NeckInnervation&Blood Supply-Exam I

Question 1

What nerves of the Brachial Plexus innervate the neck?

Answer 1

Ventral Rami of C5-T1

Question 2

What are the four C.N.’s that innervate the neck?

Answer 2

9,10,11,12 (IX,X,XI,XII)(Glossopharyngeal, Vagus, Spinal Acc, Hypoglossal)

Question 3

What nerves of the Cervical Plexus innervate the neck?

Answer 3

Ventral Rami of C1-C4

Question 4

Does the sympathetic chain innervate the neck?

Answer 4

YES!

Question 5

Which two triangles will I find CN IX Glossopharyngeal?

Answer 5

Submandibular and Carotid

Question 6

What two types of innervation does IX provide to the neck? What does it innervate? REALLY COOL STUFF!

Answer 6

Branchial Motor to the StyloPharyngeus muscle and Visceral Sensory to Pharynx, Carotid Sinus (Baroreceptor), Carotid Body (Chemoreceptor)

Question 7

When I say innervation to “Larynx” you say?

Answer 7

“Vagus” “Go nerves!”

Question 8

What two triangles does the Vagus pass through?

Answer 8

Submandibular and Carotid

Question 9

AND IT BRANCHES! What are the 3 Vagus branches in the neck?

Answer 9

Pharyngeal, Superior Laryngeal (more to come), Recurrent Laryngeal (more to come)

Question 10

What are the two BRANCHES off the Vagus-> Superior Laryngeal N?

Answer 10

Internal Laryngeal (general sensory to pharynx) AND External Laryngeal (branchial motor to 1 muscle)

Question 11

What type of nerve is the Recurrent Laryngeal? What does it do on the Left? Right?

Answer 11

Branchial motor Left: Loops under the arch of the Aorta (on left side!!) and ascends to larynx Right: Loops under subclavian artery then ascends to larynx

Question 12

What two neck muscles does XI Spinal Accessory innervate?

Answer 12

Banchial Motor of Trapezius and SternoClidoMastoid

Question 13

Which subdivision of the Anterior Triangle does the XII Hypoglossal go to? What two muscles does it have to pass to reach the tongue?

Answer 13

Submandibular Triangle…Mylohyoid and hyoglossus

Question 14

Where can I find the Cervical Plexus?

Answer 14

UNDER the s.c.m., AnterioMedial to L.Scapulae&MidScalene (so superior to BrachialPlex??)

Question 15

What are the 4 nerves involved in the Cervical Plexus?

Answer 15

Ventral Rami of C1-C4

Question 16

What do the superficial branches of the CervPlex innervate? What about the deep branches?

Answer 16

Superfi:Cutaneous, General Sensory….Deep:Motor

Question 17

Which nerves of the C.P. form the Ansa Cervicalis? What muscles do they innervate?

Answer 17

C1,C2,C3…They innervate SternoThyroid,SternoHyoid,OmoHyoid (ALL Infrahyoids except ThryoHyoid which is innervated by IX)

Question 18

What are the 4 nerves of the superficial C.P.? (Ascending AND Descending)

Answer 18

3 Ascending (Lesser Occipital, Greater Auricular, Transverse Cervical) 1 Descending (SupraClavicular)

Question 19

What are the 3 groups of deep motor muscles from the C.P.?

Answer 19

1. C1 muscles 2. Ansa Cerv Muscles 3. All of my “addition” muscles

Question 20

What color communicating branches does the C.P. receive? Where are most of them found?

Answer 20

Grey Comm Branches most from SUPERIOR CERVICAL GANGLION

Question 21

What are the three sympathetic chain ganglion of the neck? EXREMELY EASY

Answer 21

Inferior Cervical Ganglion (C7,C8), Middle Cervical Ganglion (C5,C6) Superior Cervical Ganglion (C1-C4)

Question 22

What are the THREE layers of the Cervical Viscera? What are in each compartment?

Answer 22

Superficial: Thyroid Gland, ParaThyroid Gland, Thymus Middle:Larynx, Trachea Deep:Pharynx, Esophagus

Question 23

What are the four landmarks of the thyroid gland?

Answer 23

Left Lobe, Right Lobe, Isthmus, and Pyramidal Lobe

Question 24

How many ParaThyroid Glands are there? Where are they located?

Answer 24

There are four and two are located on each side of the POSTERIOR portion of the Thyroid

Question 25

What is another name for the Deep Layer of the neck? Oh and its not Elementary…

Answer 25

Alimentary Layer- Holds the Pharynx and Esophagus

Question 26

What are the names for clean lymph vessels and dirty lymph vessels, respectively?

Answer 26

Clean: Afferent (To the Lymph system) Dirty: Efferent

Question 27

Where does lymph go from the RIGHT side of the head and neck?

Answer 27

RIGHT LYMPHATIC DUCT–>R Subclavian Vein

Question 28

Where does the lymph from the Left side of the Head and Neck drain?

Answer 28

LEFT THORACIC DUCT–>Left lymphatic duct–>left subclavian vein