Exam 3- Spinal Nerves Flashcards
The posterior primary ramus medial branches supplies
Semispinalis (upper six)
Longissimus (Lower six)
Multifidi
What provides the sensory supply to the skin of the paraspinally
The posterior primary rami medial branches
The lateral branches of the posterior spinal nerves increase in size from
Superior to inferior
The lateral branches of the posterior primary rami supplies
Longissimus
Iliocostalis
Levator costarum
What provides sensory info from the skin near the costal angles
Lateral branches of the posterior primary rami
Anterior primary rami normally follow the course of what structure
The rib above the nerve
What anterior primary rami will contribute to the brachial plexus
T1, then a smaller branch forms the first intercostal nerve
What two anterior primary rami contribute to the INTERCOSTOBRACHIAL nerve
T1,T2
Each intercostal nerve gives off a
Lateral cutaneous branch
Intercostal nerves terminate as the
Anterior cutaneous branches which supply the skin close to midline
The intercostal nerves supply the
Abdominal muscles
What is the largest thoracic nerve
Subcostal nerve (T12)
True or False
The subcostal nerve contributes to the lumbar plexus
TRUE, may supply skin as inferior as the superior buttocks aka cluneal nerves
Each thoracic communicates with the sympathetic trunk via
White and gray rami communicans
The gray ramus is ______ to the white ramus
Medial
