BIOL 1202 Chapter : CH 40
Document Summary
Concept 40. 1: animal form and function are correlated at all levels of organization. Physical laws, especially physics of exchanging materials with environment, limits range of animal forms. Large, complex animals have highly folded or branched internal surfaces. Exchange is by diffusion specialized for exchanging materials. Covers the outside of the body and lines the organs and cavities within the body. Functions mainly to bind and support other tissues. Composed of sparsely packed cells scattered throughout an extracellular matrix. Composed of long cells called muscle fibers capable of contracting in response to nerve signals. Sense stimuli and transmits signals throughout the animal. Nerve cells responsible for receiving and transmitting is the neuron. Organ systems carry out the major body functions of most animals. Concept 40. 2: feedback control loops maintain the internal environment. Interstitial fluid: fluid that fills spaces between cells. Homeostasis: maintaining internal variables within an acceptable range. Regulator: uses internal control mechanisms to moderate internal change in the.
