Thoracic plexus Flashcards
What muscles are supplied by the medial branch of each posterior primary rami of the thoracic vertebra
semispinalis
Longissimus
Multifidi
What gives sensory supply to the skin paraspinally
Sensory portion of the medial branch of the posterior thoracic rami
What muscles are supplied by the lateral branch of each posterior primary rami of the thoracic vertebra
Longissiums
iliocostalis
levator costarum
What gives sensory supply to the skin near the costal angles
Sensory portion of the lateral branch of the posterior thoracic rami
What do the anterior primary rami follow
The course of the rib it is associated with
What nerves contribute to the intercostaobrachial nerve
T2 (somtimes T1)
each intercostal nerve divides into a lateral cutaneous branch which divides into what
Anterior and poterie brahc of the lateral cutaneous branch
What does the lateral cutaneous branch of each intercostal nerve supply
Skin overlying the rib its on
What is the terminal branch of each cutaneous nerve
Anterior cutaneous branch
What does the anterior cutaneous branch supply
Skin close to midline
Are postganglionic sympathetics mylinated
No
Which thoracic nerve is the largest
Subcostal nerve
Which thoracic nerve may supply skin as far inferior as the buttocks
The subcostal nerve
What type of communicans does each thoracic nerve receive
Grey and white communicans
What muscles are supplied by thoracic nerves 7-11
Transverse abdominus
Internal oblique
External oblique
Rectus abdominus
