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Lecture 1 on Introduction to Physiology

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Biological Sciences

BIOB30Fall2011 Chapter 1 Introduction to PhysiologyLecture 1 Physiological Systems o Physiology is the study of the normal functioning of a living organism and its component partso Anatomy is the study of structure with less emphasis on function o Physiology deals with organsorgan systemsorganismspopulation of species before is cell biology and after is ecology o Cell is the smallest unit of structure capable of carrying out all life processes o Tissues are collections of cells that carry out related functionso Tissues form structural and functional units known as organs o Groups of organs integrate their functions to form organ systems o There are 10 physiological organ systems o Integumentary system is composed of the skin and forms a protective boundary which separates the bodys internal environment from the external environment o Musculoketal system provides support and body movement o Respiratory system exchanges gases o Digestive system takes up nutrients and water and eliminates wastes o Urinary system removes excess water and waste materials o Reproductive system produces eggs and sperm o The remaining fours systems extend throughout the body o Circulatory system distributes materials by pumping blood through vessels o Nervous and Endocrine system coordinate body functions o Immune system intercept material that may enter through exchange surfaces or through a break in the skin and they protect the internal environment from foreign invadersclosely associated with the circulatory system o T
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