Body Cavities and Membranes

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Body Cavities and Membranes
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Body Cavities

• 2 main cavities
• Ventral Cavity
• Dorsal Cavity

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The Ventral Cavity

• Thoracic Cavity
• Pleural Cavity
• Containing the right and left lungs
• Pericardial Cavity
• Containing the heart

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Ventral Cavity

• Abdominal Cavity
• Contains digestive organs

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Dorsal Cavity

• Cranial Cavity
• Containing the Brain
• Vertebral Canal
• Containing the Spinal Cord

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Where is Susies Thoracic Cavity?
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Where is Susies Pleural Cavity?
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Where is Susies Abdominal Cavity?
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What are membranes??

• Thin lining or covering of organs

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Types of Membranes

• Mucous Membranes
• Lines the tubes of digestive, respiratory,
  urinary, and reproductive systems
• Secrete mucous for protection

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Types of Membranes

• Serous membranes
• Line thoracic and abdominal cavities
• Secrete watery fluid to keep organs lubricated
• Provides support and compartmentalizes organs

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Types of Membranes

• Synovial membranes
• Line freely movable joint cavities
• Secrete fluid to lubricate ends of bones

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Types of Membranes

• Meninges
• Protective covering for brain and spinal cord