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Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hydras, jelly fishes, sea anemones and corals. You have olreacly studied about Cnidarialis in Units 4 and 7 of LSE-09 course. These are often brilliantly colourcd. They exhibit radial symnietry, The Cnidarians possess two basic metazoall structural features. Onc, there is an intenla1 space for digestion, called in Cnidarinns as gastrovascular cavity. This cavity lies along the polar axis of the animal atid opens to tlie outside at one end to for111 noutli, Tlie presence of a mouth a~id digestive cavity permits the use of a mucll greater rnlige of food sizes than is possible in tlie protozoarls and sponges. Two, in Clidariails a circle of tentacles, representing exte~lsiolls of the body wall, surrounds tlie ~lioiltli to aid in tlie capture and ingestion of food. Tlie Cnidarian body wall consists of three basic layers: an outer lnycr of cpidennis, nn inner layer of elidoder~nal cells lining Ilie gastrovnscilar cavity, and between these two a layer called mesoglea. The rnesoglea ranges from n tliin, non cellilar membranc to a thick, fibrous, jelly-like, coid lnaterial with or without wanderillg a~noebocytes, A considerable number of different cell types compose tlie epidermis and gastrader~nis, but there is only a limited degree of organ development.
Structure and Content of Halsted Reitan battery Although there are several versions of the Halsted Reitan battery, the differences tend to be minor, and there appears to be a
Q. Define Premotor Cortex Located in the frontal lobes? Premotor Cortex - Involved in control of more complex, learned motor skills like writing, driving, etc. Broca's area or
Define the Nutritional assessment methods? Nutritional assessment methods commonly used are enumerated herewith. 1. Bodyweight measurement s remain to be the most practical
Animal studies Most toxicological data for risk assessment are derived from the animal studies and it is, therefore, essential that these studies be conducted following widel
Adverse Effects of Ribavirin Systemic ribavirin has been associated with hemolytic anemia. Oral ribavirin plus interferon appears to cause a higher incidence of cough, pruritu
Sarcodine protozoans are amoebas, and there are two types of them: shelled and naked. As you examine the prepared slides you should be able to see water expulsion vesicle, nucleus,
Phosphorus Cycle - Nutrient Cycles Phosphorus is a very important nutrient because of its role in the form of phosphate, in reactions that store and release energy. The availa
What do you understand by Exoskeleton. Supporting structures of skeleton not surrounded by the body. Endoskeletal elements are secreted by an underlying epidermis and one side
Define Clinical Assessment For Vitamin A? Clinical features of deficiency occur as ocular and extra ocular lesions. Ocular lesions affect the posterior segment of the eye init
poor skin turgor js indicative of what
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