9.1

Question 1

Maintaining Internal Balance

Answer 1

• all organisms have to stay within a tolerable range
• changing in external environment can affect change in internal environment
• its survival abilities is dependant on their ability to maintain their internal env.

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Question 2

Homeostasis

Answer 2

Physiological sate where internal and external envr are kept within a tolerable range

It is NOT a steady state, and is a dynamic process that is continuely adjusted in response to changes in internal env.

Question 3

The Internal Environment

Answer 3

• Refers to extracellular fluid
• Includes intestinal fluid, ( fluid between cells, tissue, and plasma)
• Volume, temp, chemical composition change cange
• neg changes

Question 4

Organs involved in homeostasis

Answer 4

• Excretory system
  (waste, liquid)
• circulatory system
  (deliver hormones, chems throughout body)
• nervous system
  ( works with E.S, recieves sensory info from environment)
• endocrine system
  (secrete hormones)
• intergumery system
  (Maintain body temp)
• Immune system

Question 5

Tasks nessesary for survival

Answer 5

• taking in nutritns
• Protection
• reproduction
• Disposing wastes products
• synthesizing proteins, fats, or carbs