Blood vessels and lymphatics

Question 1

What separates the subclavian into sections?

Answer 1

Anterior Scalene M.

Question 2

Subclavian steal syndrome is due to an obstruction where?

Answer 2

the subclavian A. proximal to the vertebral A.

Question 3

Branches off the first part of the subclavian

Answer 3

1: vertebral A.
2: Internal Thoracic A.
3: thyrocervical trunk

Question 4

Branches off the thyrocervical trunk

Answer 4

1: Inferior Thyroid A.
2: Suprascapular A.
3: Transverse Cervical A.

Question 5

Branches off the inferior Thyroid A.

Answer 5

Ascending cervical A. and Inferior Laryngeal A.

Question 6

What comes off the second part of the subclavian A.

Answer 6

Costocervical Trunk

Question 7

How much of the brain does the vertebral A. supply?

Answer 7

20%

Question 8

What does the vertebral A. terminate as?

Answer 8

Basilar A.

Question 9

What supplies posterior circulation of the Brain?

Answer 9

Vertebral A.

Question 10

What supplies Anterior circulation of the brain?

Answer 10

Internal carotids

Question 11

Significant shunting of blood from one region of the brain to another can cause what?

Answer 11

hyperperfusion and cerebral edema: can cause death of neurons and look like a stroke

Question 12

Clinical signs and symptoms of vertebro-basilar insufficiency

Answer 12

• dizziness
• cranial nerve dysfunction
• paralysis
• loss of consciousness

Question 13

Where does the vertebral A. start traveling in the transverse foreman?

Answer 13

C6

Question 14

If a patient comes in with no voice problems, needing a thyroidectomy and after the procedure he does have voice problems, what was injured?

Answer 14

recurrent laryngeal N.

Question 15

How is the circle of willis best described?

Answer 15

asymmetrical and incomplete

Question 16

What gland does the facial artery pass through?

Answer 16

submandibular

Question 17

What landmark do the facial, lingual, and occipital Arteries come off the external carotid?

Answer 17

tip of the greater cornu of the hyoid bone

Question 18

What artery is used in neurosurgical prodedures to bypass obstructions of the middle cerebral artery?

Answer 18

Superficial temporal Artery

Question 19

What artery supplies the posterior nasal cavity through its two major branches?

Answer 19

Sphenopalatine A.

Question 20

What 3 things does the maxillary Artery supply?

Answer 20

infratemporal fossa, posterior 2/3 of nasal cavity, and hard palate (roof of mouth)

Question 21

Which bulb of the IJV hs a valve?

Answer 21

inferior

Question 22

What is the clinical relevance of the valve of the IJV?

Answer 22

they can see it on ultrasound to know that it’s the IJV