Physiology ✔️Ans - The study of normal functioning of a living
organism and its component parts
Pathophysiology ✔️Ans - The study of the body's failure to maintain
homeostasis
Levels of organization in the biosphere ✔️Ans - atoms
molecules
cells
tissues
organs
organ systems
organisms
populations of one species
ecosystem of different species
10 organ systems of the body ✔️Ans - 1. circulatory
2. digestive
3. endocrine
4. immune
5. integumentary
6. musculoskeletal
7. nervous
8. reproductive
9. respiratory
10. urinary
Circulatory system functions ✔️Ans - transport materials between cells
of the bosy
Digestive system functions ✔️Ans - conversion of food into particles
that can be transported into the body; elimination of some wastes
Endocrine system functions ✔️Ans - coordination of body function
through synthesis and release of regulatory molecules
, Immune system functions ✔️Ans - defense against foreign invaders
Integumentary system functions ✔️Ans - Protection from external
environment
Musculoskeletal system functions ✔️Ans - support and movement
Nervous system functions ✔️Ans - Coordination of body function
through electrical signals and release of regulatory molecules
Reproductive system functions ✔️Ans - perpetuation of the species
Respiratory system functions ✔️Ans - exchange of carbon dioxide and
oxygen between internal and external environments
Urinary system functions ✔️Ans - maintenance of water and solutes in
the internal environment; waste removal
Homeostasis ✔️Ans - maintenance of a relatively stable internal
environment
Examples of variables maintained through homeostasis ✔️Ans -
temperature, pH, ion concentrations, blood pressure
Four major themes in physiology ✔️Ans - 1. structure and function are
closely related
2. living organisms need energy
3. information flow coordinates body function
4. homeostasis maintains internal stability
Physiological response loop ✔️Ans - stimulus > sensor > input signal >
integrating center > output signal > target > response
Circadian rhythm ✔️Ans - daily fluctuations of body functions such as
blood pressure, temperature, and metabolic processes
Negative feedback ✔️Ans - feedback signal turns response loop off and
maintains homeostasis.
ex) sweating, blood sugar regulation
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