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In this unit, you have learnt that heart is a muscular organ situated in thorax covering with pericardium and consist of four chambers i.e. right atrium, left atrium, right ventricle and left ventricle. These atrium and ventricles are separated by interatrial septum and interventricular septum respectively. Left atrium and left ventricle as well as right atrium and right ventricle are connected with atrioventricular orifices where Mitral valve and tricuspid valve are situated respectively. Heart has its own special conduction system. It also has coronary arteries for its blood supply. The border of the heart as well as valve of the heart can also be identified by surface marking of the heart.
Fibroblast is the term applied to a cell of connective tissue which is separated from similar cells by some degree of the matrix material; fibroblasts secrete elastin and collagen
Ask queAffinities of ctenophora with platyhelminthesstion #Minimum 100 words accepted#
List the four phases of meiosis I, and briefly explain what occurs during each phase Prophase I: DNA coils into chromosomes, the nucleolus and nuclear envelope disappear, the m
What are the synthetic auxins and what are their uses? The Synthetic auxins like naphthalenic acid (NAA) and indolebutyric acid (IBA) are substances similar to IAA (a natural a
In what ways can we try to protect a species from extinction? We can attempt to protect species from extinction by making it illegal to kill the threatened animals or uproot o
Q. How are the male gametes and the male gametophytes formed in angiosperms? In the anthers of every stamen there are pollen sacs. Inside the pollen sacs there are microspore m
Determine the Testing for Albumin in Urine Acetic Acid Test About 2 - 8 mgm/dl of protein is excreted in urine which is not usually detected by routine test. The testing o
What is the etiological agent and the main manifestations of cholera? Cholera is a bacterial disease caused by the Vibrio cholerae. The disease is transmitted by fecal-oral rou
According to their morphology how are bacteria classified? Bacteria present dissimilar morphological patterns. A bacterium can be classified into coccus, bacillus, vibrion or s
D-glucose differs from D-galactose only in the arrangement around carbon 4. Therefore D-glucose and D-galactose are- Select one: a. enantiomers b. epimers c. mirror ima
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