3-Neck intro brainscape

Question 1

Ascending pharyngeal artery supplies what

Answer 1

Deep aspect of pharynx Palate Tonsils

Question 2

At what point in the spine does the trachea begin

Answer 2

C5/C6

Question 3

Blood drainage of the trachea

Answer 3

Inferior thyroid vein to the brachiocephalic vein

Question 4

Blood supply to the esophage

Answer 4

Inferior thyroid artery

Question 5

Blood supply to the parotid gland

Answer 5

Posterior auricular artery Facial artery Superficial temporal artery

Question 6

Blood supply to the trachea

Answer 6

Superior & Inferior thyroid arteries (from external carotid & thryocervical trunk of brachiocephalic)

Question 7

Blood supply to thyroid

Answer 7

1) Superior Thyroid artery (from external carotid) 2) Inferior thyroid artery (from Thyrocervical trunk of subclavian)

Question 8

Branches of the External Carotid Artery

Answer 8

*Main blood supply of the neckSome Anatomists Like Freaking Out Poor Medical Students Superior Thyroid Ascending pharyngeal Lingual Facial Occipital Posterior auricular Maxillary Superficial temporal (last two are terminal branches)

Question 9

Branches of the Subclavian Artery

Answer 9

Vertebral Internal Thoracic Thyrocervical Trunk Costocervical trunk (VIT C)

Question 10

Branches of the Vagus

Answer 10

1) Auricular 2) Pharyngeal 3) Superior laryngeal 4) Internal laryngeal 5) External laryngeal 6) Nerve to carotid body 7) Recurrent laryngeal PLAN^4

Question 11

Carotid Sheath

Answer 11

Covers the internal jugular, vagus, and carotids

Question 12

Carotid Sheaths

Answer 12

cover the carotid arteries, internal jugular veins, and vagus nerve

Question 13

Cervical Fascia

Answer 13

1) Investing 2) Prevertebral 3) Pretracheal 4 + 5) Two carotid sheaths

Question 14

Contents of the Occipital Triangle

Answer 14

*Accessory Nerve *Nerves to Levator scapula, dorsal scapular, and LTN may be here *Occipital and transverse cervical arteries

Question 15

Deep Cervical Nodes

Answer 15

Located within and around carotid sheath *Receive from head and neck via submental, submandibular, retropharyngeal, occipital, retroauricular, superficial and deep parotid, and superficial cervical lymph nodes *Drain into jugular lymph trunks

Question 16

From what does the right common carotid come off? The Left?

Answer 16

Right comes off the brachiocephalic trunk, left comes off the aortic arch directly (same with the subclavian)

Question 17

General Investing fascia

Answer 17

Most superficial layer, surrounds entire neck deep to skin and subcutaneous tissue *Goes around both sides of the SCN & trap

Question 18

How far do the lobes of the thyroid gland extend?

Answer 18

2nd to 4th tracheal rings

Question 19

In surgery of the thyroid, which nerves must you be careful of?

Answer 19

Recurrent laryngeal Superior laryngeal –>provide innervation to larynx, can cause hoarseness

Question 20

Innervation of infrahyoid muscles

Answer 20

All ansa cervicalis except thyrohyoid (C1)

Question 21

Innervation of scalene muscles

Answer 21

Cervical nerves

Question 22

Innervation of suprahyoid muscles

Answer 22

Mylohyoid : nerve to mylohyoid form inferior alveolar from V3 Anterior belly of digastric: nerve to mylohyoid from IA from V3 Posterior belly of digastric: VII Stylohyoid: VII Geniohyoid: C1 via hypoglossal nerve

Question 23

Innervation to cricothyroid muscle

Answer 23

external laryngeal nerve

Question 24

Interscalene Triangle

Answer 24

Formed by scalenus anterior and medius and the first rib *Transversed by the subclavian artery and brachial plexus

Question 25

Label the dermatomes

Answer 25

1= V1 2= V2 3= V3 4= C2 5= C3 6= C4 7= C5 8= T2 9= T3

Question 26

Muscles in the Muscular Triangle

Answer 26

Sternohyoid Sternothyroid Thyrohyoid

Question 27

Position of the external jugular vein in the neck

Answer 27

Superficial to the SCM

Question 28

Position of the Internal Jugular Vein in th neck

Answer 28

Deep to the SCM and lateral to the carotids

Question 29

Pretracheal Fascia

Answer 29

htin and limited to anterior part of neck just posterior ot the SCM

Question 30

Prevertebral Fascia

Answer 30

forms tubular sheath that encloses the vertebral columna nd themuscles that are plastered to it \*Fuses with the anterior longitudinal ligament

Question 31

Scalenus anticus syndrome

Answer 31

narrowing of the interscalene triangle that compresses the subclavian artery and brachial plexus producing vascular and neurlogical impairment in the upper limb

Question 32

Superficial Cervical nodes

Answer 32

lie along the External Jugular Vein \*Receive from occipital, retroauricular, superficial and deep parotids \*Drain to deep cervical nodes

Question 33

Superior thyroid artery supplies what

Answer 33

thyroid larynx anterior neck muscles

Question 34

Venous drainage from thyroid

Answer 34

1) Superior thyroid vein--\> into Internal Jugular 2) Middle thyroid vein--\> into Internal Jugular 3) Inferior thyroid vein --\> left brachiocephalic vein

Question 35

What are the contents of the Carotid Triangle

Answer 35

\*External Carotid \*Proximal portions of the superior thyroid, ascending pharyngeal, lingual, occipital, and facial arteries \*Portion of hypoglossal nerve that gives off the superior root of an ansa cervicalis

Question 36

What does the maxillary artery supply

Answer 36

Deep aspect of facial muscles Nasal cavity Paranasal sinuses Meninges of medial cranial fossa

Question 37

What is the clinical significance of the Greater Cornu (horn) of the hyoid bone?

Answer 37

At its tip the hypoglossal nerve and lingual artery pass

Question 38

What structures would be found on an axial CT at the level of the hyoid bone?

Answer 38

\*Mandible \*Mylohoid \*Submandibular gland \*External carotid \*C4 \*SCM

Question 39

What structures would be found on an axial CT at the level of the thyroid bone?

Answer 39

\*Strap muscles \*Might begin to see Trachea \*C4 & C5 vertebrae

Question 40

Where does the common carotid bifurcate? Into what?

Answer 40

C6 --\> Internal (laterally) and external (lies medially)

Question 41

Where does the esophagus begin?

Answer 41

Continuous with the pharynx, starts at the cricoid cartilage

Question 42

Where does the vagus run in the neck?

Answer 42

Between the internal jugular and the carotids

Question 43

Where is a tracheostomy usually performed?

Answer 43

Inferior to the thyroid isthmus

Question 44

Zones of the Neck

Answer 44