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Homeostasis

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Positive Feedback Mechanisms

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Review:

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The Language of Anatomy &

Anatomical Position

• Universally accepted terminology

to identify body parts, regions, and

direction

• Anatomical position:

– Forward-facing

– Upright

– Feet slightly apart

– Upturned palms (facing you)

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Directional

Terms

• Also…

– Cranial =

Superior

– Caudal = Inferior

– Intermediate

– Superficial

– Deep

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Body Planes & Sections

Frontal or Coronal

Sagittal

Median or Midsagittal

Transverse or

Horizontal

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Organization of the Human Body

• Axial & Appendicular

portion

• Body Cavities

• Membranes

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Body Cavities (Lateral View)

Cranial

Cavity

Vertebral

Cavity

Thoracic

Cavity

Diaphragm

Abdominal

Cavity

Pelvic

Cavity

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Body Cavities (Anterior View)

Cranial

Cavity

Vertebral

Cavity

Pelvic

Cavity

Abdominal

Cavity

Diaphragm

Pleural

Pericardial

Cavity

Thoracic

Cavity

Mediastinum

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Membranes/ Serous Membranes

• Soft, thin, pliable

double-layer of tissue

that covers organs or

lines body cavities

• Cavity lining = parietal

serosa

• Organ lining = visceral

serosa

• Serous fluid

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Thoracic and Abdominopelvic

Membranes

Thoracic Cavity Pericardial

Cavity

Abdominopelvic

Cavity

Visceral Pleura Visceral

Pericardium

Visceral

Peritoneum

Pleural Cavity Pericardial Cavity Peritoneal Cavity

Parietal Pleura Parietal

Pericardium

Parietal Peritoneum

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Example: Thoracic Membranes

Visceral Pericardium

Parietal Pericardium

Visceral Pleura

Parietal Pleura

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Abdominopelvic Quadrants

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Abdominopelvic Regions

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Other Body Cavities

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