1. The Human Body: An Orientation

2. Organ System Overview Cardiovascular
Transports materials in body via blood pumped by heart
__________
_______ __________
___________
_________
Figure 1.2f

3. Organ System Overview Lymphatic Returns fluids to ______ ________
Disposes of _______
Involved in ___________
Figure 1.2g

4. Organ System Overview Respiratory Keeps blood supplied with _______
Removes _______ _________
Figure 1.2h

5. Organ System Overview Digestive Breaks down food
Allows for nutrient ________ into blood
Eliminates ___________ material
Figure 1.2i

6. Organ System Overview Urinary Eliminates ___________ wastes
Maintains ______ – ______ balance
Regulates water and ___________
Figure 1.2j

7. Organ System Overview
Reproductive
______________________
Figure 1.2k

8. Necessary Life Functions
Movement
Locomotion
Ex: walking or running
Movement of substances
Ex:__________________________________________________________________
Digestion
Break-down and delivery of nutrients

9. Necessary Life Functions
Metabolism – chemical reactions within the body
Production of energy
Making body structures
Differentiation – Unspecialized cells become specialized
“plain” cell becomes red blood cell or white blood cell

10. Necessary Life Functions
Reproduction
Production of future generation
Growth
Increasing of (1) cell size (2) number (3) amount of material surrounding cells

11. Homeostasis
Maintenance of a stable ___________ environment = a ________ state of _____________
Homeostasis must be maintained for _________body functioning and to _________ _______
Homeostatic imbalance – a disturbance in homeostasis resulting in __________

12. Overview of Homeostasis
Figure 1.4

13. Maintaining Homeostasis
The body communicates through neural and hormonal control systems
__________
Responds to changes in the __________ (stimuli)
Sends information to control center

14. Maintaining Homeostasis
________ ________
Determines set point
_________ information
Determines appropriate __________
__________
___________ a means for response to the stimulus

15. Feedback Mechanisms Negative feedback
Includes most homeostatic control mechanisms
Shuts off the _______ _________, or reduces its intensity
Works like a household thermostat

16. Feedback Mechanisms Positive feedback
___________ the original stimulus to push the variable farther
In the body this only occurs in ______ __________ and _________________________________