The primary function of smooth muscle cells is to help hollow organs contract. These organs include the bladder and uterus as well as organs in the gastrointestinal tract. Smooth muscle cells also help the eyes maintain normal focus.
Smooth muscle cells are responsible for helping food pass through the digestive system and for pushing food up into the esophagus when vomiting occurs. In the urinary system, smooth muscle cells contract to push urine into the urethra and out of the body. When a woman gives birth, the smooth muscle cells found in the uterus contract to push the baby out of the birth canal. Smooth muscle cells also affect the diameter of the blood vessels. When the smooth muscle inside a blood vessel contracts, the diameter of the blood vessel decreases. If the smooth muscle expands, the diameter of the blood vessel increases.Learn More
The muscular system refers to the series of muscles in the entire body that allows movement of the skeleton, maintains posture and produces heat through cell metabolism, according to Healthline. The muscles comprising the muscular system not only move the bones, but they also make the heart beat.Full Answer >
Elastin is an elastic protein that can be found in the connective tissue in the body, including the lungs, ligaments, skin and elastic cartilage. The protein elastin is very flexible and gives internal organs their elasticity.Full Answer >
The human tongue does not regenerate by itself; however, adult stem cells help heal damaged tissues. Adult stem cells are being harvested, isolated and then manipulated for research. Progress has been made for new forms of treatment.Full Answer >
The endomysium is the protective covering of connective tissue that surrounds each individual muscle fiber. Blood vessels, or capillaries, nerves and lymphatics also make up this layer.Full Answer >