Lecture #1 Pt.3

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Last updated 2:29 AM on 8/24/26
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28 Terms

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Anatomical Body Planes and Sections

  1. Sagittal Plane

  2. Midsagittal Plane

  3. Parasagittal Plane

  4. Frontal/Coronal Plane

  5. Transverse Plane

  6. Oblique Plane


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Sagittal Plane

Vertical plane that divides through body parts

<p>Vertical plane that <strong>divides</strong> through <strong>body</strong> <strong>parts</strong></p>
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Midsagittal Plane

When right and left sides are equal in size and runs through the midline of the body or organ

<p>When right and left sides are <strong>equal</strong> in size and runs through the <strong>midline</strong> of the body or organ</p>
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Parasagittal Plane

When the body or organ is divided into unequal right and left sides, with the planes adjacent or parallel

<p>When the body or organ is divided into <strong>unequal</strong> right and left sides, with the planes <strong>adjacent</strong> or <strong>parallel</strong></p>
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Frontal/coronal Plane

Divides body or organ into anterior and posterior portions

<p><strong>Divides</strong> body or organ into <strong>anterior</strong> and <strong>posterior</strong> portions</p>
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Transverse Plane

Divides the body into superior and inferior portions

<p>Divides the body into superior and inferior portions</p>
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Oblique Plane

Passes through the body or an organ at a diagonal angle

<p>Passes through the body or an organ at a diagonal angle</p>
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Abdominal Cavity Quadrants

  1. Right Upper Quadrant (RUQ)

  2. Left Upper Quadrant (LUQ)

  3. Right Lower Quadrant (RLQ)

  4. Left Lower Quadrant (LLQ)


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Body Cavities

Are spaces within the body that contain, protect, seperate, and support internal organs.

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Dorsal Cavity

  • Located in the posterior portion of the body.

  • Subdivided into the cranial cavity, which is formed by the cranial (skull) bones and contains the brain, and the vertebral (spinal) canal which contains the spinal cord.


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Ventral Cavity

  • Located in the anterior portion of the body.

  • Subdivided by the diaphragm into the thoracic cavity, which contains the lungs and the heart and the abdominopelvic cavity.

  • Serous membraines line these body cavities


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Serous Membranes

Common function is lubrication by serous fluid to allow movement.

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Serous Membrane

  • Covers viscera within the thoracic and abdominal cavities.

  • Lines the walls of the thorax and abdomen and does not open to the exterior


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Mucous Membranes

Line a body that opens to the exterior

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Layers of Serous Membrane

  1. Parietal Layer

  2. Visceral Layer


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Parietal Layer

Lines the walls of the cavities

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Visceral Layer

Covers and adheres to the organs (viscera) within the cavities

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3 Body Regions that contain these membranes

  1. Pericardium

  2. Pleura

  3. Peritoneum


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Pericardium

Around the heart

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Pleura

Around the lungs

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Peritoneum

Around abdominal organs

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Levels of Structural Organization

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Atoms

“A” (cannot) “Tomos” (cut)
= “cannot cut”

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Atoms

Are the basic building blocks of all living things

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