An animal that is infected with a parasitic organism that can also infect humans is called a(n) host.

answer; i believe that the correct answer is (lung);

the sphincter muscles at the end of the digestive tract is the anus.

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.