Exam 22: The Animal Body and How It Moves

The first type of symmetry to develop,and seen in cnidarians,was:

Another name for red blood cells is ___________________.

In humans,the spine is made up of ____ vertebrae,and there are _____ pairs of ribs.

__________________________ are found in soft-bodied invertebrates,such as earthworms and jellyfish.

List the two principal types of cells of the immune system,and describe their functions.

Connective tissue includes blood cells.

The evolution of bilateral symmetry enabled animals to:

Which is incorrect about deuterostomes?

A type of connective tissue,called __________________,stores fat.

Muscle cells are unique because of the contractible protein fibers,called _____________________,within them.