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In smooth muscle the calcium needed for contraction comes mainly from?
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What minerals are needed for muscle contraction and conduction of nerve impulses?
phosphorous.
What two things are needed for cells to get energy?
Lots of things are needed for the muscle cell to work. For contraction to take place, actin and myosin interact with each other, Sodium and Potassium ions are exchanged across the cell membrane, and calcium is also required.
What is the advantage of having many nuclei in a skeletal muscle fiber?
The ability to produce large amounts of the enzymes and structural proteins needed for contraction.
Why is vitamin D good for the cardiovascular system?
To geta better answer, Google American Heart Association articles from January 2008 and after, with Dr. Wang, Harvard researcher, who stated that smooth muscle contains Vitamin D receptors. Offhand, most likely because Vitamin D enables calcium uptake in the body and calcium is needed in proper amounts for muscle/nerve coordination (proper calcium/sodium/magnesium balance).
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.
What minerals are needed for normal muscle contraction?
Calcium
What minerals are needed for muscle contraction and conduction of nerve impulses?
phosphorous.
Are ATP and calcium both needed for muscle contraction to occur?
look in ur freaken book loser.
Why is calcium needed for muscle contraction?
Yes, calcium is necessary for the release of neurotransmitters that cause a muscle to initiate a contraction. Calcium is also needed to bind to the troponin-tropomyosin complex causing it to change position so the myosin head can attach to the actin molecule which results in contraction.
What provides the energy needed for muscle contraction?
mitochondria
Normally stored in the terminal cisternae of the sarcoplasmic reticulum?
One major function of the sarcoplasmic reticulum is the regulate the intracellular levels of CA2+ for contractions and relaxation for muscles. Sarcoplasmic Reticulum is a storage organelle with calcium ion pumps on membrane and use ATP to fuel pumps to get calcium ion inside it's cell and holds it. When contraction of muscle is needed calcium ion is then dumped into cytoplasm to cause contraction.
What is diffused with ATP and needed in muscle relaxation?
Calcium
What organelle would be most common in a muscle cell?
Mitochondria - to produce the ATP needed for muscle contraction
What is needed besides calcium for contraction to occur in muscles?
Two others are sodium and potassium.
What is the minimal stimulus needed to elicit a muscle contraction is called?
Threshold Stimulation
What is the minimal strengh of stimulation needed to elicit a muscle fiber contraction called?
Threshold
What two things are needed for cells to get energy?
Lots of things are needed for the muscle cell to work. For contraction to take place, actin and myosin interact with each other, Sodium and Potassium ions are exchanged across the cell membrane, and calcium is also required.
