Lecture 1: What is Physiology Flashcards
what does physiology mean?
Is the knowledge of nature
Where does the word physiology come from
the Greek word Phusiologic
What does physiology study
the normal functioning of an organism and its parts
What 4 things makes an organism alive?
1) Made of one or more cells
2) Regulate itself (homeostasis)
3) Respond to stimuli
4) Able to replicate
Is a virus alive?
No
What levels of organization of life sciences does physiology contain?
1) Atoms
2) Molecules
3) Cells
4) Tissues
5) Organs
6) Organ systems
7) Organism
8) Population
What 3 things make physiology important?
1) Leads to treatment of diseases in humans and other organisms
2) Helps us understand how organisms cope with environmental stressors
3) Foundation of understanding
What are the 5 themes in Physiology?
1) Structure and function
2) Homeostasis and control systems
3) Need for energy
4) Evolution
5) Information flow coordinates body function
What is homeostasis?
The ability to maintain a relatively constant internal environment even when the external environment is variable
What 5 things does homeostasis control?
1) Temp
2) pH
3) Salinity
4) Oxygen, CO2
5) Nutrients
True or False; Homeostasis means equilibrium?
False
ECF and ICF stand for
Extracellular fluid and intracellular fluid
True or False; Homeostasis it eh ability to maintain a relatively constant internal environment
True
Describe the Flows of Homeostasis
1) Organisms in homeostasis
2) External or internal change
3) Internal change results in loss of homeostasis
4) Organism attempts to compensate
5) Compensation either fails and leads to disease or succeeds and = wellness
Control systems can ______ and ______ to changes
can detect and adjust to changes
