Innervation/vascularization Head

Question 1

Aortic arch i pigs+dogs

Answer 1

Left subclavian dorsally direct from aortic arch
Brachiocephalic trunk gives rise to right subclavian
Pigs have bicarotid trunk diving into L+R common carotid A
Dogs have no bicarotid trunk, common carotid direct from brachiocephalic trunk

Question 2

Aortic arch in undulated animals

Answer 2

Brachiocephalic trunk= L+R subclavian A, bicarotid trunk

Bicarotid trunk= common carotid arteries

Question 3

Common carotid A

Answer 3

Vascularizes head

Question 4

Internal carotid A

Answer 4

1st dorsal branch

To brain

Question 5

External carotid A

Answer 5

The continuation after internals branching off

Question 6

Occipital artery

Answer 6

1st dorsal branch from external carotid A

To caudal surface of skull

Question 7

Maxillary arter

Answer 7

2nd dorsal branch from external carotid A

Question 8

Main veins of head

Answer 8

External jugular vein
Maxillary vein
Linguofacial vein

Question 9

Parotid lymph nodes

Answer 9

Base of ear

Rostral to parotid gland

Question 10

Mandibular lymph node

Answer 10

Next to mandibular gland

Question 11

Nerves

Answer 11

Olfactory #1
Trigeminal #5
Facial #7
Glossopharyngeal #9
Vagus #10
Hypoglossal #12

Question 12

Trigeminal Nerve

Answer 12

5

Mandibular-sensitive+motor
Ophthalmic- sensitive
Maxillary-sensitive

Question 13

Facial nerve

Answer 13

#7
Motor+sensory
Parasympathetic for glands
Facial expressions
Facial paralysis

Question 14

Glossopharyngeal Nerve

Answer 14

Motor+sensory

Parasympathetic

Question 15

Vagus nerve

Answer 15

10

Motor+sensory
Parasympathetic

Question 16

Hypoglossal Nerve

Answer 16

12

Motor
Mainly tongue