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10 Cards in this Set

  • Front
  • Back
Anatomy
Study of organisms form (Structure)
Physiology
Study of how body functions (Respiration)
Homeostasis
Maintaining stable internal environment

Both plants and animals must maintain stable fluid environments for all living cells

Maintaining stable operating conditions in the internal environment
Growth
increasing number of cells, volume of cells.

Cells differentiate, specialized cells

quantitative
Development
successive stages in the formation of specialized tissues, organs, and organ systems (qualitative)
Negative Feedback
an activity alters a condition in internal environment
STIMULUS - RECEPTOR (nerve ending)- INTEGRATOR (brain) - EFFECTOR (muscle or gland) - RESPONSE
alteration triggers a response
response reverses the altered condition (sweating)
ie. body temp regulation
Positive Feedback
Some activity alters the internal environment
The alteration triggers a response
The response intensifies the change in internal condition (ie child birth)
Cicadian Rhythm
Biological activity repeated in cycles, each about twenty-four hours long
How have land plants and land animals adapted to meet the challenges of living in a terrestrial environment. (3) Give examples of this.
1. Walling off threats: Compartmentalization - plant response to a threat or wound, swells the area and toxins are sent to the site
2. leaf-folding in lupine - during hottest part of day and strong winds
3. rhythmic leaf folding - circadian rhythm, spread during day, fold during night
What are negative and positive feedback loops? Give examples of each
STIMULUS - RECEPTOR - INTEGRATOR - EFFECTOR - RESPONSE

(Stimulus, nerve endings, brain, muscles or glands, response)
ie. temp
ie. child birth