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The fishes belong to class Pisces under vertebrates.2. In fishes, the respiratory system consists of mouth, pharynx, internal branchial apertures, branchial pouches and external branchial apertures.3. The branchial (gill) pouches are covered by mucous membrane which is thrown into folds called branchial (gill) lamellae.4. Fish keep its mouth open and lower the floor of the oral cavity. Then the water (with dissolved oxygen) enters oral cavity.5. While the mouth is closed, the floor of oral cavity is raised and the water from oral cavity flows into pharynx then into internal branchial apertures.6. The gill lamellae are now bathed with water and gaseous exchange takes place.7. Oxygen diffuses from water into the blood and 2 CO diffuses out from the blood into the water.8. Then the water flows out through external branchial apertures.9. The continuous opening and closing of mouth by a fish in water is to draw water into the oral cavity.
Define Extra enterocyte transfer - non haem iron absorption? Extra enterocyte transfer: Little is known about iron transport across the baso- lateral membrane. After crossing t
As heart failure sets in, there is activation of RAS (Fig 2.1). Adrenergic stimulation of beta-1 receptors in juxtaglomerular apparatus of the kidneys results in release of renin.
Cattle and buffalo diseases Rinderpest: Rinderpest is the most destructive of the virus diseases of cloven-footed animals, viz. cattle, buffaloes, sheep, goats, pigs and wil
Write the positive ion isoelectronic with neon The positive ion isoelectronic with neon must have 10 electrons and 11 protons, and thus must have an atomic number = 11. This i
The cytosolic surface of the erythrocyte plasma membrane is covered through a network of peripheral membrane proteins which make up the cytoskeleton in the figure. The
Define Interferons - Humoral Mechanisms Interferons are soluble proteins secreted naturally when cells become infected by foreign bodies. Infected lymphocytes release interfero
#FUCTIONS OF THE EPIDERMIS#
Define Precautions for preparation of bacterial smear 1. The slide should not be greasy. 2. Hold the slide by their edges only. 3. Label should not come in contact with s
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What is adaptive radiation? Adaptive radiation happens when a new population in a new environment, like an island, undergoes divergent evolution until the descendant population
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