Sophia Learning
Sophia: Homeostasis: Lesson 2
This lesson will explain the process of homeostasis and how it allows organisms to maintain a stable internal environment. It is 2 of 10 in the series titled "Homeostasis."
Bozeman Science
Bozeman Science: Positive and Negative Feedback Loops
Paul Andersen explains how feedback loops allow living organisms to maintain homeostasis. He uses thermoregulation in mammals to explain how a negative feedback loop functions. He uses fruit ripening to explain how a positive feedback...
Bozeman Science
Bozeman Science: Homeostatic Evolution
Paul Andersen shows how homeostasis reflects of evolution through time. The endocrine system shows continuity through flatworms, earthworms and vertebrates. However the respiratory system shows change as organisms move onto land. The...
Bozeman Science
Bozeman Science: Homeostatic Disruptions
Paul Andersen explains how disruptions in homeostasis can affect biological systems at all levels. He uses the example of dehydration in animals to explain how disruptions at the cellular level can affect an organism.
Bozeman Science
Bozeman Science: Anatomy and Physiology Introduction
Paul Andersen introduces Anatomy and Physiology in this podcast. He starts by describing how the form of an object fits the function. He then explains the themes of homeostasis and hierarchy. He describes the four major types of tissues;...
Bozeman Science
Bozeman Science: Ap Homeostasis Review
Paul Andersen reviews the major concepts within the fourth unit of the new AP Biology framework. He begins by differentiating between negative and positive feedback loops. He explains how a stable internal environment is maintained...
Bozeman Science
Bozeman Science: Elements of a Feedback Loop
Paul Andersen defines the major elements of feedback loops. The receptors and effectors both sense and respond to changes in their environment. The following examples are used to illustrate the importance of feedback loops in maintaining...
Bozeman Science
Bozeman Science: Homeostatic Loops
Paul Andersen describes four important homeostatic loops in biology. He begins with a brief description of the elements of a homeostatic loop. He then describes how the hypothalamus helps us maintain a stable internal body temperature....