Vessels of Head and Neck

Question 1

1st three branches of subclavian a.

Answer 1

1. Vertebral a.
2. Thyrocervical trunk
3. Dorsal scapular a.

Question 2

Thyrocervical trunk

Answer 2

1. Suprascapular a.: heading laterally.
2. transverse cervical a.: heading superolaterally
3. Inferior thyroid a.: heading superomedially

Question 3

2 branches of subclavian v.

Answer 3

Internal jugular, brachiocephalic

Question 4

External jugular v. 1st 2 branches

Answer 4

posterior auricular v.: heading superoposteriorly, behind auricle

Posterior div. of retromandubular v.: heading superiorly in front of auricle

Question 5

Superficial cervical lymph nodes

Answer 5

sit along the external jugular

Question 6

Carotid sheath: Contents, Anterior, Posterior relationships

Answer 6

carotid arteries, vagus, internal jugular.

Sitting anteriorly: Ansa cervicalis

Posteriorly: sympathetic trunk

Question 7

External Carotid Artery Branches

Answer 7

1. superior thyroid: heading inferomedially to thyroid
2. Ascending pharyngeal: small, upper pharynx, heading superiorly
3. lingual: heading medially under digastric to tongue
4. Facial: heading medially to the face
5. Occipital: heading posteriorly to skin on posterior head
6. Facial: heading anteromedially over mandible towards oral oriface
7. Maxillary: heading into infratemporal fossa
8. Superficial temporal: heading superiorly

Question 8

Internal Jugular

Answer 8

w/in carotid sheath, lateral to common carotid

Question 9

Superior and Inferior Cervical Noodes

Answer 9

Sit along internal jugular

Question 10

Superior sagital sinus

Answer 10

Dural venous sinus sitting in groover for superior sagittal sinus.

On sagital plane, superior cranium

Question 11

Inferior sagittal sinus

Answer 11

Bottom part of falx cerebri.

Question 12

Straight sinus

Answer 12

superior and inferior saggital sinuses join straight sinus at occipital region.

Question 13

Transverse sinus

Answer 13

along tentorum cerebelli, meets at confluence of sinus

Question 14

Confluence of sinuses

Answer 14

meeting point of superior sagittal, inferior sagittal, straight and transverse sinuses at back of skull near occipital bone.

Question 15

Sigmoid sinus

Answer 15

forms internal jugular vein. via jugular foramen.

Superior direction to meet with transverse sinus

Question 16

Cavernous sinus

Answer 16

lateral to sella turcica. Important structures pass thru.

Question 17

Opthalmic vein significance to cavernous sinus

Answer 17

infection of orbital region can travel to cavernous sinus

Question 18

Great cerebral vein

Answer 18

emerges from confluence of sinuses bilaterally

Question 19

Vertebral a.

Answer 19

thru transverse foramina c6-c1, thru foramen magnum

Question 20

Circle of Willis from ant. to post.

Answer 20

Anterior cerebral a.

Ant. communicating branch

Int. carotid a. –> middle cerebral a.

posterior communicating branch

Posterior cerebral a.

Superior cerebellar a.

Anterior inferior cerebellar a. –> basilar a.

Vertebral a. –> posterior inferior cerebellar a.

Ant. spinal

Question 21

Facial a. branches

Answer 21

superior and inferior labial

angular a. : heading towards nose superomedially

Question 22

Superficial temporal a. branch

Answer 22

Transverse fascial heading medially

Question 23

Maxillary a. branches in the face

Answer 23

1. mental a. via mental foramen

2. Infraorbital a. (via infraorbital foramen)

Question 24

Superficial veins of face

Answer 24

Facial v.

Superficial temporal v.

Retromandibular v.

Question 25

Deep veins of the face

Answer 25

Drain to pterygoid plexus

maxillary v., opthalmic v, cavernous sinus, deep facial v.

Question 26

Opthalmic artery

foramen, branch of, branches

Answer 26

Foramen: optic canal

Branch of: internal carotid

Branches:

1. central a. of the retina
2. lacrimal a. (lateral)
3. ciliary arteries (mid eye)
4. supraorbital a. (superior, medial)
5. eithmoidal arteries (medial
6. dorsal nasal a.

Question 27

Veins of orbit

Answer 27

superior opthalmic v., inferior opthalmic v.

Question 28

Middle meningeal a.

Answer 28

branch in 1st part (mandibular) of maxillary a.

Splits auriculotemporal n.

Question 29

Maxillary a. general branching

Answer 29

1st. part (Mandibular):
- Middle meningeal a. into foramen spinosum, splits auriculotemporal n.
- Inferior alveolar a. into mandibular foramen

2nd part (pterygoid part):

• deep to lateral pterygoid
• temporalis branch
• pterygoid branches
• masseter branch
• buccinator branch

3rd part (pterygopalatine):

• medial/anterior to lateral pterygoid
• branches to upper jaw
• branches to nasal cavity
• branches to palate
• branches to face

Question 30

Vessels of larynx superior to glottis

Answer 30

superior laryngeal vessels from superior thyroid

Question 31

vessels of larynx inferior to glottis

Answer 31

inferior laryngeal vessels from inferior thyroid

Question 32

Pteryogopalatine Fossa Vessels

Answer 32

via pterygopalatine fossa, deep branches of maxillary a.

1. infraorbital a.
2. descending palatine a. : parallels greater and lesser palatine nn
3. posterior nasal aa.
4. sphenopalatine a. : parallels the nasopalatine n.

Question 33

Blood supply to teeth

Answer 33

Inferior and superior alveolar aa.

Follow nerves

Question 34

Vessels of the palate

Answer 34

Descending palatine a.

1. greater palatine a. : hard palate, anastomose w/ sphenopalatine a.
2. lesser palatine a. : soft palate

Question 35

Vessels of the tongue

Answer 35

Lingual a. –> deep lingual artery

Veins mirror arteries

Site of drug absorption