Blood Supply of the Head and Neck

Question 1

What are the 3 arteries that supply the head and neck

Answer 1

– Common Carotid Artery
– Vertebral Artery
– Subclavian Artery

Question 2

What connects the right common carotid artery to the aorta

Answer 2

The Brachiocephalic trunk

Question 3

Where does the left common carotid arise from

Answer 3

Directly from the aorta arch

Question 4

What does the brachiocephalic trunk divide into

Answer 4

The right subclavian and right common carotid arteries

Question 5

Where does the common carotid run into

Answer 5

The neck and to the upper border of the thyroid cartilage

Question 6

What do the left and right common carotids divide into and what do these branches supply

Answer 6

Divides into the internal and external carotids
External supplies the face and neck
Internal supplies the brain and eyes

Question 7

What does the carotid sheath consist of

Answer 7

The carotid artery (internal i think)
Internal jugular vein
Vagus nerve
Lymph nodes

Question 8

Name as many of the external carotid artery branches as you can

Answer 8

Superficial temporal
Maxillary
Facial
Lingual
Superior thyroid

Question 9

Where does the maxillary artery arise from and what does it supply

Answer 9

It arises behind the angle of the mandible and supplies the deep structures of the face.

Question 10

Name the branches of the maxillary artery related to dentistry

Answer 10

Inferior alveolar
Posterior superior alveolar
Infraorbital
Descending palatine
Artery of the pterygoid canal and pharyngeal
Sphenopalatine

Question 11

Why is the infraorbital artery relevant to dentistry

Answer 11

Infraorbital artery gives branches to anterior and middle superior alveolar arteries. Their distribution to the maxillary incisors and cuspid teeth and to the maxillary sinuses.

Question 12

Why is the Post. superior alveolar artery relevant to dentistry

Answer 12

Posterior superior alveolar artery. Its distribution is to the maxillary molar and premolar teeth and gingiva.

Question 13

Why is the Inferior alveolar artery relevant to dentistry

Answer 13

Inferior alveolar artery. It descends close to the medial surface of the mandibular ramus to the mandibular foramen. Before entering the foramen, it gives off the mylohyoid branch which supplies Tissues in the floor of the mouth.

Question 14

What are the branches of the facial artery and what do they supply

Answer 14

Sup. and Inf. Labial arteries - upper and lower lips

Angular artery - nose, angle of eye

Question 15

Describe the course of the superficial temporal artery

Answer 15

arises ant. to the EAM and deep to parotid

Question 16

What are the branches of the lingual artery

Answer 16

1- dorsal lingual
2- deep lingual
3- sublingual
4- suprahyoid branches

Question 17

What does the lingual artery supply

Answer 17

It supplies the tissues

superior to the hyoid bone including : 1- suprahyoid muscles 2- floor of the mouth 3- the tongue

Question 18

What sinus does the internal carotid artery pass through to enter the skull

Answer 18

The cavernous sinus

Question 19

What is an epidural hepatoma

Answer 19

bleeding between dura and bone

Question 20

What are the internal carotids branches to the face

Answer 20

Supratrochlear artery

Supraorbital artery

Question 21

What are the key arteries that supply blood to the brain

Answer 21

Vertebral and basilar arteries

Internal carotid arteries and the Circle of Willis

Question 22

What role do the vertebral and basilar arteries have to supply blood to the brain

Answer 22

Vertebral - oxygenated blood from subclavian arteries up through the transverse foraminae of the cervical vertebrae to the basilar artery of the brain
Basilar - oxygenated blood from the vertebral arteries to the Circle of Willis of the brain

Question 23

What role do the internal carotid arteries and circle of willis play in supplying blood to the brain

Answer 23

Internal Carotid arteries - oxygenated blood from common carotid arteries of the neck to the circle of willis
Circle of Willis - oxygenated blood form incoming arteries to deep internal arteries of the brain