Study Set Content:
- Ability to sense and respond to environmental changes
Responsiveness
- Ability to acquire and use energy in support of these changes
Metabolism
- Includes bother internal and external environments
Responsiveness
- Can increase in size
- Size of cells, groups of cells, extracellular materials
Growth
- Changes in form and size
Changes in cell structure and function from generalized to specialized – differentiation
Development
- Formation of new cells or new organisms
- Generation of new individuals
- Tissue repair
Reproduction
Maintenance of constant internal environment despite fluctuations in the external or internal environment
Homeostasis
· Measures of body properties that may change in value
Variables
Examples of variables
- Body temperature
- Heart rate
- Blood pressure
- Blood glucose levels
- Blood cell counts
- Respiratory rate
· normal extent of increase or decrease around a set point
Normal range
· average value of a variable
Normal set point
· body temperature fluctuates around a set point
Overtime set point
· The main mechanism used homeostatic regulation
Negative feedback
- of deviation away from set point
Detection:
- reversal of deviation toward set point and normal range
Correction
Person standing erect with face and palms forward
Anatomical position
· All relational descriptions based on the anatomical position, regardless of
body orientation
above
Superior
below
Inferior
front
Anterior or ventral
