1. Do now activity #4
How many Necessary Life Functions are there? List all of them.
How many Survival Needs are there? List all of them.
Describe homeostasis.
Explain the Principle of Complementarity using an example.

2. Do now activity #4
What is the difference between positive and negative feedback?
Predict what could happen if feedback mechanisms did not monitor the Necessary Life Functions.
Predict what could happen if feedback mechanisms did not monitor the Survival Needs.

3. chapter 1-3: Body cavities
Essential Question:
Compare and contrast the anatomy and physiology of the dorsal and ventral body cavities.
chapter 1-3: Body cavities
Learning Target
Describe the body cavities and their functions.
Describe the membranes of the ventral body cavity and their functions.

4. Don’t forget to chunk your notes!

5. overview Body cavities are hollow spaces that:
Contain and protect organs
Closed to the outside

6. Don’t forget to chunk your notes!

7. Dorsal cavity
Protects the nervous system (Some anatomists do not think this a cavity)*

8. Dorsal cavity The dorsal cavity is divided into 2 subdivisions:
Cranial Cavity is within the skull and encases the brain
Vertebral Cavity runs within the vertebral column and encases the spinal cord

9. Body Cavities
ventral
Figure 1.9a

10. Don’t forget to chunk your notes!

11. Houses the internal organs. Also called the visceral organs (viscera)*
ventral cavity
Houses the internal organs. Also called the visceral organs (viscera)*

12. The ventral cavity is divided into 2 subdivisions:
Thoracic: chest
Abdominopelvic: abdominal and pelvic combined

13. Body Cavities
ventral
Figure 1.9a

14. Don’t forget to chunk your notes!

15. Ventral cavity: thoracic
The thoracic cavity is divided into:
Pleural Cavities: each houses a lung
Mediastinum : contains the pericardial cavity, and surrounds the remaining thoracic organs
Pericardial Cavity: encloses the heart

16. Don’t forget to chunk your notes!

17. ventral cavity: abdominopelvic
The abdominopelvic cavity is separated from the superior thoracic cavity by the dome-shaped diaphragm

18. ventral cavity: abdominopelvic
The abdominopelvic cavity is divided into:
Abdominal Cavity: contains the stomach, intestines, spleen, liver, and other organs
Pelvic Cavity: lies within the pelvis and contains the bladder, reproductive organs, and rectum

19. Body Cavities
thoracic
Figure 1.9b

20. Don’t forget to chunk your notes!

21. Ventral body cavity membranes
Thin membranes line the ventral cavities and cover the surface of the organs
Called serosa or serous membranes

22. Ventral body cavity membranes
Parietal serosa lines the cavity walls

23. Ventral body cavity membranes
Visceral serosa covers the organs

24. Ventral body cavity membranes
Serous fluid separates the serosae

25. Ventral Body Cavity Membranes
Figure 1.10a

26. Don’t forget to chunk your notes!

27. Mouth and cavities of the digestive organs
Other body cavities
Oral and Digestive
Mouth and cavities of the digestive organs

28. Located within and posterior to the nose
Other body cavities
Nasal
Located within and posterior to the nose

29. Other body cavities
Orbital
House the eyes

30. Contain bones (ossicles) that transmit sound vibrations
Other body cavities
Middle Ear
Contain bones (ossicles) that transmit sound vibrations

31. Other body cavities
Synovial
Joint cavities

32. Don’t forget to chunk your notes!

33. Abdominopelvic regions
Umbilical
Epigastric
Hypogastric
Right and left iliac or inguinal
Right and left lumbar
Right and left hypochondriac

34. Organs of the Abdominopelvic Regions
Figure 1.11b

35. Don’t forget to chunk your notes!

36. Abdominopelvic quadrants
Right upper
Left upper
Right lower
Left lower

37. Don’t forget to chunk your notes!