What is rigor mortis, Biology

Assignment Help:

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.


Related Discussions:- What is rigor mortis

Deficiency diseases, DEFICIENCY DISEASES Animals may suffer from diseases...

DEFICIENCY DISEASES Animals may suffer from diseases caused by deficiencies of energy and proteins, mineral nutrients and vitamins, which generally occur either due to deficiency

Angiosperm, What is morphological nature of angiosperm

What is morphological nature of angiosperm

Describe surgical treatment prosthetic valve endocarditis, Describe Surgica...

Describe Surgical Treatment prosthetic valve endocarditis ? If there is definite indication for early surgery, the current understanding is to proceed with valve replacement ir

What is short acting insulin, Q. What is Short acting insulin? Short ac...

Q. What is Short acting insulin? Short acting: This type of insulin begins working quickly, works hardest 2- 3 hours after injection but is completely gone after 4-6 hrs. So if

Results-types of surgery in ar, Results: Largely depends on the LV functi...

Results: Largely depends on the LV function. In most centres surgical mortality is 3 to 4 percent. For patients with severe LV dysfunction the immediate and late results of sur

What is the neurotransmitter of the neuromuscular junction, What is the neu...

What is the neurotransmitter of the neuromuscular junction? How does the nervous system trigger muscle contraction? The nervous cells that trigger the muscle contraction are th

Body temperature and room temperature , You ran both a body temperature and...

You ran both a body temperature and room temperature test for each enzyme you tested. Did the two temperatures seem to have an effect on the enzyme Exercise? Why or why not?

Explain the use of enzyme assay, Explain the use of Enzyme assay Enzym...

Explain the use of Enzyme assay Enzyme assay is also used for research into such processes as the browning of plant products which poses problems during value addition. The br

Explain about simple proteins, Explain about Simple proteins Simple pro...

Explain about Simple proteins Simple proteins are those which are made of amino acid units only joined by peptide bond.  Upon hydrolysis they yield a mixture of amino acids and

How are the proteins important in metabolism of lens, How are the proteins ...

How are the proteins important in metabolism of lens? Proteins Physical slate of protein is important for transparency of lens. Morner first time classified protein of l

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd