Triangles of the Neck Flashcards Preview

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Flashcards in Triangles of the Neck Deck (34):
1

What are the Superior Posterior and Anterior boundaries of the Muscular Triangle?

Superior:
Superior belly of the omohyoid muscle
 Posterior:
Lower part of Sternocleidomastoid muscle
Anterior:
Mid-line of the neck

 

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2

What are the major contents of the muscular triangle?

(4 things) 

Infrahyoid muscles
Thyroid and Cricoid cartilage

Thyroid gland

Trachea

3

What are the boundaries of the carotid triangle?

 Anterior: Superior belly of the Omohyoid muscle
 Superior: Posterior belly of Digastric muscle
 Posterior: Anterior border of Sternocleidomastoid (SCM) muscle
• Floor: Thyrohyoid muscle, Middle, and inferior pharyngeal constrictor muscles

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4

What are the major contents of the carotid triangle?

(6 Things) 

Bifurcation of the common carotid artery Initial distributions of the external carotid artery Vagus nerve (CN X)
Hypoglossal nerve (CN XII)
Internal jugular vein
Superior and Inferior roots of Ansa Cervicalis

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5

What are the 5 branches of the external carotid artery found in the neck ?

 Facial artery
 Lingual artery
 Superior thyroid artery
 Occipital artery
 Ascending pharyngeal artery

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6

What are the two major blood sources in the neck?

Come from two major sources: 1. Carotid system
2. Subclavian system
A. COMMON CAROTID ARTERY
 Internal carotid artery: No branches in the neck  External carotid artery: 8 Branches:
(5 branches in the neck)

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7

What are the three main points discusses about the carotid Sinus in class?

Carotid sinus
 Dilatation at the distal end of the internal carotid artery
 A barorecptor and as such it senses changes in blood pressure
Receives sensory innervation from the glossopharyngeal nerve (CN IX)

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8

What are the three main points discussed about the carotid body in lecture?

Carotid body
Vascular structure that lies within the angle formed by the internal and external carotid arteries
A chemoreceptor and as such it senses changes in the oxygen content of the blood
Receives sensory innervation from glossopharyngeal (CN IX) and vagus nerves

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9

Where are three places to check a pulse in the head and neck?

Common Carotid Artery Facial Artery
Superficial Temporal Artery

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10

Describe the deep venous system of the neck 

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11

If you ahd to draw blood from the neck or administer IV fluids where would you do it?

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12

What are the superficial cutaneous branches of the cervical plexus?

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13

What are the two deep motor branches?

Deep (motor) branches
C1–C3: Ansa cervicalis C3–C5: Phrenic Nerve

14

What are the three superior branches of the vagus nerve?

Superiorly:
1. Pharyngeal branches
2. Superior laryngeal nerve with two branches:
a. The Internal laryngeal nerve b. The External laryngeal nerve

15

What are the inferior branches of the vagus 

Inferiorly:
3. Recurrent laryngeal nerve. a. Inferior laryngeal nerve

16

What are the three sympathetic ganglia that distribute to the neck?

Superior cervical ganglion.
To C1-C4 spinal nerves via gray rami
Middle cervical ganglion.
To C5-C6 spinal nerves via gray rami
Inferior cervical ganglion.
To C7-T1 spinal nerves via gray rami
(also called stellate or cervicothoracic ganglia)

17

Where are the sympathetic ganglia of the neck?

Lies posterior to the carotid sheath and superficial to the prevertebral fascia.

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18

What are the two arteries that supply bood to the thyroid gland?

Superior thyroid artery First branch of the external carotid
artery.
Inferior thyroid artery Branch of the thyrocervical trunk

19

Where is the thyroid?

Describe its fascial layers

What joins the two lobes?

Thyroid gland

 Large and unpaired endocrine gland

 Lies deep to the infrahyoid muscles

 Two lobes joined by an isthmus that crosses
the midline at 2nd and 3th tracheal rings

 Covered by pretracheal fascia of the deep
cervical fascia

20

What is Horners syndrome?

What are the two causes?

Horner’s syndrome is a clinical syndrome caused by damage to the sympathetic nervous system in the neck due to lesion or compression on one side of the thoracic or cervical sympathetic chain

Causes
1. Pancoast tumor (tumor in the apex of the lung) 2. Thyrocervical venous dilatation

21

What are the clinical features of horners syndrome?

Clinical Features

• Miosis
• Ptosis

22

What are the bounderies of the submental triangel?

Boundaries

 Lateral borders:
Anterior bellies if the digastric muscle

 Superior:
Inferior margins of the mandible

 Inferior:
Body of the hyoid bone

 Floor:
Medial portions of the mylohyoid muscle

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23

What are the boundaries of the submandibular triangle?

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24

What are the 4 divisions of the anterior cervical triangle?

Submandibular triangle (paired)

Submental triangle (unpaired)

Muscular triangle (paired)

Carotid triangle (paired)

25

 What are the two fascial spaces of the neck?

Pretracheal space
Between the neck and the anterior part of the superior mediastinum.

Retropharyngeal space
Between the base of the skull and the upper part of the posterior mediastinum.

26

Name the Marked Features

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27

(Not Perfect) Name this stuff

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28

 What are the three fascial compartments of the neck?

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29

What are the two fascial spaces of the neck?

 

Which of these is dangerous for infection like if you had to do a trachietomy with an unsterile instrument

Pretrachial space- Between the neck and the superior part of the mediasteinum 

 

Retrotrachial Space- Between the base of the skull and the upper part of the posterior mediastinum 

 

Retrotrachial space = The Danger Zone 

30

What are the two venous system sof the superficial neck?

What Facial Layer are they contained in?

External Jugular Veins 

Anterior Jugular Veins from the Submental Veins 

Superficial Cervical Fascia

31

What are the two main triangles of the neck 

Anterior And Posterior 

32

What are the subdivisons of the anterior triangle

1. Submandibular

2. Submental 

3. Muscular Triangle 

4.Carotid Triangle 

33

What are the bounderies of the submental triangle?

Boundaries
 Lateral borders:
Anterior bellies if the digastric muscle
 Superior:
Inferior margins of the mandible
 Inferior:
Body of the hyoid bone
 Floor:
Medial portions of the mylohyoid muscle

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