Why are skeletal muscles called voluntary? contraction of specific muscles occurs to maintain body posture and body position. only these muscles are stimulated to contract by the central nervous system. these muscles maintain a constant rhythm of contraction. their contractions can be consciously controlled. all of the answers are correct.

Ais a person who demonstrates effective communciation, self-directed learning, critical thinking, and responsible citizenship

How can a general chart for physical activity recommendations patients improve their overall health?

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected.b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans.c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host.d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.