Download Maintaining Balance in Organisms

Keys to Maintaining Balance
in Organisms by Interaction
Regulating Internal Conditions
External Force
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Exercise
Fright
Danger
Threat
Temperature
Environment
Extended Learning
• What other systems might be involved in
temperature regulation?
• Maintaining Homeostasis involves the
interaction of many systems.
• How does change in one system affect
another?
• Are these Automatic or Behavioral?
Key Body Systems
• Circulatory System
– Provides path to internal systems of the body
• Respiratory System
– Provides for gas exchange CO2 for O2
• Nervous System
– Controls and coordinates body’s responses
• Endocrine System
– Secretes Hormones into the blood system for stress recovery.
Needed
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• Urinary System
– Removes wastes produced from work
Nervous System Keys
• Sense
– Stress applied by external force (ie exercise)
• Respond
– Controls and Coordinates the body’s
response
– Integrates the activities of the organ systems
Circulatory System Keys
• Sense
– Monitor Stimuli (ie cold)
– Message to Brain
• Respond (involuntary or automatic)
– Change in Blood Flow
– Vessels Constrict
– Major organs protected
– Extremities sacrificed
Endocrine System Keys
• Sense
– Needed Hormones for stress reduction
• Respond (automatic)
– Glands manufacture and secrete hormone
into the bloodstream
Respiratory/Urinary System Keys
• Exchange of Gases between the air and
the circulating blood
• Exchange of cell wastes (toxins) between
the blood and external environment
Behavioral Keys
• Sense
– External Force
• Respond
– Various (view video)