Chapter1b
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Transcript of Chapter1b
Homeostasis
Positive Feedback Mechanisms
Review:
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)
Directional Terms
• Also…– Cranial =
Superior– Caudal = Inferior– Intermediate– Superficial– Deep
Body Planes & Sections
Frontal or Coronal
Sagittal
Median or Midsagittal
Transverse orHorizontal
Organization of the Human Body
• Axial & Appendicular portion
• Body Cavities
• Membranes
Body Cavities (Lateral View)
Cranial Cavity
Vertebral Cavity
Thoracic Cavity
Diaphragm
Abdominal Cavity
Pelvic Cavity
Body Cavities (Anterior View)
CranialCavity
VertebralCavity
Pelvic
Cavity
AbdominalCavity
Diaphragm
Pleural
Pericardial Cavity
ThoracicCavity
Mediastinum
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
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
Example: Thoracic Membranes
Visceral Pericardium
Parietal Pericardium
Visceral Pleura
Parietal Pleura
Abdominopelvic Quadrants
Abdominopelvic Regions
Other Body Cavities