Head Vessels & Lymphatics

Question 1

What is the main blood supply to the head?

Answer 1

common carotid A

Question 2

What are the 3 branches of the common carotid A?

Answer 2

1. cranial thyroid A
2. internal carotid A
3. external carotid A

Question 3

What special structure is near the internal carotid A?

Answer 3

carotid sinus/body

Question 4

Which species have a small internal carotid A that becomes less patent with age?

Answer 4

ruminants + pig

Question 5

(T/F) The linguofacial trunk may or may not be present in the ox.

Answer 5

True

Question 6

Which artery is the first branch off the linguofacial trunk A. only in the horse?

Answer 6

ascending palatine A

Question 7

(T/F) The facial A gives off the deep lingual A in the horse while the lingual A gives off the sublingual A.

Answer 7

False - opposite

Question 8

Which branches does the lingual A give off in the ruminant?

Answer 8

sublingual A
deep lingual A

Question 9

The superficial temporal A gives off what two branches? What additional branch in the ox?

Answer 9

transverse facial A
rostral auricular A
ox: cornual A

Question 10

After the superficial temporal A comes off the external carotid A, it continues as _________.

Answer 10

maxillary A

Question 11

Which artery is better seen in the ox and supplies all structures of the orbit?

Answer 11

external ophthalmic A

Question 12

What arteries penetrate and supply the eyeball/globe?

Answer 12

posterior ciliary Aa

Question 13

What are the two terminations of the maxillary A?

Answer 13

infraorbital A
descending palatine A

Question 14

In the ox, blood from the ___________ A doesn’t enter into the cerebral arterial circle, while branches of _________ A do.

Answer 14

internal carotid A
maxillary A

Question 15

Small ruminants have no _______ A. Instead, nasal, superior labial Aa come from a large _________ A.

Answer 15

facial A
transverse facial A

Question 16

What is function of the venous sinuses of the head?

Answer 16

pocket to store blood flow during mastication/muscle contraction

Question 17

Which two veins come together to form the external jugular V?

Answer 17

maxillary V
linguofacial V

Question 18

Term for the triangular area where an infected guttural pouch can be drained surgically.

Answer 18

viborg’s triangle

Question 19

Viborg’s triangle is made up of what 3 structures?

Answer 19

1. tendon of sternocephalicus M
2. ramus of mandible
3. linguofacial V.

Question 20

The parotid, mandibular, and medial retropharyngeal lymph nodes all have efferent lymph vessels which drain to _________.

Answer 20

lateral retropharyngeal lymph node

Question 21

Infection of the mandibular lymph node can result in ________ while infection of medial retropharyngeal lymph node can result in _________.

Answer 21

purulent drainage
nasal discharge

Question 22

Efferent lymph vessels from the lateral retropharyngeal lymph node drain where?

Answer 22

tracheal trunk