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Q. What is rigor mortis?
Dead bodies are at first limp. Many hours after death, skeletal muscles undergo a partial contraction that fixes the joints. This condition, called rigor mortis, may continue for 72 hours or more. When neurons signal living muscle fibres to contract, they do so with a neurotransmitter which is received at the surface of the muscle fiber. Signal makes the fiber open calcium ion channels and it is the calcium which causes the contraction. Muscle then removes the calcium in two ways: it stores some in its mitochondria and it pumps out the rest. When a body dies, stored calcium leaks and calcium pumps no longer function. Excess calcium causes the actin and myosin filaments of muscle fibers to remain linked, stiffening whole body until the muscles begin to decompose.
VASCULA R TISSUES (= FLUID TISSUES) - The vascular tissues are of two types: blood and lymph.
Approaches to Neuropsychological Assessment Probably the most useful model of neuropsychological interpretation is described in Reitan and Wolfson's (1993) four approaches to a
How do plants solve the problem of transporting substances throughout their tissues? In bryophytes the substance transport is completed by diffusion. In tracheophytes (pteridop
Food Applications of hemicelluloses The hemicelluloses find their application in food systems as emulsifer, stabilizer and binder in flavor bases, dressings and pudding mixes.
1. You have two bags of polymer. Bag A has 10 kgs of polymer with weight average molecular weight of 336.6 kg and Bag B has 20kg of polymer with weight average molecular weight 39
Explain Chemically Defined or Synthetic Media - Culture Media? Synthetic media are those media where detailed composition of the medium is known in terms of the chemical nature
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Explain Identification of Cancer Cells from Normal Cells? Cancer cells can be distinguished from normal cells by examining them under a microscope. In a specific tissue cancer
How the blood is circulated with the help of Heart?
Nucleic acid hybridization: This is a process by which a suitably labeled DNA or RNA from a known infectious agent is used to probe its complementary sequence unique to t
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