The function of the sarcoplasmic reticulum is to store and release calcium ions in the body's muscle cells, according to the Dr. Evangelia Kranias Lab at the University of Cincinnati. The sarcoplasmic reticulum is the main organ through which calcium in the muscles is handled and regulated.Know More
The role of the sarcoplasmic reticulum of smooth muscles may change as the body changes physiological states or experiences illness and disease, reports a study published by the National Center for Biotechnology Information. In addition to being a calcium storage mechanism, the sarcoplasmic reticulum was originally thought to be synthetic and a storage mechanism for contractile proteins. The National Institutes of Health study points out that researchers have expanded the explanation of the sarcoplasmic reticulum's functions to include homeostasis and contribution to signaling in other organelles such as the nucleus and mitochondria.
The sarcoplasmic reticulum is similar in structure to the endoplasmic reticulum, except for the assortment of proteins it contains, says Wikipedia. This one difference causes both organs to function quite differently in the body. The sarcoplasmic reticulum stores large amounts of calcium and then releases it when muscles become stimulated, but the endoplasmic reticulum mainly synthesizes and transports proteins to a cell system known as the Golgi apparatus.Learn more about Muscles
Muscles are composed of muscle tissues and muscle cells. The cells found in muscles are highly specialized contractile cells. Muscles may be classified as skeletal muscle, cardiac muscle or smooth muscle, depending on the type of cells found in each muscle.Full Answer >
The contractile elements of the muscle cells are called myofibrils. Myofibrils make up more than half of the volume of the cells. These elements are made up of smaller units called sarcomeres, which repeat and do the actual function of the contraction.Full Answer >
According to the New York Times, a vascular spasm is when the muscle cells within the walls of a blood vessel briefly tighten. Vascular spasms occur when the blood flow is blocked by a blood vessel that has significantly decreased in size or completely closed up.Full Answer >
The function of tendons is to connect muscle tissues to bones. The same way ligaments connect bones to other bones, tendons act as the bridge between muscles and bones. This connection enables the tendons to regulate forces between muscle tissues during movement so that the body remains stable.Full Answer >