Charts 6-9 · 6-10 · 12 min
At rest, contracted
A read of this page, with the plate.



At rest the bare zone has myosin without heads, and actin has not slid in. I-bands are wide. When the message is on, heads pull actin toward that middle, Z-lines follow, I-bands shrink, the H-zone of no-overlap shrinks, the A-band does not change length. Sliding filament. Huxley is not a brand.
What not to collapse
A-band = thick filament length, constant. Bare zone = no heads, middle of myosin. H-zone = no actin overlap, also middle, and it moves. Kapel wrote no projections in the A-band. Heads are absent in the bare zone, present where actin overlaps. The overview on 6-9 is Chart 1-1 we already renamed. Keep it on the wall. The four under the store were asked on the calcium hour.
Her voice, from the class.
Bare zone & Z-lines — rest vs contracted
Practice
Point at 6-10. Name A-band constant, I-band shorter, Z-lines in. Do not say the A-band lost its heads.
Check
When the sarcomere shortens, the A-band:
- Stays the same length — the thick filament does not shrink ✓
- Shortens with the I-band
- Loses all of its myosin heads
Sliding filament. Length of myosin is the A-band.
Myosin heads are absent in:
- The bare zone in the middle of the thick filament ✓
- The entire A-band
- The Z-line
Bare zone, not A-band. Z-line anchors actin.
Heads on this board are:
- A replacement for the physician
- Absent in the bare zone, present where actin overlaps ✓
- A swap of clothes for the organ
Heads — Absent in the bare zone, present where actin overlaps
At rest, contracted — keep this:
- Thyroxine from the medulla
- When the message is on, heads pull actin toward that middle, Z-lines follow, I-bands… ✓
- Write a dose so the feeling looks finished
When the message is on, heads pull actin toward that middle, Z-lines follow, I-bands shrink, the H-zone of…
A true line on this hour:
- Inventing a colorful story so the session feels complete
- The overview on 6-9 is Chart 1-1 we already renamed. ✓
- Opening a chakra by squeezing it
The overview on 6-9 is Chart 1-1 we already renamed.
Practice on this hour is to:
- A name that captures the whole sky
- Name A-band constant, I-band shorter, Z-lines in. ✓
- Living against the tide on purpose
Method before bottle. Trace what the lesson names.
Chart 6-9 on this hour is used as:
- Squeezing the gate until it 'opens'
- The whole cascade on one board — this hour owns that picture. The four under Ca²⁺ were… ✓
- A reason to skip permission
Translator map — Chart 6-9. Not a prescription pad.
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.
"At rest, contracted" here is best treated as:
- A tourist collection of special experiences
- At rest the bare zone has myosin without heads, and actin has not slid in. ✓
- A rigid diagnosis tool that replaces sleep
Train with the map. Do not invent a second sky.
A Kapel cue from this board:
- A cream you prescribe from the chart
- A-band = thick filament length, constant. ✓
- Collapsing two houses into one word
A-band = thick filament length, constant.