12 résultats pour "mucus"

• mucus.

• Digestive System.

  The stomach, located in the upper abdomen just below the diaphragm, is a saclike structure with strong, muscular walls. The stomach can expand significantly to storeall the food from a meal for both mechanical and chemical processing. The stomach contracts about three times per minute, churning the food and mixing it with gastricjuice. This fluid, secreted by thousands of gastric glands in the lining of the stomach, consists of water, hydrochloric acid, an enzyme called pepsin, and mucin (the...

• Comparative Anatomy.

  In comparing two species, anatomists have to be careful to differentiate between homologous structures, which are ones that have evolved from a shared ancestor, andanalogous structures, which have developed from different origins. Homologous structures are built on the same underlying plan. A human arm, a bat’s wing, and awhale’s flipper look quite different from the outside, but the bones inside reveal that these limbs all have the same basic structure. Analogous structures, by contrast,often l...

• Uaru. L'alevin picore les flancs des parents et prélève le mucus Encore

• Respiratory System.

  rapidly, or laughs while swallowing, the swallowing reflex may not work, and food or fluid can enter the larynx. Food, fluid, or other substances in the larynx initiate acough reflex as the body attempts to clear the larynx of the obstruction. If the cough reflex does not work, a person can choke, a life-threatening situation. TheHeimlich maneuver is a technique used to clear a blocked larynx ( see First Aid). A surgical procedure called a tracheotomy is used to bypass the larynx and get air to...

• Reproductive System.

  in which the young develop, and a thinner channel, the vagina, which opens exteriorly. V GENITALS In animals that lay their eggs and discharge their sperm into water, the spermatozoa reach the eggs by chemical attraction; the eggs of individuals of a species attractonly the sperm of members of the same species. When eggs and sperm are deposited at great distances from each other, the number of eggs fertilized is small. Manyamphibians and aquatic vertebrates solve this problem by attaching thems...

• Birth Control.

  without a prescription and used alone or with a condom, diaphragm, or cervical cap. Spermicides used alone must be inserted deep into the vagina before each act ofintercourse and a woman should not douche for six to eight hours after intercourse. With typical use, spermicides used alone are effective in preventing pregnancyabout 74 percent of the time. They may cause an allergic reaction such as irritation of the vagina or penis. B Intrauterine Device The intrauterine device (IUD) is a small pl...

• LES CRAPAUDS

  Les crapauds i Les énormes glandes parotides situées A derrière les yeux de ce crapaud géant sécrètent un mucus venimeux très actif. La forme de ces glandes varie selon tes espèces et permet de tes différencier. Ce bufonidé essaie d'attirer une femelle ..,.._ en tançant son cri. Amplifié par te sac vocal, cet appel est audible à plus d'un kilomètre. Les crapauds déposent habituellement leur ponte (plusieurs milliers d'œufs) en longs cor­ dons pouv...

• SVT

  la membrane cytoplasmique. Cela montre que le cas témoins et fonctionnel et nous avons le résultat que nous souhaitons. Dans les cas deux et trois, les cellules de souris ont reçu le gène muté après le traitement anticorps. Dans le cas numéro deux, la protéine CFTR et dans le milieu extra-cellulaire mais pas vers la membrane cytoplasmique. Donc là dose injectée De PTC124 dans le cas deux (0,3 mg/ml) est insuffisant. Dans le troisième cas il y a une injection plus importante de PTC124 (0,9m...

• la mucovisidose

• muco

    III. Prise en charge de l'individu 3.1 Objectif de la prise en charge ..............................................................................................p 3.2 Prise en charge thérapeutique ...........................................................................................p (Education thérapeutiques ,prises en charge respiratoire et infectieuse) 3.3 Prises en charge digestive et nutritionnelle .........................................................................p...

• Amphibian (animal) - biology.

  strong enough to kill potential predators. C Hearing, Vision, and Vocalizations Amphibians rely on their senses to find food and evade predators. Amphibians lack external ears but have well-developed internal ears. Hearing is most acute in frogs,which typically have a middle ear cavity for transferring sound vibrations from the eardrum, or tympanum, to the inner ear. Frogs and toads also use their keen hearingin communicating with one another. Using a true voice box, or larynx, and a large, exp...