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.
because they are classified as mammals and mammals are in the animalia (animal) kingdom Like it or not we humans are animals. We are not single celled organisms, our cells ca â¦ nnot produce our own food, and we do not produce spores and feed off the nutrients we get out of decaying matter. 7 people found this useful.es. The human's phylum is Chordata (vertebrate). The human's class is mammalia. It's order is primate (the same as apes). It's family is Hominidae (apes that have no tail and â¦ can gather food with their hands.) The Human's sub-family is Homininae. It's tribe is Hominini.