electrical components of skeletal muscle fiber

Question 1

sacrolemma

Answer 1

plasma membrane; surrounds sarcopalsm (cytoplasm)

Question 2

Transverse tubules (t tubules)

Answer 2

inward folds of sarcolema;
project into interorior of sarcolemma
carry electrical impulses to center of sarcoplasm

Question 3

Sarcoplasmic reticulum

Answer 3

specialized smooth endoplasmic reticulum that stores calcium
release of calcium from SR is switch for muscle contraction

Question 4

terminal cisternae

Answer 4

enlarged end of SR next to t tubules

Question 5

triad

Answer 5

two terminal cisternae and their t tubule