Question

Which statement is correct regarding thick filament structure?
All the myosin molecules are arranged with their tails pointing away from the M line.
The free myosin head has three globular protein subunits.
It consists of a core of titin, forming a strand that continues across the I band to the Z line on that side.
Each long myosin tail is bound to actin molecules within the thick filament.

I have read my notes, and it seems as if all of these statements in some way are wrong.

Answer 1

It consists of a core of titin, forming a strand that continues across the I band to the Z line on that side

Answer 2

It consists of a core of titin, forming a strand that continues across the I band to the Z line on that side.