Blood supply to head

Question 1

What is endocarditis?

Answer 1

Infection of the cardiac valves

Question 2

what is bacteraemia?

Answer 2

Bacteria in bloodstream

Question 3

What are the 3 branches of the aorta?

Answer 3

• brachiocephalic trunk
• left common carotid artery
• left subclavian artery

Question 4

What does the brachiocephalic trunk split into?

Answer 4

Right common carotid artery and right subclavian artery

Question 5

What nerve runs over the brachiocephalic trunk?

Answer 5

phrenic nerve

Question 6

What does the thyrocervical trunk split into?

Answer 6

thyroid gland and neck

Question 7

What does the common carotid split into?

Answer 7

internal and external carotid artery

Question 8

What route does the internal carotid take?

Answer 8

Stays within the carotid sheath and goes into the cranium

Question 9

What route does the external carotid take?

Answer 9

Leaves carotid sheath and stays external to cranium

Question 10

What does the superior and inferior thyroid artery supply?

Answer 10

supplies superior and inferior thyroid gland

Question 11

What is the swollen part of the internal carotid called?

Answer 11

carotid sinus

Question 12

What route does the vertebral arteries take?

Answer 12

Passes through transverse foramen in vertebrates into the cranium via foreman magnum

Question 13

What does the internal carotid and vertebral arteries form?

Answer 13

Circle of willis

Question 14

What are the 8 branches of the external carotid artery?

Answer 14

Superior thyroid 
Ascending pharyngeal
Lingual
Facial
Occipital
Posterior auricular
Maxillary
Superficial temporal

Question 15

What artery supplies the teeth and what is this a branch of?

Answer 15

inferior alveolar artery and it is one of the 1st branches o the maxillary artery

Question 16

What are the two divisions of the retromandibular vein?

Answer 16

anterior and posterior

Question 17

What does the posterior division of the retromandibular vein and the posterior auricular vein join to make?

Answer 17

External jugular vein

Question 18

What does the anterior division of the retromandibular vein and the facial vein join to make?

Answer 18

Common facial vein

Question 19

What drains the cranial cavity?

Answer 19

Dural venous sinuses

Question 20

How is endocarditis caused?

Answer 20

• dental origin bacteria
• travels through bloodstream
• reaches (susceptible) heart valve
• causes bacterial endocarditis
• can damage heart valve
• leads to heart murmur
• can lead to heart failure