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What type of respiration does earthworm has? In many complex animals, the cells of internal organs are distant from the outside environment; respiratory systems provide the passage of gases to or from internal tissues. In such kind of systems, there is a difference in pressure of a specific gas on opposite sides of a membrane, the gas diffuses from the side of greater pressure to side of lesser pressure, or each gas is transported independently of other gases. For i.e., in tissues a carbon dioxide concentration is high or oxygen concentration is low as a product of active metabolism, oxygen diffuses into the carbon dioxide and tissue diffuses out.
In many lower animals, gas diffusion takes place through a moist surface membrane, as in flatworms; through the thin body wall, as in earthworms; through air ducts, or tracheae, as in insects; or through specialized tracheal gills, as in aquatic insect larvae. In the gills of fish the blood vessels are exposed directly to the external aquatic environment. Oxygen–carbon dioxide swap occurs between the surrounding water & the blood within the vessels; the blood carries gases to and from tissues.
Prosthodontic considerations In order to achieve good results, understated features should always be examinated. 1. Smile Line: A high smile line increases the esthetic
Cytoplasmic inclusions are cytoplasmic molecular aggregates, like as pigments, organic polymers and crystals. They are not considered cell organelles. Fat drops and glycogen gra
Describe the Features common in ventricular outflow obstruction ? An ejection systolic murmur (ESM) due turbulent flow of blood through the obstruction. Hypertrophy of the cham
What is Coevolution ? There is considerable evidence that supports an interesting theory that two individual species can affect each others evolution in reciprocal fashion. In
INTERNA L STRUCTURE - Wall of auricles are thin than wall of ventricles, because they have to push the blood to ventricles only situated close to them. Walls of ventricl
Q. What is Gastritis? Gastritis is an inflammatory lesion of the gastric mucosa, (the inner lining of the stomach). The problem is seen in two forms: a) Acute gastritis
Q. Show the Communication process steps? Planning - Set goals. - Make a plan with alternatives. - Allow the counsellee to select a alternative which is feasible.
Staphylococcosis The disease is caused by the ingestion of preformed toxin released by Staphylococcus aureus. Epidemiology: Staphylococci grow in meat, dairy and bakery prod
Explain about the Observation and Classification of Arthropoda? Introduction In the previous unit you have examined the representatives of artliropoda. In this unit, you wi
Why Deficiency of Folate take place? If there is inadequate dietary folate, the activity of both the DNA and the methylation cycles, described above, will be reduced. A decrea
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