Collagen is a part of the connective tissue that in the skin helps in firmness, suppleness and constant renewal of skin cells. Collagen is vital for skin elasticity. Ligaments are another type of connective tissue that attach two bones and consequently hold the joints together.
There are at least 33 phyla (plural of phylum) of animals. Humans are members of the phylum Chordata. All of the chordates have elongated bilaterally symmetrical bodies. That is to say, the left and right sides are essentially mirror images of each other.
They are both primates which includes all primate species, and are in the same family which includes all of the great apes including chimpanzees, bonobos, gorillas, and orangutans.pecies-Homo sapiens. Humans and Chimpanzees are in the same kingdom, phylum, class, order, and family. This meaning that they are both animals who possess backbones, are endothermic (can maintain their own body temperature) and have mammary glands as well as hair or fur.