Module 1 - Physiology Flashcards
1
Q
definition of physiology
A
- Study of function
- How organisms control internal body environment regardless of external environment
- Physical & chemical factors responsible for normal function
2
Q
definition of homeostasis
A
- Maintain stable internal conditions regardless of external conditions
- Body maintains through positive & negative feedback systems
3
Q
function of negative feedback system & components
A
- Reverse initial change to keep a variable at homeostasis
- Includes set point, control centre, effector, controlled variable, sensor
4
Q
nervous system components
A
- brain, spinal cord & nerves (rapid communication of neurons & nerves)
5
Q
endocrine system function
A
- release & distribution of hormones in blood (slower response)
6
Q
definition of organism
A
- organ systems grouped together
7
Q
definition of tissue
A
- group of cells with same specialization
8
Q
level of organization in human body
A
- All systems use negative/positive feedback to maintain homeostasis
9
Q
definition of set point in negative feedback system
A
- set value body wants to maintain (integrated into control centre)
10
Q
purpose of sensor in negative feedback system
A
- monitors controlled variable & signals to control centre
11
Q
purpose of control centre in negative feedback system
A
- compares value from sensor & set point (activates effector)
12
Q
purpose of effector in negative feedback system
A
- organs & systems that change controlled variable
13
Q
purpose of controlled variable in negative feedback system
A
- variable body wants to maintain (current value)
