OpenStax Anatomy and Physiology 2e
Transition Guide
OpenStax only undertakes revisions when they are necessary. In this case, our adopters and
other faculty advisors indicated that the amount of changes, errata fixes, link updates, and other
minor adjustments indicated that the formal revision was needed. This revision includes
substantial edits undertaken specifically for the second edition, and also represents a unification
of errata and updates made over the previous years.
We are aware that shifting sections and question numbers can lead to difficulty in the revision
transition process, so this revision was undertaken with no changes in chapter/section
arrangements, learning outcome numbers, or question numbers. (Note that many questions
were improved, but in a manner that preserved the numbering.) As a result, usage of homework
systems and even generalized course schedules should be minimally affected.
Note that the first edition remains available for use. Faculty who prefer to use or adapt material
from those editions still have the option to do so.
The table below includes the major content updates for the textbook, most of which involve
more accurate and inclusive explanations. We also have made several hundred edits involving
verbiage related to health, illnesses/disorders, gender, race, ethnicity, age, and related
terminology. In most cases, particularly when they involve only a single or a few words, those
edits are not noted in the detailed table below. Likewise, a number of illustrations and photos
(as well as their respective captions/credits) have been changed, but the table only notes those
where labels or related content within the graphics have also been changed.
Section 1.2 Added clarifying paragraph regarding sex and gender.
Sections 17.3 and 17.8 Improved terminology to eliminate gender associations with
hormones (e.g FSH), and specified secondary sex
characteristics resulting from estrogens, progesterone, and
testosterone.
Section 18.6 Table 18.2 (blood types) categories and data replaced for
currency and accuracy.
Improved terminology in discussion of inheritance related to
Rh factor and hemolytic disease of the newborn.
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