The Sarcoplasm of a muscle fiber is comparable to the cytoplasm of other cells, but it houses unusually large amounts of glycosomes (granules of stored glycogen) and significant amounts of myoglobin, an oxygen binding protein.1
1. http://en.wikipedia.org/wiki/Sarcoplasm
The sarcoplasmic reticulum (SR). It releases Ca2+ During contraction, and stores it during relaxation.
in the sarcoplasmic reticulum of a muscle fiber/cell.
The Ca2+ ion concentration of the sarcoplasmic reticulum will be greater in a resting muscle
The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.
Calcim
Sarcoplasmic reticulum
The sarcoplasmic reticulum is a special type of smooth endoplasmic reticulum. It releases calcium ions during muscle contraction and absorbs them during relaxation.
sarcoplasmic reticulum
sarcoplasmic reticulum
sarcoplasmic reticulum
Calcium (Ca+2)
sarcoplasmic reticulum