Chapter 1 Flashcards
absorption
passage of substances in body fluids
assimilation
changing absorbed substances in chemically different forms
3 parts of homeostasis
Receptor
Control center
Effector
Define receptor
Provides info about stimuli
Define control center
Tells what particular value should be (set point)
Define effector
Response that changes conditions in internal environment
Examples of homeostasis
Body temp Hormones-hunger/leptin/grehlin Blood pressure Blood glucose pH
2 types of control mechanisms
Negative
Positive
Define negative control mechanism
Correct set point
Reduce actions of effect
Causes opposite of bodily production
Most common examples
- body temp
- blood pressure
- glucose regulation
Define positive control mechanism
Increase/acceleration actions of the body
Two examples
-child birth
-blood clotting
Short lived positive feedback
Controls only infrequent events and do not require continuous adjustments
Body planes
Sagittal/median
Transverse/horizontal
Coronal/frontal
Define anatomical position
standing up, facing forward, upper limbs at the side, palms facing forward, thumbs out