Chapter 1 Flashcards
Hydrostatic pressure
Pressure liquid exerts
Requirements of Organisms
Water, food, oxygen, heat, pressure
Atmospheric pressure
Force acting on the outside of a land organism due to the weight of air above it
Homeostasis requires most of our _____ energy
Metabolic
Homeostatic mechanisms
1. 2. 3. 4. 5.
Stimulus Receptors Control center Effectors Response
Most body systems have ___ feedback
Negative
Negative feedback
Response is in opposite direction of stimulus
“More gives less”
Examples of positive feedback
Nursing
Giving birth
Positive feedback
Stimulus makes you produce more
“More gives you more”
Serous membrane
Secretes fluid
Parietal membrane
Lines cavity
Visceral membrane
Lines organ
Viscera
Organs in thoracic and and abdominopelivc cavities
Ribs to pelvis
Thoracic cavity is separated by ____
Diaphragm
Region between lungs ___
Mediastinum