yea dand neck

Question 1

What does lingual artery do?

Answer 1

-supplies tongue, sublingual gland, lingual gingivae and floor of mouth
-lingual vein drains the blood from same region
-artery and veins have superficial and deep branch
-can see deep lingual vein on underside of tongue (blue colour)

Question 2

facial artery

Answer 2

-Runs from external carotid, travels under inferior margin of mandible
-gives off inferior labial branch that runs deep to bottom lip
-superior labial branch that travels under top lip
-continues under the orbit and terminates as angular artery under side of nose

Question 3

maxillary artery

Answer 3

Maxillary artery: Artery that supplied muscle of mastication and teeth
-branches to 3 diff arteries: middle meningeal artery

Question 4

inferior alveolar artery

Answer 4

-supplies mandibular teeth and buccal gingiva

Question 5

Pterygoid artery

Answer 5

-comes from maxillary artery, supplies medial and lateral pterygoid muscles, allow us side to side movement of jaw

Question 6

Masseteric artery

Answer 6

-supplies masseter that elevates and slightly protrudes mandible

Question 7

Temporal arteries

Answer 7

• travels superiorly to supply temporalis muscle (fans shaped muscle)

Question 8

Buccal artery

Answer 8

-supply buccinator muscle

Question 9

Inferior orbital artery

Answer 9

passes from orbit to exterior anterior portion of the face

Question 10

Posterior superior alveolar artery

Answer 10

-supplies molar and premolar teeth of maxilla
-termination of maxilla artery is

Question 11

Anterior superior alveolar vein

Answer 11

drain incisors

Question 12

Posterior superior alveolar vein

Answer 12

drain molars

Question 13

Inferior alveolar vein

Answer 13

drains blood from mandibular teeth

Question 14

pathway of venous from Inferior alveolar vein

Answer 14

Inferior alveolar vein-drains blood from mandibular teeth. These pass up to the:
Maxillary vein which is plexus of veins sat by pterygoid venous plexus
This plexus directly communicate with the cavernous sinus, huge vein structure in skull
-pterygoid plexus has potential of spread of infection from plexus to cranial cavity and nerve found in cavernous sinus
-maxillary vein drains into retromandibular vein which combines with facial vein and drains into internal jugular vein
-anterior portion of retromandibular vein drains into external jugular vein

Question 15

injection

Answer 15

Anaesthetics via injection, pterygoid venous plexus very important
-needle may pierce plexus and introduce infection-
-maxillary artery lies in this area so also possible to accidently pierce this vessel
-may cause swelling/blood
-may inject aesthetic into bloodstream causing systemic toxicity

Question 16

lymphatic system

Answer 16

-As blood is forced under pressure through capillaries, fluid leaks out through thin vessel walls into surrounding tissue
-key means of delivering key nutrients into dissolved tissues, it creates problem. How can we remove tissue fluid and return it to bloodstream?
-lymphatic vessels are network of vessels found in most tissues except brain
-travel through body to form larger channels and deposit tissue fluid they’ve collected called lymph back into veins at base of neck
-plays central role in immune surveillance and response

Question 17

lymph nodes

Answer 17

-sacs of immune cells along it-called lymph nodes. As lymph filters through nodes, any foreign antigen are detected by immune cells within them triggering immune response
-small clusters of lymph nodes under chin Infront of ear-forms ring of nodes in superficial tissues around head, superficial nodes with external jugular vein just under skin of neck below the ear