The ..... is the smooth ER of a muscle fiber and stores calcium ions.

SYNAPTIC PHYSIOLOGY

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The ____ is the smooth ER of a muscle fiber and stores calcium ions.

A	sarcolemma
B	sarcoplasmic reticulum
C	sarcomere
D	sarcoplasm
E	T tubules

Explanation:

Detailed explanation-1: -The sarcoplasmic reticulum (SR) is a membrane-bound structure found within muscle cells that is similar to the smooth endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca2+).

Detailed explanation-2: -The sarcoplasmic reticulum (SR) is a specialized form of the endoplasmic reticulum of muscle cells, dedicated to calcium ion (Ca2+) handling, necessary for muscle contraction and relaxation.

Detailed explanation-3: -The sarcoplasmic reticulum (SR) is a form of smooth muscle endoplasmic reticulum (ER) found in skeletal muscle that functions as a regulator of Ca2+ storage and release homeostasis during and after muscle contraction [51].

Detailed explanation-4: -Skeletal muscle has a specialized form of ER known as sarcoplasmic reticulum (SR).

Detailed explanation-5: -Calcium ions at rest are stored in the sarcoplasmic reticulum (SR) from which they are rapidly released upon the depolarisation of the sarcolemmal and transverse (T-) tubular membranes of the muscle cell.

There is 1 question to complete.