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Why are muscles arranged in circular and longitudinal layer?
In smooth muscle these transitionally alternating muscle fibers help to serve the actions of peristalsis. As the circular fibers contract the tube (lumen) constricts and as the longitudinal fibers contract it opens up the lumen.
What happens when a muscle tightens?
It constricts it shortens
Is the mouth a sphincter?
No, the mouth is not classified as a sphincter. A sphincter is a circular muscle that constricts or closes an opening in the body, facilitating control over the passage of substances. While the mouth does have muscles that help control its opening and closing, it primarily functions as an entry point for food and air, rather than acting as a sphincter.
What happens to muscle if you tighten it?
after a long period of exercise a muscle can cramp
What is a splincter?
A sphincter is a circular muscle that constricts or closes a bodily passage or opening. It helps regulate the flow of substances within the body, such as food through the digestive tract or urine from the bladder. Sphincters can be found in various locations, including the gastrointestinal tract, urinary system, and the reproductive system, and they can be either involuntary or voluntary in function.
What is the medical term meaning circular muscle found in tubular structures that regulates the passage of substance?
The medical term for circular muscle found in tubular structures that regulates the passage of substances is "sphincter." Sphincters act as valves to control the flow of fluids or materials through tubular structures in the body.
What kind of muscle controls a circular opening?
A sphincter muscle controls a circular opening in the body. It serves to regulate the passage of substances through the opening by contracting or relaxing. Examples include the anal sphincter and the sphincter muscles in the digestive system.
What is the muscle that controls the urethra?
The muscle called the urethral sphincter muscle is what constricts in the urethra. The urethral orifice is what is actually constricted by the urethral sphincter.
What is a disorder that constricts the air passage and narrows the respiratory tract?
You're describing the symptoms of asthma.
What is the involuntary tissue that constricts the lumen of the small intestine?
Smooth muscle tissue constricts the lumen of the small intestine involuntarily. This muscle tissue is responsible for moving food and materials through the digestive tract by contracting and relaxing in a rhythmic pattern.
Muscle that contracts in order to cause a miotic effect?
circular muscle
Muscles that constrict or dilate to control blood flow are called?
There are three types of muscle-skeletal, smooth, and cardiac. The muscle type that constricts and dialtes to control blood flow is the smooth muscle(involuntary).
