Low back · 12 min
The low-back cylinder
A read of this page, with the plate.




Class 2 turns the person around. Psoas and iliacus on the front of the lumbar spine and the iliac bowl, inserting on the femur. Rectus and the external obliques as the belly wall. Quadratus lumborum as the square in the back, crest to twelfth rib. Together they are a cylinder. A lab that only palates the back will miss the psoas and then name the erectors for a front job.
The maps on this wall
Kidney on iliopsoas. Small intestine on rectus and the external obliques. Large intestine on quadratus. Those are Kapel’s doors, sitting next to ordinary origins. Grief on metal, fear on water, sorting on small intestine — already in Course 01’s emotional tables. We reuse the language. Origin, insertion, action named. Meridian as address.
Practice
Switch the map to the front. Name psoas, rectus, oblique. Switch to the back. Name QL. One cylinder. Name the three doors.
Check
Iliopsoas is pictured from the:
- Front — lumbar spine and iliac fossa to the lesser trochanter ✓
- Back — crest to twelfth rib, with quadratus
- Medial border of the scapula
It is a deep anterior hip flexor. The back will name the wrong fiber if you never turn. QL is the square behind.
You use the cylinder by:
- Naming kidney on iliopsoas, small intestine on the belly wall, large intestine on QL ✓
- Parking the whole cylinder on bladder with the erectors, because they all hold the trunk
- Parking QL on kidney with psoas, because both say loin
Three doors, one cylinder. Bladder is the column above. Kidney is the hip flexor, not the square.
Those on this board are:
- A bottle that finishes the feeling
- Kapel's doors, sitting next to ordinary origins ✓
- A reason to prescribe from the chart
Those — Kapel's doors, sitting next to ordinary origins
This hour teaches that:
- Inventing a colorful story so the session feels complete
- A lab that only palates the back will miss the psoas and then name the erectors for a… ✓
- Collapse the map into one medical stamp
A lab that only palates the back will miss the psoas and then name the erectors for a front job.
Practice on this hour is to:
- Thyroxine from the medulla
- Switch the map to the front. ✓
- A dose you write from a yield
Method before bottle. Trace what the lesson names.
The lab on this hour is for:
- A graded exam that invents the next curriculum
- Feeling and naming what the lesson maps — journal, not a bottle ✓
- A prescription pad for the lab name
Lab is literacy. Not a dose from the yield.
"The low-back cylinder" here is best treated as:
- A tourist collection of special experiences
- Class 2 turns the person around. ✓
- A rigid diagnosis tool that replaces sleep
Train with the map. Do not invent a second sky.
The skilled response here is:
- Squeezing the gate until it 'opens'
- Psoas and iliacus on the front of the lumbar spine and the iliac bowl, inserting on the… ✓
- A board you invent without her permission
Psoas and iliacus on the front of the lumbar spine and the iliac bowl, inserting on the femur.
You use this lesson by:
- A swap of clothes for the organ
- Rectus and the external obliques as the belly wall. ✓
- Collapsing two houses into one word
Rectus and the external obliques as the belly wall.
A Kapel cue from this board:
- A name that captures the whole sky
- Quadratus lumborum as the square in the back, crest to twelfth rib. ✓
- A reason to skip permission
Quadratus lumborum as the square in the back, crest to twelfth rib.