1. Aim: How can we identify and describe the human body cavities?
DO NOW:

2. A. Body Cavities Two essential functions:
Protect organs from accidental shocks
Permit changes in size and shape of internal organs
Ventral body ( Front/anterior cavity)
Divided by the diaphragm:
Thoracic cavity
Abdominopelvic cavity

3. B. Viscera Organs of the thoracic and abdominal pelvic cavities
Serous membrane is a thin slippery membrane that covers the viscera
Parts of the serous membrane:
Visceral layer
Covers the viscera within the cavities
Parietal layer
Lines the wall of the cavities

5. C. Serous membrane of the thoracic cavity
Pleura-Refers to the lungs
Serous membrane of the pleural cavities
Visceral pleura clings to surface of lungs
Parietal pleura lines the chest wall
Pericardium- Refers to the heart
Serous membrane of the pericardial cavity
Visceral pericardium covers the heart
Parietal pericardium lines the wall of
the pericardial cavity.

6. D. The Thoracic Cavity Right and left pleural cavities Mediastinum
Separated into regions
Right and left pleural cavities
contain right and left lungs
Mediastinum
upper portion filled with blood vessels, trachea, esophagus, and thymus
lower portion contains pericardial cavity
the heart is located within the pericardial cavity

7. Body Cavities
FIGURE 1–11 The Ventral Body Cavity and Its Subdivisions.

8. Labeling Exercise

9. E The Abdominopelvic Cavity
1. Peritoneal cavity — chamber within abdominopelvic cavity
Parietal peritoneum lines the internal body wall
Visceral peritoneum covers the organs

10. Abdominal cavity — superior portion
Diaphragm to top of pelvic bones
Contains digestive organs
Retroperitoneal space
Area posterior to peritoneum and anterior to muscular body wall
Contains pancreas, kidneys, ureters, and parts of the digestive tract

11. Pelvic cavity — inferior portion
Within pelvic bones
Contains reproductive organs, rectum, and bladder

12. Body Cavities
FIGURE 1–10 Relationships Among the Subdivisions of the Ventral Body Cavity. 12

13. F. Dorsal Body Cavity- Posterior
Cranial cavity
Protects the brain
Vertebral canal
Formed by bones of vertebral column
Contains the spinal cord
Meninges
Layers of protective tissue that line the cranial cavity and the vertebral canal.

14. Other Cavities Oral (mouth) cavity Tongue and teeth Nasal cavity nose
Orbital cavities
eyeball
Middle ear cavities
Small bones of the middle ear
Synovial cavities
Joints

15. SUMMARY
Create a Concept Map that illustrates today’s topic.