Innervation and lymphatics

Question 1

Main lymphatics

Answer 1

The tracheobronchial and mediastinal lymph nodes

Question 2

Motor innervation

Answer 2

Autonomic motor fibres
from:
-Vagus nerve (parasympathetic)
-T1-T4 (sympathetic)
Via: 
the cardiac plexus- at bifurcation of the trachea

Question 3

What do the motor fibres innervate?

Answer 3

The AV node
The SA node
Purkinje cells

Question 4

Sensory and pain fibres?

Answer 4

Travel back from the heart at spinal levels T1-T4 in sympathetic nerves

Question 5

What innervates the parietal and fibrous layers of the heart?

Answer 5

The phrenic nerve