Answers are grounded in this paper and cite their sources.
This book has gone through so many editions and is so widely used that a critical review of each new edition is hardly necessary or desirable. The author recognizes the tremendous growth of research in physiology. He has done his best to bring his book down to date, but he recognizes that there have been some new developments that may not be included. Dr. Howell realizes the difficulty of evaluating new theories and the necessity for avoiding too much discussion of this character in a textbook for students.
No takes yet. Share an insight, caveat, or question.
A 1931 study studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: