Blood Vessels and Lymphatics

Question 1

vertebral a.

Answer 1

20% of blood supply to the brain

supplies brainstem, cerebellum, and upper spinal cord

Question 2

subcalvian steal syndrome

Answer 2

obstruction of subclavian a proximal to the vertebral a

during exercise blood is shunted from the vertebral system and to the subclavian (mm of the arm)

Question 3

vertebro-basilar insufficiency

Answer 3

clinical signs: dizziness, cranial nerve dysfunction, paralysis, loss of consciousness
results in: coma, quadriplegia, cranial n abnormalities

Question 4

ascending cervical a.

Answer 4

runs w/ phrenic n

Question 5

inferior laryngeal a.

Answer 5

runs w/ recurrent laryngeal n.

Question 6

deep cervical a. anastomoses w/

Answer 6

deep branch of the occipital a on same side

Question 7

vertebral a. anastomoses w/

Answer 7

descending branch of the occipital, ascending cervical, opposite vertebral a.

Question 8

internal carotid a.

Answer 8

80% of blood to the brain

anterior circulation of the circle of willis

Question 9

circle of willis

Answer 9

distributes most of the blood to the cerebrum
internal carotid a (80%) - anterior
vertebral a (20%) - posterior
components - ant. communicating, ant. cerebral, post. communicating, post. cerebral a.

Question 10

shunting of blood

Answer 10

may result in hyperfusion and cerebral edema

Question 11

superior laryngeal a.

Answer 11

branch of superior thyroid a.

runs w/ internal laryngeal n.

Question 12

Retromandibular v.

Answer 12

formed by the superficial temporal and maxillary v

Question 13

internal jugular v.

Answer 13

drains primarily the brain

Question 14

superior bulb of the internal jugular v.

Answer 14

located in the jugular fossa and does not have a valve

Question 15

inferior bulb of the internal jugular v.

Answer 15

b/w sternoclavicular heads of SCM and has a valve

Question 16

pericervical lymph nodes

Answer 16

collar of superficial lymph nodes around base of head
occipital, mastoid, parotid, submandibular, buccal, and submental
drains into deep cervical lymph nodes

Question 17

superficial cervical lymph nodes

Answer 17

in posterior and anterior triangles next to jugular v.

drains into deep cervical lymph nodes

Question 18

jugulo-digastric nodes

Answer 18

tonsillar

deep cervical lymph nodes

Question 19

jugulo-omohyoid nodes

Answer 19

deep cervical lymph nodes

Question 20

thoracic duct

Answer 20

only on the left side
lymph from L side of head, all of the body EXCEPT R UE and head
drains into IJV