ANNOUNCEMENTS
? Enrollment issues
? Commuters from Seattle and elsewhere
? Anything else?

QUESTIONS for today

1. What is the human body comprised of?
? How is the material in the body organized?

2. What are the requirements of life?
? What part of the body is involved in each requirement?

3. What are some of the internal tensions with the body parts and what factors in the environment affect the body?
? What constitutes the environment?
 

ORGANIZATION OF THE HUMAN BODY

4. Molecules are stable association of atoms
? pp. 34-41

5. Cells are organized collections of molecules
? all cells (almost) contain the same basic structures
? most cells are roundish or squarish
? cells are the smallest unit of life capable of carrying out all of the requirements of life
Q: What are the requirements of life? (our second group question)

6. Tissues contain cells of similar structure and function
? there are 4 primary tissue types (muscle, nervous, epithelial and connective)
? all 210 cell types can fit into these 4 categories
? categories are very popular in science

7. Organs are two or more tissue types organized to perform a particular function

8. Body systems (organ systems) are collections of organs that perform related functions
Q: can you name some of the 10 (or 11) body systems?

Q: Are there any other categories that you think should be included?
  LIFE, THE HUMAN BODY AND HOMEOSTASIS

1. Biological life requires the following
? produce energy
? acquire nutrients
? grow
? get rid of wastes
? defense
? reproduction
? communication
? evolution

2. Anatomy is the study of "structure"
? name of the body part
? where is it located?
? what does it do?

3. Physiology is the study of "function": how does it do what it does?
? evolution often deals with "why" questions

4. Homeostasis is the tendency of the body to maintain a relatively constant internal environment

5. The internal environment is all of the fluid inside the body, but outside the cells
? extracellular fluid = liquid portion of blood and interstitial fluid
? this fluid must be of a particular constitution
Q: what factors must be balanced?

6. The "SEVEN" homeostatic balances
? glucose levels
? oxygen levels
? temperature
? pH (acidity)
? waste levels (ammonia, carbon dioxide)
? salt and water levels
? pressure and volume

7. Q: Why do these factors need to be balanced?
? all cells prefer a particular internal environment
? homeostasis is essential for the survival of the cell
 RELATIONSHIP BETWEEN THE BODY PARTS AND THE ENVIRONMENT

1. How does the body control these factors?
? study of physiology

2. What happens if the body is unbalanced in one of the factors?
? diseases are often indicated by a disruption of one of the balance
? death occurs when the body is unable to maintain homeostasis

3. Can all cells control all of these factors?
 
 

4. How does the body perform optimally?

5. What is the distinction between the mind and the body?
? Distinction between mind and brain?

6. What are the antagonistic relationships between the body parts?

7. How is the body affected by the environment?