Head and neck: Arterial blood supply

Question 1

subclavian a: branches list (5)

Answer 1

• vertebral
• internal thoracic
• thyrocervical trunk
• costocervical trunk
• dorsal scapular

Question 2

subclavian a: vertebral a distribution

Answer 2

• neck mm
• vertebra
• spinal cord
• brain

Question 3

subclavian a: internal thoracic a distribution

Answer 3

• ant thoracic wall
• mediastinal structures
• diaphragm

Question 4

subclavian a: thyrocervical trunk branches

Answer 4

• inf thyroid
• suprascapular
• transverse cervical

Question 5

subclavian a: thyrocervical distribution

Answer 5

• thyroid
• neck
• scapular regions

Question 6

subclavian a: costocervical branches

Answer 6

• sup intercostal

- deep cervical

Question 7

subclavian a: costocervical distribution

Answer 7

• deep neck mm
• back mm
• vertebra
• intercostal spaces 1-2

Question 8

subclavian a: dorsal scapular

Answer 8

• levator scapulae

- rhomboids

Question 9

vertebral aa: features

Answer 9

• branch of subclavian
• through transverse foramen (C1-6)
• through foramen magnum
• L and R = basilar

Question 10

vertebral aa: branches

Answer 10

• meningeal
• ant spinal
• post spinal (common too branching from post inf cerebellar aa)
• post inf cerebellar

Question 11

common carotid aa: branches

Answer 11

• external carotid

- internal carotid

Question 12

ext carotid aa: list branches (8)

Answer 12

• maxillary
• facial
• lingual
• ascending pharyngeal
• sup thyroid
• superficial temporal
• post auricular
• occipital

Question 13

ext carotid aa: facial aa branches

Answer 13

• angular
• lateral nasal
• sup labial
• inf labial

Question 14

ext carotid aa: maxillary aa parts

Answer 14

1. mandibular
2. pterygoid
3. pterygopalatine

Question 15

ext carotid aa: maxillary - list 1st part branches

Answer 15

• middle meningeal

- inf alveolar

Question 16

ext carotid aa: maxillary - 1st part inf alveolar branches

Answer 16

• mylohyoid
• incisor
• mental

Question 17

ext carotid aa: maxillary - list 2nd part branches

Answer 17

• ant/ post temporal
• buccal
• massenteric
• pterygoid

Question 18

ext carotid aa: maxillary - list 3rd part branches

Answer 18

• sphenopalatine

- infraorbital

Question 19

eg. epidural haematoma

Answer 19

• internal bleeding
• increased pressure
• middle meningeal aa

Question 20

ext carotid aa: sup thyroid a distribution

Answer 20

• thyroid gland

- adjacent structures

Question 21

ext carotid aa: ascending pharyngeal a distribution

Answer 21

• pharynx
• soft palate
• ear
• meninges

Question 22

ext carotid aa: lingual a distribution

Answer 22

• tongue
• sublingual gland
• tonsil
• epiglottis

Question 23

ext carotid aa: facial a distribution

Answer 23

• mm of facial expression and face
• palate
• tonsils
• submandibular gland

Question 24

ext carotid aa: occipital a distribution

Answer 24

• post part of scalp (far as vertex)
• meninges
• mastoid air cells

Question 25

ext carotid aa: post auricular a distribution

Answer 25

- scalp post to auricle - auricle - middle ear - mastoid cells - parotid gland - diagastric m - stylohyoid m

Question 26

ext carotid aa: maxillary a distribution

Answer 26

widespread incl: - mm of mastication - TMJ - parts of ear - buccinator - extraocular eye mm - teeth - gingiva - nasal cavity - paranasal sinus - skin of face, bones, nerves

Question 27

ext carotid aa: superficial temporal a distribution

Answer 27

- mm and skin of face and scalp | - parotid gland and duct

Question 28

int carotid aa: list branches (4)

Answer 28

- ophthalmic - ant cerebral - middle cerebral - post communicating

Question 29

int carotid aa: ophthalmic a distribution

Answer 29

- orbital structures - eye - forehead and scalp - part of nose - paranasal sinuses

Question 30

int carotid aa: ant cerebral a distribution

Answer 30

- parts of cerebral hemispheres

Question 31

int carotid aa: middle cerebral a distribution

Answer 31

- parts of cerebral hemispheres

Question 32

int carotid aa: post communicating a distribution

Answer 32

- connects internal carotid to post cerebral a

Question 33

arterial supply to brain:

Answer 33

- internal carotid (from common carotid) | - vertebral a (via subclavian)

Question 34

arterial circle (circle of Willis): to the circle

Answer 34

- int carotid | - vertebral aa (basilar aa)

Question 35

arterial circle (circle of Willis): anatomosing

Answer 35

- ant communicating | - post communicating

Question 36

arterial circle (circle of Willis): from circle

Answer 36

- ant cerebral - middle cerebral - post cerebral

Question 37

eg. ischemic stroke:

Answer 37

- clotting of blood vessels - necrosis - blockage

Question 38

eg. hemorrhagic stroke:

Answer 38

- rupture of blood vessel

Question 39

eg. Berry aneurysm:

Answer 39

- outpouching/ bulge in aa | - can be asymptomatic until rupture