Blood Vessels

Question 1

Which muscle does the external jugular vein course over?

Answer 1

SCM

Question 2

What arteries arise from the subclavian artery in the base of the neck?

Answer 2

Vertebral, internal thoracic and thyrocervical

Question 3

On the right, what arises from the brachiocephalic trunk?

Answer 3

Subclavian and common carotid arteries

Question 4

What does the suprascapular artery supply?

Answer 4

Posterior aspect of shoulder

Question 5

What does the inferior thyroid artery supply?

Answer 5

Lower pole of thyroid gland

Question 6

Where do vertebral arteries arise?

Answer 6

From the subclavian arteries on the left and right

Question 7

What does the internal carotid artery enter the skull through?

Answer 7

Carotid canal in petrous part of the temporal bone

Question 8

At what level does the common carotid artery bifurcate?

Answer 8

C4 - level of superior border of the thyroid cartilage

Question 9

Where is a common site for atheroma formation in the neck?

Answer 9

At the bifurcation of the carotid artery

Question 10

What does the carotid sinus do?

Answer 10

Contains barorecptors for detecting changes in arterial BP

Question 11

What does the carotid body contain?

Answer 11

Peripheral chemoreceptors which detect arterial oxygen

Question 12

What’s the importance of a carotid sinus massage?

Answer 12

It’s possible to terminate a supraventricular tachycardia

Question 13

What is the route of the internal carotid artery?

Answer 13

Enters skull through petrous part of the temporal bone, turns medially and horizontally, enters the cranial cavity then makes S shaped bend and courses through the cavernous sinus

Question 14

What are the branches of the external carotid artery?

Answer 14

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

Question 15

Why can deep lacerations of the scalp involving epicranial aponeurosis cause profuse bleeding?

Answer 15

Because of the opposin pull of occiptofrontalis

Question 16

What artery supplies the nasal septum?

Answer 16

Sphenopalatine

Question 17

What would a rupture of the middle meningeal artery lead to?

Answer 17

Extradural haemorrhage

Question 18

How do veins of the scalp connect to dural venous sinuses?

Answer 18

Veins of scalp connect to diploic weins of skull thorugh several emissary veins and thus to dural venous sinuses

Question 19

True or False;

Emissary veins have lots of valves

Answer 19

False

They are valveless

Question 20

How can infection spread to the meninges from the scalp?

Answer 20

In loose connective tissue - through emissary veins

Question 21

Do veins of the face have valves?

Answer 21

No

Question 22

At the medial angle, the facial vein communicates with superior opthalmic and drains into what?

Answer 22

Cavernous sinus

Question 23

What do deep facial veins drain into?

Answer 23

Pterygoid venous plexus

Question 24

How is it possible to get infection in the cavernous sinus from an external facial injury?

Answer 24

Because of its connections with the facial vein via the superior ophthalmic vein, it is possible to get infections in the cavernous sinus from an external facial injury within the Danger area of the face

Question 25

Which foramen does the middle meningeal artery run through?

Answer 25

Foramen spinosum

Question 26

Which foramen does the internal carotid artery run through?

Answer 26

Carotid canal