A

Sup thyroid
Lingual
Facial

28
Q

What are the branches of the subclavian artery??

Very Indignant Tired Individuals Sip Strong Coffee Served Double Daily

A

V - vertebral artery

I - internal thoracic

T- thyrocervical trunk (I - inferior thryoid, S- superficial cervical, S- suprascapular)

C - costocervical (branches: S - superior intercostal, D- deep cervical)

D - Dorsal scapular

29
Q

Innervation of larynx?

A

Recurrent laryngeal branches of vagus

30
Q

Describe the course of the recurrent laryngeal nerves

A

R - around subclavian artery

L - around arch of aorta

31
Q

Is vagus nerve sympathetic or parasympathetic to thorax and abdo?

A

Parasympathetic

32
Q

Is thyroid gland endocrine or exocrine?

A

Endocrine

33
Q

What are the 2 lobes of the thyroid?

A

Isthmus

Capsul

34
Q

Where does the thryoid gland extend to and from?

A

Lamina of thyroid cartilage

To 6th tracheal ring

35
Q

Arterial supply of thyroid? Where do these arteries branch from?

A 
Superior thryoid (first anterior branch of ECA)
Inferior thryoid (branch of thyrocervical trunk of subclavian)
36
Q

Venous drainage of thyroid?

A

Superior thyroid
Middle thyroid
Inferior thyroid

37
Q

Into which vein do the R and L inferior thyroid veins drain?

A

Left bracheocephalic then IJV

38
Q

Innervation of submandibular salivary gland?

A

CNVII

Anatomy (49 decks)

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