Physiology

Human Physiology: The Mechanisms of Body Function (13th by Eric Widmaier, Hershel Raff, Kevin Strang

By Eric Widmaier, Hershel Raff, Kevin Strang

Eric Widmaier (Boston University), Hershel Raff (Medical university of Wisconsin), and Kevin Strang (University of Wisconsin) have taken at the problem of holding the strengths and acceptance of Vander's Human body structure: The Mechanisms of physique functionality. relocating past the directory of mere evidence, it stresses the causal chains of occasions that represent the mechanisms of physique functionality. the basic goal of this textbook is to give the rules and proof of human body structure in a structure that's appropriate for undergraduates despite educational historical past or box of study.

Vander's Human body structure, 13th variation, incorporates at the culture of readability and accuracy, whereas refining and updating the content material to satisfy the wishes of today's teachers and scholars. The 13th version encompasses a streamlined, clinically orientated concentration to the examine of human physique structures. It has additionally spoke back to reviewer requests for extra medical purposes. body structure Inquiries are maintained in the course of the chapters. those critical-thinking questions linked to figures are only another chance so as to add to the student's studying adventure.

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The resulting increased blood flow increases the rate at which nutrients and oxygen are delivered to that area, and the rate at which wastes are removed. The significance of local responses is that they provide individual areas of the body with mechanisms for local self-regulation. 7 The Role of Intercellular Chemical Messengers in Homeostasis Essential to reflexes and local homeostatic responses—and therefore to homeostasis—is the ability of cells to communicate with one another. In this way, cells in the brain, for example, can be made aware of the status of activities of structures outside the brain, such as the heart, and help regulate those activities to meet new homeostatic challenges.

Because of these exchanges, concentrations of dissolved substances are virtually identical in the plasma and interstitial fluid, except for protein concentration (which, as you will learn in Chapter 12, remains higher in plasma than in interstitial fluid). With this major exception, the entire extracellular fluid may be considered to have a homogeneous solute composition. indd 5 5 30/01/13 12:53 PM Rev. 3 Fluid compartments of the body. Volumes are for an average 70-kilogram (kg) (154-pound [lb]) person.

In fact, some variables undergo fairly dramatic swings around an average value during the course of a day, yet are still considered to be in balance. That is because homeostasis is a dynamic, not a static, process. indd 6 30/01/13 12:53 PM Blood levels of glucose (mg/dL) Rev. M. M. M. M. M. 4 Changes in blood glucose concentrations during a typical 24 h period. Note that glucose concentration increases after each meal, more so after larger meals, and then returns to the premeal concentration in a short while.

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