are sphincters skeletal muscle
TRENDING NOW. 1  nonnuclear 'Not nuclear'. 2  armada 'A fleet of warships'. 3  volunteer 'Someone who does something without being forced to do it'. 4  operationalize Bannon was removed from the National Security Council.  filibuster 'An effort to prevent action in a legislature'. A body tissue composed of elongated cells (called muscle fibers) that contract to produce movement. In vertebrate animals, voluntary movement is produced by the action of muscles on bone. Movement of the muscles of the heart and other organs is involuntary and controlled by the autonomic nervous system. Skeletal muscles move the body. Skeletal muscle contractions pull on tendons, which are attached to bones. If contraction of the muscle causes the muscle to shorten, the bone and, thus, the body part will move. For example, the biceps brachii is attached to the shoulder and the forearm bones. : either of two sphincters controlling the closing of the anus:a: an outer sphincter of striated muscle extending from the coccyx to the central tendinous part of the perineum and surrounding the anus immediately beneath the skin—called also external anal sphincter, sphincter ani externusb: an inner sphincter formed by thickening of the circular ... Sphincters, composed of skeletal muscles, regulate movement through our digestive and urinary systems, thus, controlling swallowing, defecation and even urination. Skeletal muscle contraction generates heat, which helps to maintain body temperature. The muscularis (muscularis externa) is a layer of muscle. In the mouth and pharynx, it consists of skeletal muscle that aids in swallowing. In the rest of the digestive tract, it consists of smooth muscle (three layers in the stomach, two layers in the small and large intestines) and associated nerve fibers. Urethral sphincters. The urethral sphincters are two muscles used to control the exit of urine in the urinary bladder through the urethra. The two muscles are either the male or female external urethral sphincter and the internal urethral sphincter. When either of these muscles contracts, the urethra is sealed shut. In some regions, the circular layer of smooth muscle enlarges to form sphincters, circular muscles that control the opening and closing of the lumen (such as between the stomach and small intestine). The serosa is a serous membrane that covers the muscularis externa of the digestive tract in the peritoneal cavity. musculus. 1  contractile organ, contractor - a bodily organ that contracts. 2  skeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes. 3  pronator - a muscle that produces or assists in pronation. See Also: STRENGTH. 1  The great muscles of his torso flickered and ran like the flank of a horse —Du Bose Heyward. 2  Heavily defined pectoral muscles, on which the nipples stood out like pennies —Francis King. 3  Muscled like a water buffalo —Gerald Kersh.  Muscles [of leg] as big as a hill —Dylan Thomas.
Yes, it composed of skeletal muscles.