Homeostasis Lab Quiz Flashcards
What elements make up 96% of animals?
C, H, O, N
What are the 4 basic components of molecular life?
carbs
lipids
proteins
nucleic acids
What is tissue composed of?
cells grouped by structure and work together to perform a function
What are the types of tissue?
muscular, nervous, epithelial, & connective
What is an organ?
self-contained collection of tissues that work together to perform a specific function
What is homeostasis?
Maintaining internal stability due to coordinated responses of parts of the body to any situation or stimulus that would disrupt normal conditions or functions
What are the 3 key parts of homeostasis?
1) dynamic “steady-state” of internal environment
2) stable “maintenance of optimal conditions” our cells need to live
3) “Normal set-point” for physiological parameters
What are some parameters of homeostasis?
Nutrients
Hormones
Temperature
pH
What needs to be maintained through homeostasis?
Nutrient concentrations O2 and CO2 Waste products pH H20, salt/electrolytes Fluid volume & pressure
Negative feedback loop
Response to stimulus reduces original stimulus or causes opposite effect
Positive feedback loop
response to stimulus increases original stimulus
Feedforward
Anticipation-action before the stimulus has occurred
Prefix
Beginning of word/ modifies meaning
Suffix
end of word/ modifies meaning
root
foundation/ main anatomy word
