Myology Of The Back

Question 1

Intrinsic (deep) intermediate (erector spinae) muscles (3)

Answer 1

Lateral
Iliocostalis
Longissimus
Spinalis
Medial

Run superior to inferior

Question 2

Intrinsic (deep) deep (transversospinalis) muscles

Answer 2

Short/Deep
Rotatores (doesn’t skip vertebrae)
Multifidus (thick and bulky in lumbar, runs from transverse process to spinous process two above)
Semispinalis

Question 3

Extrinsic superficial back muscles

Answer 3

Trapezius
Rhomboids
Latissimus dorsi

Question 4

Extrinsic intermediate back muscles

Answer 4

Serratus posterior superior

Serratus posterior inferior

Question 5

Intrinsic (deep) superficial (splenius) muscles (2)

Answer 5

Splenius capitus = superior
Splenius cervicis = inferior

Run from medial to lateral at the cervical area