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What type of muscle found in the gut?
Smooth Muscle - Muscularis Mucosa
What are the two neurotransmitters that affect smooth muscle cells?
The main neurotransmitters involved with smooth muscle is Acetylcholine which causes an exited effect in smooth tissue and Adrenalin which causes an inhibitory effect. Adrenalin is produced by the adrenal gland when animals are in high stress or phsically elated situations. This causes the "flight or fight" mode in animals and increases function of regions of body necessary for survial such as skeletal muscle. Thus smooth muscle in the gut for example isn't vital in dangers situations therefore contraction of this muscle is decreased by the neurotransmitter.
Which types of tissue contribute to gut motility?
Smooth muscle tissue, nervous tissue, and connective tissue all play a role in gut motility. Smooth muscle tissue contracts and propels food through the digestive tract, nervous tissue coordinates and regulates muscle contractions, and connective tissue provides support and structure to the gastrointestinal system.
Smooth muscles are sometimes called?
Involuntary Muscle Immerse yourself medical language, page 431: "Smooth muscles are involuntary, nonstriated muscles."
What is an example of visceral smooth muscle?
It's found mainly in the wall of hollow viscera e.g. gut, ureters and many blood vessels
Do smooth muscles react quickly?
Generally not. The striated (skeletal muscles) usually act quickly. Smooth muscle is found in blood vessels and the gut and contract more slowly and tonically.
What is the mechanism action of tiemonium methyl sulphate?
Tiemonium methyl sulphate is an antispasmodic medication that acts by blocking muscarinic receptors in the smooth muscle of the gastrointestinal tract, thereby reducing smooth muscle contractions and spasms. This leads to relaxation of the gut muscles and relief of symptoms such as abdominal cramps and pain.
Could food move through the digestive tract if you were standing on your head?
Yes, peristalsis (rhythmic longitudinal and circular contractions of the gut smooth muscle wall) is not due to gravity
What is histology of gut?
Histology of the gut involves studying the microscopic structure of the different layers of the gastrointestinal tract, including the mucosa, submucosa, muscularis externa, and serosa. This allows for the identification of specialized cells, tissues, and structures that make up the gut, such as epithelial cells, goblet cells, smooth muscle fibers, and nerve fibers. Histological analysis of the gut can provide insights into the function and health of the digestive system.
What is the name of the wave like constraction that propel food along the gut?
Peristalsis is the process by which smooth muscle moves a mass of food (called the food bolus) through the digestive system. There is circular smooth muscle and longitudinal smooth muscle in the digestive tract. Contraction of circluar smooth muscle keeps the food bolus from moving "backward" along the digestive tract by decreasing the diameter of the tract behind the bolus. Contraction of the longitudinal muscle in the digestive tract propels the food bolus "forward" in the digestive tract.
Does epinephrine increase or decrease peristalsis?
Epinephrine typically decreases peristalsis by causing smooth muscle relaxation in the gastrointestinal tract. This can lead to decreased gut motility and slower movement of food through the digestive system.
Which kind of muscle movement happens without you having to think about it?
Voluntary muscle movements are the result of conscious effort by the brain. Involuntary muscles such as the heart or smooth muscles in the gut and vascular system contract as a result of non-conscious brain activity or stimuli proceeding in the body to the muscle itself.Your answer: The heart and smooth muscles in the gut and vascular system (lungs) are muscles that work "without thinking about it" -- we call these "involuntary" muscles.
