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:

Describe four important mechanoreceptors in human skin
Describe the topographical distribution of somatosensory receptors between glabrous and hairy skin
Explain why the perception of pain is subjective

Having achy joints and fatigue may seem like complaints of an elderly individual. Life with Lupus, however, can cause such conditions in a teenager. Learn more about the condition in this article and the links to related sites.

Growing up is something that most kids can't wait to do. As you grow up, you might experience growing pains. Use this site to learn more about the reasons for growing pains and what to do about them.

Resource provides a detailed overview of back pain. Content includes a look at what back pain is, its causes, screening and diagnosis, treatment, prevention options, and more.

This science fair project investigates whether video games, and other forms of mental distraction, have the power to relieve pain. You will research and learn about gatekeeper cells, which control how the brain perceives pain, and how endorphins help you reduce your perception of the actual amount of pain occurring.

Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan

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

Describe the basic functions of the chemical senses
Explain the basic functions of the somatosensory, nociceptive, and thermoceptive sensory systems
Describe the basic functions of the vestibular, proprioceptive, and kinesthetic sensory systems

Students discuss several human reproductive technologies available today pregnancy ultrasound, amniocentesis, in-vitro fertilization and labor anesthetics. They learn how each technology works, and that these are ways engineers have worked to improve the health of expecting mothers and babies.

Student teams learn about and devise technical presentations on four reproductive technology topics pregnancy ultrasound, amniocentesis, in-vitro fertilization or labor anesthetics. Each team acts as a panel of engineers asked to make a presentation to a group of students unfamiliar with the reproductive technology. Each group incorporates non-lecture elements into its presentation for greater effectiveness. As students learn about the technologies, by creating a presentation and listening to other groups' presentations, they also learn more about the valuable skill of technical communications.