SDL: Muscles of the Back Flashcards Preview

C&M Term 2 > SDL: Muscles of the Back > Flashcards

Flashcards in SDL: Muscles of the Back Deck (7):
1

Innervation of the Extrinsic (superficial) muscles of the back?

Ventral rami of spinal nerves
Accessory nerve

2

What are the extrinsic muscles of the back?

Superficial group:
- Rhomboid major and minor
- Levator Scapuale
- Trapezius
- Latissimus Dorsi

Intermediate group:
- Serratus posterior superior
- Serratus Posterior inferior

3

Function of the extrinsic muscles of the back?

Weak accessory muscles for respiration
some scapular movements

4

Innervation of the Intrinsic (deep) muscles of the back?

Posterior rami of spinal nerves

5

What muscles are in the superficial Intrinsic group?

Superficial group: (Splenius Muscles)
- Splenius Capitus
- Splenius Cervicis
responsible for head movements

6

What muscles are in the intermediate Intrinsic group?

Intermediate group: (Erector Spinae Muscles)
- Spinalis
- Longissimus
- Iliocostalis
principal extensor of the vertebral column

7

What Muscles are in the Deep Intrinsic group?

Deep group:
- semispinalis
- multifidis
- rotares
rotation and extension of the vertebral column