Lecture 1

Question 1

What is homeostasis?

Answer 1

Maintenance of internal environment

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Question 2

What happens to cells when environmental conditions are not met?

Answer 2

Death, disease

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Question 3

What are the different types of conditions meant to be kept to maintain favorable conditions?

Answer 3

Temp, pH, CO2, O2, blood pressure, ion concentration, waste levels

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Question 4

What two systems work together to achieve homeostasis?

Answer 4

Nervous system and endocrine

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Question 5

What are the special events where homeostasis can be off course?

Answer 5

Pregnancy, blood clot, growth, response to danger

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Question 6

What is the anticipatory response?

Answer 6

Responses that may occur in anticipation of a change aka a proactive response to the future

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Question 7

What is subconscious vs. conscious anticipatory responses?

Answer 7

Proactive change in blood gas levels before exercises like HR and respiratory changes before a sprint / learned behavior that occurs in response to a change like wearing shorts when weather is hot to anticipate change in body temp

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Question 8

What is a feedback mechanism?

Answer 8

Respond to changes in the system detected by receptors to tell CNS for appropriate response

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Question 9

What is a negative feedback?

Answer 9

An opposite response reaction to that which triggered the response ex. Increased body temp -> hypothalamus says to CNS to sweat -> increase blood flow to skin -> heat escapes and sweat

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Question 10

What is positive feedback?

Answer 10

Is NOT. A homeostatic mechanism. Increases response out rather than decreasing it. Ex contractions

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