Posterior Triangle Flashcards
1
Q
What are the boundaries of the posterior triangle
A
1) Sternocleidomastoid
2) trapezius muscle
3) middle third of clavicle
2
Q
What are the nerves of the posterior triangle
A
- accessory nerve
- parts of the brachial plexus
- cutaneous cervical nerves
3
Q
Role of the accessory nerve
A
- supplies Sternocleidomastoid and trapezius
Three parts
Upper - elevates scapula
Middle - retraction of scapula
Lower fibres go inferiority
4
Q
What are the lymph nodes
A
Small bean shaped
- filter lymph
- offer defence against the spread of infection
- returned to larger veins
5
Q
What are the superficial lymph nodes
A
Drain lymph in face, neck and scalp
6
Q
What are the deep lymph nodes
A
Left jugular trunk passes thoracic artery, left subclavian vein
