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Gaseous Exchange
Gaseous exchange is take place on by both mantle and the gills. The gills of most bivalves are highly changed for filter feeding. They are derived from the primitive ctenidial by lengthening of the filaments on every side of filamentous axis. As the ends of long filaments became folded back towards the central axis; the ctenidial filaments took the shape of a long slender 'W'. The filaments lying beside each other became joined through ciliary junctions or tissue fusions, forming plate like lamellae along with many vertical water tubes inside. Thus water enters the incurrent siphon, propelled by ciliary action, then enters the water tubes by pores between the filaments in the lamellae proceeds dorsally into a common suprabranchial chamber and then out of the ex-current aperture.
Explain Irradiation The physical process of exposing an object, system, or a material to a high radiant energy for the sterilization or preservation.
Arterial Blood Gas Studies: Purpose 1) A measurement of partial pressure of oxygen and carbon dioxide in arterial blood, as well as the pH of the blood. 2) The Partial p
Palpation: Use the ball of one hand and move the hand from one side of the posterior thorax to other. Note presence of swelling, masses, muscle tone, fremitus and crepitation.
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How does the placement of veins help to carry out their function of transporting materials to and from the leaf ?
Q. How is the mesoderm (third germ layer) of triploblastic animals formed? The mesoderm shows from differentiation of endodermal cells that cover the dorsal region of the arche
Which one of the following does not follow the central dogma of molecular biology? 1. Pea 2. Mucor 3. Chlamydomonas 4. HIV HIV is the central dogma of molecular bi
Determine the reliability of the battery The issue of reliability of the battery has been addressed, with reasonably successful results. Clinical interpretation of the battery
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