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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.
In an adult male, which of the following is true? A. The plasma membranes of Leydig cells contain LH receptors. B. The plasma membranes of Sertoli cells contain FSH receptor
Oxides of sulphur: It includes SO 2 , SO 3 . It is a colorless gas having sharp, pungent and suffocating odour. It is soluble in water and forms H 2 SO 4 . Sourc
SIMPL E EPITHELIA (UNILAYERED EPITHELIA) - 1 . SIMPLE SQUAMOUS EPITHELIUM (PAVEMENT EPITHELIUM) - It is composed of large flat cells whose edges fit closely toge
Dietary management of sepsis without MODS
Q. Investigation of Tricuspid stenosis by Echocardiography? Findings are subtle. One should carefully search for organic tricuspid valve involvement in all rheumatic heart dise
General guidelines for use of BONE GRAFTING 1. The surgical site should be prepared, that is it should be free of granulation tissue. 2. For autogenous grafts- the donor sit
Heteroduplex Dna is generated by the base pairing between complementary single strands derived from the different parental duplex molecules; heteroduplex DNA molecules occuring du
How sugar play a major role in preservation? In so many products, sugars play a major role in preservation. The addition of monosaccharides, like glucose or fructose, to jams a
LOCOMOTION IN STAR FISH - With the help of tube feet aided by fluid pressure in them. In a tube feet upper ampulla, middle podium and lower sucker present.
Why is it rare to find hemophilic women? There are less hemophilic women than hemophilic men because women need to have two X chromosomes affected to develop the disease while
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