Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Classify the different types of joints on the basis of structure
Explain the role of joints in skeletal movement

Just about every kid needs to have stitches at one time or another. Whether you're playing a bit too hard and conk your head - ouch! - on your dresser, or your little brother trips you and you cut your knee, sometimes your skin needs some extra help to heal. That's where stitches come in - they are used to join your skin back together. Read this article to find out all about kids and stitches.