We are always gaining more understanding of science, if they were facts it would be unchanging. however we are learning still so they are not set in stone... if that makes any sense
Answer: Reproduction. One must reproduce in order to continue the generational line.
Answer: calcium is released from the sarcoplasmic reticulum
Explanation:
Muscle contraction is the stimulation of sites that produce stress within muscle fibres.
Calcium ions bind to tropomyosin in inducing muscle fibre contraction, exposing active site for Crossbridge formation on actin. Then ATP binds to myosin, transferring the myosin to its high-energy state, freeing the myosin head from the active actin site. Triggering tension-generating sites within muscle fibres.
Hence, the contraction process is initiated with teh relaease of calcium from sarcoplasmic reticulum.
Answer:
Engineering has allowed for advancments in medicine far beyond what we thought was ever possible. One example is the ability to genomap, and from that new treatments and possibly cures for cancer are created. New tools are made that help in the everyday life of a medical provider, such as new clamps that can better grasp a vein or artery. Lastly, the development of new medicine through BioMed engineers has allowed for the treatment of kidney disease, and liver issues.
I hope this can help :)