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Gr8 Vocabulary Quiz #8

Last updated about 1 year ago
3 questions
Note from the author:
1. Ensure all tabs on your Chromebook are closed before beginning your vocabulary quiz.
2. You will be given 10 minutes to complete your vocabulary quiz.
3. Please read all questions carefully and make sure to check your work before submitting.
1. Ensure all tabs on your Chromebook are closed before beginning your vocabulary quiz.
2. You will be given 10 minutes to complete your vocabulary quiz.
3. Please read all questions carefully and make sure to check your work before submitting.
Required
1

What is the purpose of a feedback mechanism? (Check all that apply)

Required
1

True or False: A stimulus is a signal to which an organism does not respond to.

Disease as a Homeostatic Imbalance
Disease is any failure of normal physiological function that leads to negative symptoms. While disease is often a result of infection or injury, most diseases involve the disruption of normal homeostasis. Anything that prevents positive or negative feedback system from working correctly could lead to disease if the mechanisms of disruption become strong enough.

Aging is a general example of disease as a result of homeostatic imbalance. As an organism ages, weakening of feedback loops gradually results in an unstable internal environment. This lack of homeostasis increases the risk for illness and is responsible for the physical changes associated with aging. Heart failure is the result of negative feedback mechanisms that become overwhelmed, allowing destructive positive feedback mechanisms to compensate for the failed feedback mechanisms. This leads to high blood pressure and enlargement of the heart, which eventually becomes too stiff to pump blood effectively, resulting in heart failure. Severe heart failure can be fatal.

Diabetes, a metabolic disorder caused by excess blood glucose levels, is a key example of disease caused by failed homeostasis. People with type 1 diabetes do not produce insulin due to auto-immune destruction of the insulin producing cells, while people with type 2 diabetes have chronic high blood glucose levels that cause insulin resistance to develop.
Explain what makes this statement true: “diabetes is a disease caused by failed homeostasis”.
Required
8

Explain what makes this statement true: “diabetes is a disease caused by failed homeostasis”.
Your complete response should include the following:
  1. Define homeostasis
  2. Describe the role of insulin and glucagon
  3. Explain the connection of two body systems
  4. Explain what makes diabetes an example of failed homeostasis