the_human_body - The Human Body: An Orientation Chapter 1...

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Unformatted text preview: The Human Body: An Orientation Chapter 1 Anatomy & Physiology • Nasser-Eddin M., PhD verview of Anatomy and Physiology verview of Anatomy and Physiology • Anatomy – the study of the structure of the body and the relationships of the various parts of the body • Gross or macroscopic (visible structures) • Microscopic (cytology, histology) • Developmental – structural changes over time (embryology) • Physiology – the study of the functions of the parts of the body, includes specific organ systems and molecular and cellular levels (neurophysiology, cardiovascular physiology, electrophysiology) Levels of Structural Organization Levels of Structural Organization Chemical – atoms combine to form molecules Cellular – molecules interact to make up cells Tissue – cells are grouped into tissue Organ – tissues compose organs Organ system – organs function together to form organ systems Organism (individual) – made up of the organ systems Levels of Structural Organization Levels of Structural Organization Atoms Molecule Organelle Cell Tissue Organ Organ System Organism rgan Systems rgan Systems • Skeletal system • Composed of bone, cartilage, and ligaments • Protects and supports body organs • Provides the framework for muscles • Site of blood cell formation • Stores minerals rgan Systems rgan Systems • Muscular system • Composed of muscles and tendons • Allows manipulation of the environment, locomotion, and facial expression • Maintains posture • Produces heat rgan Systems rgan Systems • Nervous system • Composed of the brain, spinal column, and nerves • Is the fast-acting control system of the body • Responds to stimuli by activating muscles and glands rgan Systems rgan Systems • Cardiovascular system • Composed of the heart and blood vessels • The heart pumps blood • The blood vessels transport blood throughout the body CARDIOVASCULAR SYSTEM CARDIOVASCULAR SYSTEM rgan Systems rgan Systems • Respiratory system • Composed of the nasal cavity, pharynx, trachea, bronchi, and lungs • Keeps blood supplied with oxygen and removes carbon dioxide rgan Systems...
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the_human_body - The Human Body: An Orientation Chapter 1...

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