Skeletal Muscle!

Question 1

What does NOT shorten in contraction?

Answer 1

A band == the length of the thick filament

Question 2

Z line
I band
H zone
A band 
Sarcomere 
Cross bridge 

Define…

Answer 2

Z line = where thin filaments attach

I band = thin filament only
H zone = thick filament only
A band = length of the thick filament
Sarcomere = distance between 2 z lines
Cross bridge == connects thick to thin

Question 3

Name for cell membrane of a skeletal muscle cell..

Answer 3

Sarcolema