What is the function of the type of muscle that is pictured below? support and movement of the skeleton movement of food through the digestive system contraction and relaxation of the heart generation and conduction of electrical signals

What parts of the cardiovascular system are affected with atrial fibrillation?

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.

Deciding how to get home is considered a routine decision