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Slide 0 Copyright © 2004. Mosby Inc. All Rights Reserved. Chapter 3 Organ Systems of the Body
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Slide 1 Copyright © 2004. Mosby Inc. All Rights Reserved. Definitions and Concepts Organ—a structure made up of two or more kinds of tissues organized in such a way that they can together perform a more complex function than can any tissue alone Organ system—a group of organs arranged in such a way that they can together perform a more complex function than can any organ alone
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Slide 2 Copyright © 2004. Mosby Inc. All Rights Reserved. (F 3-1)
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Slide 3 Copyright © 2004. Mosby Inc. All Rights Reserved. Definitions and Concepts A knowledge of individual organs and how they are organized into groups makes more meaningful the understanding of how a particular organ system functions as a whole
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Slide 4 Copyright © 2004. Mosby Inc. All Rights Reserved. Integumentary system (F 3-2) Structure—organs Skin Hair Nails Sense receptors Sweat glands Oil glands (Cont’d…) Organ Systems
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Slide 5 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Functions Protection Regulation of body temperature Synthesis of chemicals Sense organ
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Slide 6 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Skeletal system (F 3-3) Structure Bones Joints Functions Support Movement (with joints and muscles) Storage of minerals Blood cell formation
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Slide 7 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Muscular system (F 3-4) Structure Muscles o Voluntary or striated o Involuntary or smooth o Cardiac Functions Movement Maintenance of body pressure Production of heat
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Slide 8 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Nervous system (F 3-5) Structure Brain Spinal cord Nerves Sense organs
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Slide 9 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Function Communication Integration Control Recognition of sensory stimuli System functions by production of nerve impulses caused by stimuli of various types Control is fast acting and of short duration
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Slide 10 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Endocrine system (F 3-6) Structure Pituitary gland Pineal gland Hypothalamus Thyroid gland Parathyroid gland Thymus Adrenal glands Pancreas Ovaries (female) Testes (male)
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Slide 11 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Functions Secretion of special substances called hormones directly into the blood Same as nervous system—communication, integration, and control Control is slow and of long duration Examples of hormone regulation o Growth o Metabolism o Reproduction o Fluid and electrolyte balance
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Slide 12 Copyright © 2004. Mosby Inc. All Rights Reserved. Cardiovascular (circulatory) system (F 3-7) Structure Heart Blood vessels Functions Transportation Regulation of body temperature Immunity (body defense) Organ Systems
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Slide 13 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Lymphatic system (F 3-8) Structure Lymph nodes Lymphatic vessels Thymus Spleen Functions Transportation Immunity (body defense)
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Slide 14 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Respiratory system (F 3-9) Structure Nose Pharynx Larynx Trachea Bronchi Lungs
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Slide 15 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Functions Exchange of waste gas (carbon dioxide) for oxygen in the lungs Area of gas exchange in the lungs called alveoli Filtration of irritants from inspired air Regulation of acid-base balance
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Slide 16 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Digestive system (F 3-10) Structure Primary organs o Mouth o Pharynx o Esophagus o Stomach o Small intestine o Large intestine o Rectum o Anal canal
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Slide 17 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Accessory organs o Teeth o Salivary glands o Tongue o Liver o Gallbladder o Pancreas o Appendix
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Slide 18 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems (…Cont’d) Functions Mechanical and chemical breakdown (digestion) of food Absorption of nutrients Undigested waste product that is eliminated is called feces Appendix is a structural but not a functional part of digestive system Inflammation of appendix is called appendicitis
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Slide 19 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Urinary system (F 3-11) Structure Kidneys Ureters Urinary bladder Urethra
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Slide 20 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Functions “Cleaning” or clearing blood of waste products— waste product excreted from body is called urine Electrolyte balance Water balance Acid-base balance In male, urethra has urinary and reproductive functions
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Slide 21 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Reproductive system Structure Male o Gonads—testes o Genital ducts—vas deferens, urethra o Accessory gland—prostate o Supporting structures—genitalia (penis and scrotum)
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Slide 22 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Female o Gonads—ovaries o Accessory organs—uterus, uterine (fallopian) tubes, vagina o Supporting structures—genitalia (vulva), mammary glands (breasts)
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Slide 23 Copyright © 2004. Mosby Inc. All Rights Reserved. Organ Systems Functions Survival of genes Production of sex cells Development and birth of offspring Nourishment of offspring Production of sex hormones
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Slide 24 Copyright © 2004. Mosby Inc. All Rights Reserved.
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