TOPIC 23

Question 1

What do first?

Answer 1

• Remove forelimb - best just to reflect
• Score a line along the ribs dorsally and ventraly
• Perforate the chest wall and cut ribs starting from 2nd rib and stop before cutting diaphragm

Question 2

N.Vagus

Answer 2

Runs into thorax, gives of another branch
- N.recurrent laryngis
It crosses aorta and devides (just caudal to ♡)
- Dorsal branch
- Ventral branch
Branches reunite as they perforate diaphragm
- Left and right dorsal ramii
- Right ventral rami

+ Distal ganglion, after exiting skull(vagus nerve)

Question 3

N.phrenicus

Answer 3

From C5, C6 and C7
Has a left and right nerve
Crosses the heart
Innervates the diaphragm

Question 4

Trunkus Sympatheicus

Answer 4

●Cranial cervical ganglion
●Midle cervical ganglion
- Inside thorax, cranially to the heart: division of ♤vagus nerve and ♤sypathetic nerve
●Ansa sublavia, between midle cervical ggl and stellate ggl.

Question 5

Arcus Aorta

Answer 5

Arcus aorta - Aorta thoracica
1♡Brachiocephalic trunk
- A.carotis communis sinistra + Dextra
- A.subclavia dextra
2♡A.sublavia sinistra -> 3♡A.Axillaris
- Tr.costocervicalis
A.intercostalis suprema
A.Scapularis dorsalis
- A.Cervicalis profunda
- A.Vertebralis
- A.cervicalis.superficialis
- A.thoracica interna
a.musculophrenica
a.epigastrica cranialis

… 3♡A.axillaris