carotid aa

Question 1

carotid aa

Answer 1

sup. part of each common carotid A og int/ext carotid aa occurs in carotid triangle.

-division of common carotid A into int/ext occurs at level of sup. margin thyroid cartilage

Question 2

BR of ext. carotid artery

Answer 2

a) arise from ant. surf in carotid triangle
-Sup thyroid a
-Lingual a
-Facial a

b) arise from med og post in carotid triangle
-Asc. pharyngeal a
-Occipital a
-Post. auricular a

c) terminal br of ext. carotid a
-Temporal superficial a
-Maxillary a

Question 3

superior thyroid a + its branches (ant surf)

Answer 3

supply:
thyroid gland
larynx (by superior laryngeal a)
infrahyoid mm and sternocleidomastoid m

Question 4

lingual a + it’s branches (ant surf)

Answer 4

supply:
tongue
sublingual gland + submandibular gland
floor of mouth
palatine tonsil

Question 5

facial a (ant surf)

Answer 5

occurs in carotid and submandibular triangles.
it has relations to submandibular gland.
-curves around inf. border of mandible, just anterior to masseter m and enters face.
-It runs in tortuous course in front of facial vein

Question 6

facial a + br (ant surf)

Answer 6

supply:
-pharynx
-soft palate
-palatine tonsil
—> asc palatine a

submandibular gland
—> glandular rr

suprahyoid mm
—> submental a

-all structures in the face from inf. border of mandible, laterally to masseter m and to medial corner of eye
(by sup/inf labial a, lateral nasal a, angular a)

Question 6

facial a + br (ant surf)

Answer 6

supply:
-pharynx
-soft palate
-palatine tonsil
—> asc palatine a

submandibular gland
—> glandular rr

suprahyoid mm
—> submental a

-all structures in the face from inf. border of mandible, laterally to masseter m and to medial corner of eye
(by sup/inf labial a, lateral nasal a, angular a)

Question 7

Asc. pharyngeal A (med/post surf)

Answer 7

-pharynx, palate, tonsil
-dura mater in post. cranial fossa
-middle ear

Question 8

Occipital A (med/post surf)

Answer 8

-sternocleidomastoid m
-deep mm of neck
-mastoid cells
-posterior scalp
-external ear (medial surf of auricle)
-dura mater in posterior cranial fossa

Question 9

post. auricular A

Answer 9

-parotid gland
-external ear (med. surf auricle)
-scalp posterior to the ear
-middle + inner ear.

Question 10

Superficial temporal A

Answer 10

asc. behind mandible
in front of auricle (cov. by parotid gland)
and over zygomatic arch into temporal region

supply:
-parotid gland
-ext ear (lateral surf auricle)
-lateral face (by transverse facial a og zygomaticoorbital a)
-temporal m (by middle temporal a)
-lateral scalp (parietal + frontal branches)

Question 11

maxillary artery

Answer 11

largest br of ext. carotid A
-1st part: mandibular part
-2nd part: pterygoid part
-3d part: pterygoid palatine part

Question 12

maxillary a supply

Answer 12

-ext. acoustic meatus, tympanic cavity og TMJ
-dura mater in middle cranial fossa
-mastictaion mm og buccinator m
-nasal cav, maxillary/ethmoidal/sphenoidal sinuses
-hard+soft palate
-maxilla, mandible, all teeth, gingiva
-nasopharynx
-mental og infraorbital region

Question 13

maxillary A - mandibular part

Answer 13

the first part of maxillary A—>
milli neck of mandible og sphenomandibular lig.

supplies:
-ext acuostic meatus og tympanic membrane
-TMJ
-dura mater in middle cranial fossa + on lateral wall of skull og tympanic cavity (by middle meningeal A)
-mandible, lower teeth, gingiva, mylohyoid m (inferior alveolar A)
-skin on chin (mental ramus, originates from inferior alveolar A)

Question 14

maxillary a - pterygoid part

Answer 14

second part of maxillary a—>
in infratemporal fossa, related to lateral pterygoid m

supplies:
-mastication mm
-buccinator m

Question 15

maxillary a - pterygoidpalatine part

Answer 15

3d part—>
in pterygoidpalatine fossa

supplies:
-upper teeth, gingiva (by posterior og anterior superior alveolar aa as a br of infraorbital a)
-maxilla, maxillary sinus, skin infraorbital region (infraorbital a)
-nasopharynx, eustachian tube (artery of pterygoid canal)
-nasal cavity, ethmoidal sinus, sphenoid sinus (sphenopalatine a)
-lateral wall + roof oral cavity = palate (descending palatine a)

Question 15

maxillary a - pterygoidpalatine part

Answer 15

3d part—>
in pterygoidpalatine fossa

supplies:
-upper teeth, gingiva (by posterior og anterior superior alveolar aa as a br of infraorbital a)
-maxilla, maxillary sinus, skin infraorbital region (infraorbital a)
-nasopharynx, eustachian tube (artery of pterygoid canal)
-nasal cavity, ethmoidal sinus, sphenoid sinus (sphenopalatine a)
-lateral wall + roof oral cavity = palate (descending palatine a)

Question 16

Internal carotid artery

Answer 16

Opthalmic A supplies face + cranium:
-supraorbital A
-supratrochlear A
-dorsal nasal A

*conn. milli internal og external carotid aa—>
dorsal nasal A + angular A

*TA=
opthalmic a traverses optic canal
-br of opthalmic a anastomose w br of facial A

Question 17

Internal jugular vein

Answer 17

It begins by initial dilated p (superior bulb of jugular vein) in jugular foramen

-it is a deep structure
-traverses neck in carotid triangle w.in carotid sheath
-closely related to internal carotid a (resp to common carotid a)

-internal jugular vein joins w subclavian vein
—> brachiocephalic v

(intra/extracranial tributaries):
drains blood from:
-interior of skull including brain
-face, spf structures of skull
-parts of neck

Question 18

extracranial tributaries of internal jugular vein

Answer 18

drain venous blood from face, spf areas of skull, neck
-tributaries that drain structures and areas that are supplied by br of ext. carotid a.

-retromandibular v
-pharyngeal vv

*common trunk/thyrolinguofacial trunk:
-facial v
-lingual v
-superior thryoid v
-occipital v
-external jugular vein

(veins have many variations in both occurence and course)