The Sarcomere

Where is ‘I’ band?

#1

Where is ‘A’ band?

The blue

Where is the ‘sone of overlap’?

#2 (orange)

Where is ‘H’ zone?

#3 (yellow)

The sarcomere is the unit of what?

Muscle contraction

What are the thin filaments anchored to?

A zigzagging protein- Zwischenscheibe (meaning washer) AKA the Z line

Multiple thick filaments extending from a disk shaped central region composed of cyoskeletal elements

M-line

What protein runs from Z line to M line?

Titin

What is the function of titin?

It functions like a spring

The sarcomere is from _____ to _____

Z line to Z line

What is the zone between two sacromeres?

I band (only contains thin filaments)

What area contains both thick and thin filaments?

Zone of overlap

What area only contains thick filaments?

H zone

Where is ‘A’ band located?

The center of the sarcomere

What are the two subdivisions of the ‘A’ band?

Zones of overlap and H zone