A&P Chapter 1 part b

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Anonymous
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89549
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A&P Chapter 1 part b
Updated:
2011-06-06 21:41:29
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Chapter part
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A&P Chapter 1 part b
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  1. Anatomical Position

    Standard anatomical body position:
    • Body erect

    • Feet slightly apart

    • Palms facing forward
  2. Regional Terms

    • Two major divisions of body:
    • Axial

    • Head, neck, and trunk

    • Appendicular

    • Limbs

    • Regional terms designate specific areas
  3. Body Planes
    Plane:
    • • Flat surface along which body or
    • structure is cut for anatomical study
  4. Sagittal plane
    • • Divides body vertically into right and left
    • parts

    • Produces a sagittal section
  5. Midsagittal (median) plane
    • Lies on midline
  6. Parasagittal plane
    • Not on midline
  7. Frontal (coronal) plane
    • • Divides body vertically into anterior and
    • posterior parts
  8. Transverse (horizontal) plane
    • • Divides body horizontally into superior and
    • inferior parts

    • Produces a cross section
  9. Oblique section
    • Cuts made diagonally
  10. Anatomical Variability
    • • Over 90% of all anatomical structures match
    • textbook descriptions, but:

    • • Nerves or blood vessels may be somewhat out of
    • place

    • Small muscles may be missing
  11. Dorsal cavity

    Two subdivisions:
    • Protects nervous system

    • • Cranial cavity
    • • Encases brain
  12. Thoracic cavity subdivisions:
    • Two pleural cavities

    • Each houses a lung
  13. Vertebral cavity
    • Encases spinal cord
  14. Ventral cavity

    Two subdivisions:
    • Houses internal organs (viscera)

    • • Thoracic cavity
    • • Abdominopelvic cavity
  15. Mediastinum
    • Contains pericardial cavity

    • Surrounds thoracic organs
  16. Pericardial cavity
    • Encloses heart
  17. Abdominopelvic cavity subdivisions:

    Abdominal cavity
    Contains stomach, intestines, spleen, and liver
  18. Pelvic cavity
    • • Contains urinary bladder, reproductive organs,
    • and rectum
  19. Serous Membrane (Serosa)
    • • Thin, double-layered membrane separated by
    • serous fluid

    • Parietal serosa lines internal body walls

    • Visceral serosa covers the internal organs
  20. Abdominopelvic Regions
    • Nine divisions used primarily by anatomists
  21. Abdominopelvic Quadrants
    • Divisions used primarily by medical personnel
  22. Other Body Cavities
    • Oral and digestive cavities

    • Nasal cavity

    • Orbital cavities

    • Middle ear cavities

    • Synovial cavities

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