This page details the three muscle types in vertebrates: cardiac, smooth, and skeletal muscles. Cardiac muscle, involuntary and reliant on oxygen, pumps blood, while smooth muscle regulates various fu...This page details the three muscle types in vertebrates: cardiac, smooth, and skeletal muscles. Cardiac muscle, involuntary and reliant on oxygen, pumps blood, while smooth muscle regulates various functions without direct neuronal control. Skeletal muscle enables voluntary movement with specialized fibers. Muscle contractions are powered by ATP and facilitated by the sliding-filament model, with fibers classified as Type I or Type II.
Fossils fuels are extractable, nonrenewable sources of stored energy created by ancient ecosystems. The natural resources that typically fall under this category are coal, oil (petroleum), and natural...Fossils fuels are extractable, nonrenewable sources of stored energy created by ancient ecosystems. The natural resources that typically fall under this category are coal, oil (petroleum), and natural gas. Coal formed from swamp vegetation, while oil and natural gas formed from marine microbes. In both cases, ancient organisms were transformed under high temperatures and pressures over millions of years.
