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Explore the fundamental concepts and systems of human anatomy and physiology, including levels of organization, homeostasis, cellular structure, the cell membrane, and transportation mechanisms within cells. Learn about body tissues and their functions.
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By : AguslinaKirtishanti Introduction of Human Anatomy and Physiology
REFERENCES • Martini FH, 2006, Fundamentals of Anatomy & Physiology, 7th edition, Benjamin Cummings, San Fransisco, CA 94111, USA. • Fox SI, 1999, Human Physiology, 6th edition, McGraw-Hill Copany, USA. • Guyton AC, 2000, Textbook Medical of Physiology, 10th edition, WB Saunder Co, Philadelphia, USA.
DEFINITION • Anatomy : the study of internal and external structures of the body and physical relationships among body parts. • Physiology is the study of the function of anatomical structures.
The Organ System • The Integumentary System • The Skeletal System • The Muscular System • The Nervous System • The Endocrine System • The Cardiovascular System • The Lymphatic System • The Respiratory System • The Digestive System • The Urinary System • The Reproductive System (Male and Female)
Homeostasis • Homeostasis : Physiological systems work together to maintain a stable internal environment. • Failure to maintain homeostasis due to illness or even death. • Two general mechanism are involved in homeostasic regulation : • Autoregulation or intrinsic regulation • Extrinsic regulation
Homeostasis • A homeostatic regulatory mechanism consists of three parts : • Receptor • Control center • Effector
Homeostasis • The homeostatic regulatory mechanism involve : • Negative feedback • Positive feedback
Cellular Level Organization • The basic concepts of this theory : • Cells are the building blocks of all plants and animals. • All cells come from the division of preexisting cells. • Cells are the smallest units that perform all vital physiological functions. • Each cell maintains homeostasis at the cellular level.
The Cell Membrane • Functions of cell membrane : • Physical isolation • Regulation of exchange with the environment • Sensitivity to the environment • Structural support • The cell membrane is extremely thin and delicate, ranging from 6 to 10 nm in thickness. This membrane contain lipids, proteins and carbohydrates.
The Cell Membrane Membrane Lipids Phospholipidbilayer(42%), in each half of the bilayer, the phospholipid lie with their hydrophilic heads at the membrane surface and their hydrophobic tails on the inside. Membrane Proteins 55% of the weight of a cell membrane. There are two general structural classes of membrane proteins : Integral proteins and Peripheral proteins.
The Cell Membrane The functional protein include the following : • Anchoring proteins • Recognition proteins • Enzymes • Receptor proteins • Carrier proteins • Channels
The Cell Membrane Membrane Carbohydrates The carbohydrates in the cell membrane are components of complex molecules such as proteoglycans, glycoproteins and glycolipids. The function of membrane carbohydrates are : • Lubrication and protection • Anchoring and locomotion • Specificity in binding • Recognition
How Things Get Into and Out of Cells The three major categories are as follows : • Diffusion : simple diffusion and osmosis. Diffusion is a passive process. • Carrier-mediated transport. It can be passive or active. For examples : facilitated diffusion, the sodium-potassium exchange pump, secondary active transport. • Vesicular transport : endocytosis and exocytosis.
BODY TISSUES • Epithelial Tissue: simple epithelia dan stratified epithelia, glandular epithelia • Connective Tissues : bone, hyaline cartilage, dense fibrous tissue, areolar tissue, adipose tissue, reticular connective tissue, blood. • Neural Tissue : neuron dan supporting cells. • Muscle Tissue : skeletal muscle tissue, smooth muscle tissue, cardiac muscle tissue.