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The human body: Introduction to Homeostasis (Organisation of the Human…
The human body:
Introduction to Homeostasis
Discipline
Anatomy:
Science of structures
the relationships among structures
Histology
Cytology
Physiology:
Science of bodily functions;
How the body parts work and roles they play
Organisation of the Human Body
Levels of complexity
1.Chemical level
Cellular level
Tissue level
Organ level
System level
Organismal level
Vital functions
Metabolism
Responsiveness
Movement
4.Growth
Differentiation
Reproduction
Organ systems
Integumentary
Skeletal
Muscular
Nervous
Endocrine
Cardiovascular
Lymphatic and immune
Respiratory
Digestive
Reproductive
Urinary
Homeostasis:
Ability to maintain a relatively stable internal environment despite the ongoing changes in the external environment
Dynamic equilibrium
Control of homeostasis
Neuvous System
(internal & external)
objective:
an optimal homeostasis state
electrical impulses
Endocrine System
(internal)
detect
respond (to electrical impulses)
secretion of chemical messengers
hormones
stimulate & inhibit
Feedback System (loop)
cycle of events
detect
analyze
modify the parameters
evaluate
remodify
6.repeat
parameter:
stimulus
trigger a regulatory mechanism
elements
stimulus
receptor
control center
effector
response
type
negative
positive
(few)
Homeostasis Imbalance
Terms
Anatomical terms
Regions
Anatomical Planes References
Directional terms
Body cavities