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Q Is the tubular-dorsal nervous system of chordates associated to radial or lateral symmetry? How does that explain the complexity level of the nervous system reached by the vertebrate evolutionary branch?
The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry.
The presence of neural integrating centers with concentration of neurons in the brains and the spinal cord (CNS referred as central nervous system) allowed the increase of the interaction complexity between these environment and the animals. Receptor (afferent conduction) and efferent (motor, behavioral and regulatory reactions) functions come out more sophisticated in chordates due to the presence of more well-developed neural networks.
Q. What are some representatives of the echinoderm phylum? Starfishes, sea urchins, sea cucumbers (holothurians) and brittle stars are examples of echinoderms.
What compound composes most of the cell membrane? How is this compound suited to the function of the membrane? Phospholipid composes most of the cell membrane. The hydrophob
Define Regulation of Water Balance - For the Digestive Process? For the digestive process alone, the estimated daily volume of fluid that enters and leaves the gastrointestinal
Congenital Anomalies of Small and Large Intestines: 1) Intussusecption Intussusecption is the invagination or telescoping of one part of the intestine into another part
Hormone s . Cortical steroids (corticoids-hormones of adrenal cortex) are grouped into three catagories : mineralocorticoids, glucocorticoids and gonadocorticoids. (i) Mine
describe the structure of a lung in terms of covering membranes and cavities
Evidence for Existence of Light and Dark Reactions The process of photosynthesis was known in its bare outline already at the beginning of this century. But the phenomenon wa
Choice of graft material depends on - Its nature towards bone e.g., Osteoconductive or osteoinductive - Its architecture i.e., granular or block, pore si-e - Its origin -
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Blotting is the technique for detecting one RNA within the mixture of RNAs (a Northern blot) or one type of the DNA within of a mixture of DNAs (a Southern blot). A blot can prove
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