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- 1. Multiple Choice
What is an example of a positive feedback mechanism?
- 2. Multiple ChoiceThe two types of feedback systems that help organisms maintain homeostasis are:positive and negativereceptor and effectorstatic and dynamicminor and major
- 3. Multiple ChoiceMaintaining body temperature is an example of a:negative feedback looppositive feedback loop
- 4. Multiple ChoiceThe term for maintaining internal temperature is:ThermoregulationThermometerHomeothermalHomeostasis
- 5. Multiple ChoiceRapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.Positive Feedback ResponseNegative Feedback Loop
- 6. Multiple ChoiceIf the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up.Positive Feedback ResponseNegative Feedback Loop
- 7. Multiple ChoiceWhen glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.Positive Feedback ResponseNegative Feedback Loop
- 8. Multiple ChoiceHomeostasisallows for a wildly fluctuating internal environmentis impossible in vertebratesis the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulationis the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
- 9. Multiple ChoiceWhen you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.Positive Feedback ResponseNegative Feedback Loop
- 10. Multiple ChoiceWhich system sends electrical messages that helps control the body's responses to internal and external changes?nervousendocrinereproductiveintegumentary
- 11. Multiple Choice
What hormone is produced in the pancreas that lowers blood sugar?
Insulin
Glucagon
Ketones
Glucose
- 12. Multiple ChoiceThese two body systems regulate feedback mechanisms.Skeletal & MuscularSkeletal & EndocrineMuscular & NervousEndocrine & Nervous
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