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Rigor mortis occurs because?
Lack of O2 and blood being provided to the bones
What do muscle fibers need to reset the myosin heads?
ATP binds myosin, allowing it to release actin and be in the weak binding state (a lack of ATP makes this step impossible, resulting in the rigor state characteristic of rigor mortis). The myosin then hydrolyzes the ATP and uses the energy to move into the "cocked back" conformation.
What can cause tetanus?
Depression and lack of social activity
Can lack of sleep cause suicidal toughts?
it's much more likely that the lack of sleep itself is not the cause of the suicidal thoughts, but is another symptom of depression. But, yes, lack of sleep can cause one to feel meh, and possibly simulate depression.
Can lack of oxygen cause depression?
If someone is aware of this lack of oxygen, yes. A lack of oxygen seems life threatening, and may cause someone to go through DABDA, or the five stages of grief, which does include depression.
Does Depression cause fatigue?
Depression causes lack of motivation. Feeling sluggish and tired are a result. Depression can also cause sleep insomnia or make you over sleep.
What happens to the muscles when there is a lack of ATP?
When a body dies, stored calcium leaks and calcium pumps don't function anymore, so the extra calcium causes actin and myosin filaments of muscle fibers to become link, which causes the body to stiffen.
What cause a person not to sleep?
stress,depression,lack of food, lack of water, smoking, drinking,
How is pain connected with fatigue and depression?
It is known that pain in itself can actually cause depression. Fatigue from lack of sleep or the illness itself also contribute to depressed feelings.
When a person dies rigor mortis sets in as atp synthesis ceases why does the lack of atp in muscle cells cause the muscles to become rigid?
The answer is that muscles use ATP to relax, allowing the next part of the contraction process to occur. After death, a lack of energy causes a failure of muscle relaxation on a microsopic level and so a stiffness. Rigor Mortis is caused by lack of ATP which causes tight binding of myosin 2 heads to actin. This doesn't last long, however, as the muscles quickly decompose and become soft again.
Can depression cause abusive relationships?
Yes, depression and/or anxiety issues can cause abusive relationships, although there are many other reasons why abuse is caused, such as lack of intimacy, jealousy and many other things.
What would happen if ATP were suddenly not available after the sarcomere had started to shorten?
Without ATP, the myosin heads would remain bound to actin filaments as they lack the energy to detach, preventing further cross-bridge cycling. As a result, muscle contraction would be halted in the shortened state, leading to muscular rigidity or cramping.
