Flashcards in SDL: Muscles of the Back Deck (7):
Innervation of the Extrinsic (superficial) muscles of the back?
Ventral rami of spinal nerves
What are the extrinsic muscles of the back?
- Rhomboid major and minor
- Levator Scapuale
- Latissimus Dorsi
- Serratus posterior superior
- Serratus Posterior inferior
Function of the extrinsic muscles of the back?
Weak accessory muscles for respiration
some scapular movements
Innervation of the Intrinsic (deep) muscles of the back?
Posterior rami of spinal nerves
What muscles are in the superficial Intrinsic group?
Superficial group: (Splenius Muscles)
- Splenius Capitus
- Splenius Cervicis
responsible for head movements
What muscles are in the intermediate Intrinsic group?
Intermediate group: (Erector Spinae Muscles)
principal extensor of the vertebral column