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PHYL 1010X (23)
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Module I - Unit I.docx

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Department
Physiology
Course
PHYL 1010X
Professor
n/a
Semester
Summer

Description
Module I Introduction to Physiology INTRODUCTION: An understanding of the human body requires an appreciation of structure, function, and control. This  unit emphasizes that point, and provides preliminary information on the nature and hierarchical organization of  cells, organs and organ systems. UNIT OBJECTIVES: The levels of organization in the human body are summarized in figure 1­1 and the organ systems in  table 1­1. Levels of Organization: Figure ­1: Levels of organization and the related fields of study  M  ajor   P  hysiological Systems:  System Name Organs or Tissues Major Functions Circulatory Heart, blood vessels, blood Transport of materials between all cells of the  body Digestive Stomach, intestines, liver, pancreas Conversion of food into particles that can be  transported into the body Elimination of some wastes Endocrine Thyroid gland, adrenal gland Coordination of body function through synthesis  & release of regulatory molecules Immune Thymus, spleen, lymph nodes Defense against foreign invaders Integumentary Skin Protection from external environment Musculoskeletal Skeletal muscles, bones Support & movement Nervous Brain, spinal cord Coordination of body function through electrical  signals & release of regulatory molecules Reproductive Ovaries & uterus, testes Perpetration of the species Respiratory Lungs, airways Exchange of O 2& CO  2etween the internal &  external environments Urinary Kidneys, bladder Maintenance of water & solutes in the internal  environment 1 Module I Introduction to Physiology Waste removal Major Functions (In­Depth): Circulatory • Transport of blood throughout the body’s tissues Digestive • Digestion & absorption of organic nutrients, salts & water Endocrine • Regulation & coordination of many activities in the body including o Growth, metabolism, reproductions, BP, electrolyte bal
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