Ch7.2 Homeostasis

The ability to maintain a stable internal environment even when the external environment changes

• Metabolism

• Homeostasis

• Positive Feedback Response

• Body Control

Match the following

• A "standard" condition

• Effector

• The "processor" (Makes decisions)

• Receptor

• Something capable of causing change

• Set Point

• Something capable of detecting changes

• Control Center

• Any thing that evokes a reaction

• Stimuli

Match the following

• Receptor

• The muscles in the lung increase contractions and you breathe faster

• Stimulus

• Cells determine oxygen levels are too low

• Effector

• Oxygen levels in the blood fall below normal

• Control Center

• The brain determines that it is necessary to increase the respiratory rate

A mechanism in which the actions of the effector help stabilize the system and bring it back towards the set point.

• Positive feedback response

• Negative feedback response

• Metabolism

• Cellular Respiration

An enzyme produced by the pancreas that helps lower blood sugar by producing glycogen.

• Cholesterol

• Lipase

• Insulin

• Glucagon

An enzyme produced by the pancreas that helps raise blood sugar by breaking down glycogen into glucose.

• Cholesterol

• Lipase

• Insulin

• Glucagon

Both Insulin and Glucagon are produced by the ...

• stomach
• kidney
• pancreas
• liver