Mrs. Reichmann- Chetek High School Introduction to Human Anatomy and Physiology Chapter 1 http://www.jcpe.ie/resources/webquests/TheHumanBodyLTDOct/Images/humanbody.jpg Mrs. Reichmann- Chetek High School

1.3 Levels of Organization:

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

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

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)

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

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

Parts of a Homeostatic Mechanism

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

Body Temperature Regulation

Homeostatic Mechanisms 11 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

Homeostatic Mechanisms 12 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

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

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

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

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

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

1.6 Organization of the Human Body 18 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. http://www.beltina.org/health-dictionary/pleura-definition.html

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

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

Thoracic and Abdominopelvic Membranes

1.7 Anatomical Terminology Anatomical Position

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.

Relative Positional Terms

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

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