Examples of mucus in the following topics:
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- These mucus membranes are involved in absorption and secretion.
- The term "mucous membrane" refers to where they are found in the body; not every mucous membrane secretes mucus.
- Submucosal glands consist of exocrine glands that secrete mucus.
- These glands excrete mucus to facilitate the movement of particles along the body's various tubes, such as the throat and intestines.
- The submucosal glands are a companion to unicellular goblet cells, which also produce mucus, and are found lining the same tubes.
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- It is lined with pseudostratified ciliated columnar epithelium cells with goblet cells that produce mucus.
- This mucus and cilia of the trachea form the mucociliary escalator,
which lines the cells of the trachea with mucus to trap inhaled foreign
particles.
- A cross section of the trachea, showing the hyaline cartilage, mucus glands, and ciliated epithelium.
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- Progesterone only contraceptives can also prevent ovulation, but rely significantly on secondary mechanisms such as the thickening of cervical mucus.
- A secondary mechanism of action of all progesterone containing contraceptives is inhibition of sperm penetration through the cervix into the upper genital tract (uterus and fallopian tubes) by decreasing the amount of and increasing the viscosity of the cervical mucus.
- These contraceptives inconsistently inhibit ovulation in approximately 50% of cycles and rely mainly on their progestogenic effect of thickening the cervical mucus, thereby reducing sperm viability and penetration.
- The same cervical mucus changes occur as with low dose progesterone.
- The same cervical mucus changes occur as with very low dose and intermediate dose progesterone.
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- The macroscopic nasal hairs prevent large particles from reaching the lungs, while the cilia and mucus trap pathogens and dust to take them to the pharynx, where they can be destroyed by digestion.
- Sneezing occurs from irritation of the nasal mucus, which expels foreign particles, but can also spread microbial and viral infections between humans.
- The most important function is the sinuses' role in draining mucus from the nasal cavity to the nasopharynx, which helps regulate pressure inside the nasal cavity.
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- The layers of the stomach produce mucus to protect itself, enyzmes to break down the food for digestion, and muscles to churn the food.
- Near the top of the pits, closest to the contents of the stomach, there are mucus-producing cells called goblet cells that help protect the stomach from self-digestion.
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- The mucosa contains specialized goblet cells that secrete sticky mucus throughout the GI tract.
- Food, mucus, and digestive juices pass through the lumen, and the mucosa comes in direct contact with digested food (chyme).
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- This protein is required to regulate the components of sweat, digestive juices, and mucus.
- The hallmark symptoms of cystic fibrosis are salty tasting skin, poor growth and poor weight gain despite a normal food intake, accumulation of thick, sticky mucus, frequent chest infections and coughing or shortness of breath.
- Lung disease develops in CF as a result of clogging of the airways due to mucus build-up, decreased mucociliary clearance, and resulting inflammation.
- Many of these symptoms occur when bacteria that normally inhabit the thick mucus grow out of control and cause pneumonia.
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- Most mucous membranes secrete a sticky, thick fluid called mucus, which facilitates several barrier immune system functions and provides a moist environment for internal and semi-internal structures.
- The mucosal epithelium in the nasopharynx is psuedostratified and ciliated, which helps accumulate and remove mucus.
- While the skin simply prevents pathogen entry, more specialized structures like the mucociliary escalator in the trachea trap pathogens in mucus secretions and use cilia to push them out of the trachea to prevent entry into the lungs.
- Not every pathogen is caught nor inhibited in mucus, and some may infect the mucosal epithelium directly.
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- Anti-microbial peptides: Various chemokines and proteins that are secreted by the mucus membranes of the airways.
- Coughing is a result of constriction from nervous stimulation in the trachea and larynx and also serves to dislodge mucus trapped inside the lungs.
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- While both the small intestine and the large intestine have goblet cells that secrete mucin to form mucus in water, they are abundant in the large intestine.
- The crypts and intestinal villi are covered by epithelium that contains two types of cells: goblet cells that secrete mucus and enterocytes that secrete water and electrolytes.