1. Mrs. Reichmann- Chetek High School
Introduction to Human Anatomy
and Physiology
Chapter 1
Mrs. Reichmann- Chetek High School

2. 1.3 Levels of Organization:

3. 1.3 Levels of Organization:
The human body is the sum of its parts and these parts can be studied at a variety of levels of organization.
Atoms
Two or more atoms comprise a
Macromolecules
Organelles

4. 1.3 Levels of Organization Continued:
Cells
Tissues
Groups of tissues form
Groups of organs function together as
Organ systems functioning together make up an

5. 1.4 Characteristics of Life
Fundamental characteristics of life are traits shared by all organisms.
Movement
Responsiveness
Growth
Reproduction
Respiration
Table 1.1 (p.5)

6. 1.4 Characteristics of Life Continued
Digestion
Absorption
Circulation
Assimilation
Excretion
Taken together, these 10 characteristics
constitute

7. 1.5 Maintenance of Life
Maintenance of a stable internal environment is called
Homeostasis is regulated through
Examples include:
Homeostatic mechanisms regulate
Another homeostatic mechanism employs

8. Parts of a Homeostatic Mechanism

9. 1.5 Maintenance of Life continued
Many of the body's homeostatic controls are
Each individual uses homeostatic mechanisms to keep body levels within a

10. Body Temperature Regulation

11. Homeostatic Mechanisms11
Negative feedback summary:
Prevents sudden,
Reduces the actions of
Corrects the
Causes opposite of bodily disruption to occur,
Limits chaos in the body by
type of feedback loop

12. Homeostatic Mechanisms12
Positive feedback summary:
Increases (accelerates) the actions of the body,
Produces more
There are only a few types necessary
Positive feedback mechanisms are
Controls only infrequent events that
Considered to be the

13. 1.6 Organization of the Human Body
Major features of the human body include its cavities, membranes, and organ systems.

14. 1.6 Organization of the Human Body
Body Cavities
Appendicular portion
Axial portion
Organs within these cavities are called

15. 1.6 Organization of the Human Body
The dorsal cavity can be divided into two areas:

16. 1.6 Organization of the Human Body
The ventral cavity is made up of the following:
Thoracic cavity
The mediastinum divides
Pleural cavity contains
Abdominopelvic cavity
The abdominopelvic cavity can be divided into the
A broad, thin muscle called the

17. 1.6 Organization of the Human Body
Smaller cavities within the head include the

18. 1.6 Organization of the Human Body18
Thoracic and Abdominopelvic Membranes:
The thoracic cavity is lined with ___________________
the____________________lines the cavities while the
_______________________ covers the lungs. A thin layer of serous fluid separates the two layers.

19. 1.6 Organization of the Human Body19
The heart is surrounded by _________________ The _________________makes up an outer sac and the
____________________covers the heart. Serous fluid separates the two layers.

20. 1.6 Organization of the Human Body20
____________________line the _____________________; a _________________ peritoneum lines the wall while _______________ peritoneum covers the organs.

21. Thoracic and Abdominopelvic Membranes

22. 1.7 Anatomical Terminology
Anatomical Position

23. 1.7 Anatomical Terminology Continued
Relative Positions:
Terms of relative position describe the location of one body part with respect to another.
Terms of relative position include:
We will goes through these on the board.

24. Relative Positional Terms

25. 1.7 Anatomical Terminology Continued
Body Sections:
A sagittal section
A transverse section
A coronal section.

26. http://training. seer. cancer

27. 1.7 Anatomical Terminology Continued
Body Regions 1. The abdominal area can be divided into