Question

read the article and use the information to answer the following questions. muscle contraction what is the sarcoplasmic reticulum? how does it aid in the stimulation of muscle contraction?

Explanation:

The sarcoplasmic reticulum is a specialized endoplasmic - reticulum in muscle cells. It stores and releases calcium ions. When a muscle is stimulated, an electrical signal causes the sarcoplasmic reticulum to release calcium ions into the cytoplasm. These calcium ions bind to troponin, causing a conformational change that exposes binding sites on actin for myosin, initiating muscle contraction.

Answer:

The sarcoplasmic reticulum is a specialized endoplasmic reticulum in muscle cells. It aids in muscle - contraction stimulation by storing and releasing calcium ions. When stimulated, it releases calcium ions which bind to troponin, allowing myosin to bind to actin and start muscle contraction.