B20 - Lymphonodi thoracis et membri thoracis

Question 1

Give the lymphatic centers of the thorax and forelimb

Answer 1

Thoracic limb:

1. Lc. axillare

Thorax:

1. Lc. thoracicum dorsale
2. Lc. thoracicum ventrale
3. Lc. mediastinalis
4. Lc. traceabronchale
5. Lc. pulmonale

Question 2

Thoracic limb

Lc. axillare

Answer 2

1. Ln. axillare proprius
   
   • By the 1^st rib
2. Ln. axillare accessorius (ca, eq)
   
   • V. thoracica lateralis
3. Ln. axillare primae costae (ø ca)
   
   • V. brachialis → 1^st rib and sternum
4. Ln. cubiti (eq, ov)
   
   • Medial of art. cubiti

• Drains:
  
  • Deep structures of the limb
  • Superficial structures of distal limb

Question 3

Thorax

Lc. thoracicum dorsale

Answer 3

1. Ln. thoracica aortici (ø ca)
   
   • Along arota
2. Ln. intercostalis
   
   • ​Upper part of some intercostal space
3. Ln. hemalis (ru)
   
   1. Do not contain lymph, but blood

• Drains:
  
  • Roof of thorax → thoracic duct

Question 4

Thorax

Lc. thoracicum ventrale

Answer 4

1. Ln. sternalis cranialis
   
   • ​V. thoracica interna
2. Ln. sternalis caudalis (ø ca, sometimes ø fe????)
   
   • V. thoracica interna
3. Ln. phrenici (larger animals)
   
   • ​V. phrenica abdominalis

• Drains:
  
  • Ventral part of thoracic wall → thoracic duct or mediastinal lymph nodes

Question 5

Thorax

Lc. mediastinalis

Answer 5

1. Ln. mediastinale craniale (sus, ca)
   
   • Cranial part of heart
2. Ln. mediastinale mediale(ø ca??)
   
   • ​Close to heart
3. Ln. mediastinale caudale (ø ca)
   
   • Caudal part of ​heart

Question 6

Thorax

Lc. tracheabronchale

Answer 6

1. Ln. tracheobronchalis sinistra
   
   • ​Bifucation
   • Special importance in horse: paralysis of n. recurrens laryngis sinistra
2. Ln. tracheobronchalis dextra
   
   • ​​Bifucation
3. Ln. tracheobronchalis media
   
   • ​​Bifucation
4. Ln. tracheobronchalis cranialis (ru, sus)
   
   • Bronchis trachealis

Question 7

Thorax

Lc. pulmonale

Answer 7

1. Ln. pulmonalis (eq, ru)
   
   • Within lung tissue
   • Drains parenchyma