BIO2A03-2011-L1-template

BIO2A03-2011-L1-template - 4 connective tissues Subunits of...

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Biology 2A03‐ 2011 Lecture 1 Introduction to Physiology & Homeostasis
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What is Physiology? The goal of physiology is to explain the physical and chemical factors for the origin and progression of life OR How animals work! Medical Physiology or Pathophysiology abnormal physiology as the result of disease Disciplines: Cellular Physiology, Developmental Physiology Neural, Renal, Muscle, Cardiovascular…… Physiology Comparative, Animal or Integrative Physiology how animal adapt to “abnormal” environments or life histories. Also environmental physiology, evolutionary physiology and physiological ecology
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68 - 81ºC 2000-3000m High H 2 S 4000-5000m 10% O 2 0% O 2 !
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Hierarchical organization of the body Cells Tissues Organs Functional units Organ Systems Organism Differentiated and specialized 1) muscle, 2) nerve, 3) epithelial 4) connective cells Aggregate of specialized cells 1) muscle, 2) nerve, 3) epithelial
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Unformatted text preview: 4) connective tissues Subunits of an organs (e.g. multiple nephrons in a kidney) Composed of the 4 tissue-types in different proportions and patterns A collection of organs that function together e.g. Circulatory System = heart, blood vessels, blood Figure 1.2 Hierarchical organization of the body Cells: in humans over 200 distinct kinds 1) Muscle cells : specialized for contraction to produce movement 2) Nerve cells : generate and propagate electrical signals 3) Connective tissue cells : connect and support body structures e.g. bone, collagen, cartilage 4) Epithelial cells : secretion and absorption; protective role e.g. skin Subtypes can exist: Muscle – skeletal , movement of limbs and skin - cardiac , movement of heart - smooth , dilation of blood vessels Collec<on of organs that work together to accomplish a par<cular task...
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BIO2A03-2011-L1-template - 4 connective tissues Subunits of...

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