BIOL164Ch4NotesWin12

BIOL164Ch4NotesWin12 - Ch. 4 Body Organization,...

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1 Ch. 4 – Body Organization, Homeostasis, and the Integumentary System • Key topics in this chapter : – Tissues – Organs and organ systems (in general) – Homeostasis – The integumentary system (= the skin and its associated structures) Reminder: levels of organization • There are 4 general tissue types : – 1. Epithelial tissue – 2. Connective tissue – 3. Muscle tissue – 4. Nervous tissue (Ch. 2) (Ch. 4) (Ch. 3) Figure 1.4a
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2 Epithelial tissue • Covers body surfaces • Lines hollow cavities and organs • Forms glands Figure 4.1 Figure 4.2 • Protects and physically supports organs Physio- logically supports organs – E.g. blood supports organs by providing nutrients and immunity • Stores fat Connective tissue
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3 Muscle tissue • Contracts to move the body and to move substances through the body Figure 4.3 Nervous tissue • Conducts nerve impulses from one part of the body to another • Functions in fast-acting communication and control •= neurons (nerve cells) + neuroglia (supporting cells) Figure 4.4
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4 Reminder: levels of organization The next three slides introduce the 11 major organ systems and describe the main functions of each Figure 1.4b Figure 4.7
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5 Figure 4.7 Figure 4.7
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6 Homeostasis: the core principle of physiology • Its literal meaning = “same standing” • It is the body’s maintenance of a relatively constant internal environment (within limits) despite changes in the
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This note was uploaded on 03/12/2012 for the course BIOL 164 taught by Professor Tonychennault during the Winter '12 term at Clark College.

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BIOL164Ch4NotesWin12 - Ch. 4 Body Organization,...

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