If the blood temperature falls too low, this is also sensed by the brain and signals are sent to the cutaneous arteries (those supplying the skin) to constrict them. Warm blood is then retained deeper in the body and less heat is lost from the surface. If this is inadequate, the brain activates shivering. Each muscle tremor in shivering releases heat energy and helps warm the body back toward its 98.6 degrees set point. • This is an example of a. a negative feedback loop b. a positive feedback loop

If the blood temperature falls too low, this is also sensed by the brain and signals are sent to the cutaneous arteries (those supplying the skin) to constrict them. Warm blood is then retained deeper in the body and less heat is lost from the surface. If this is inadequate, the brain activates shivering. Each muscle tremor in shivering releases heat energy and helps warm the body back toward its 98.6 degrees set point. • This is an example of a. a negative feedback loop b. a positive feedback loop

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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