Cell Communication and Reproduction

What is the name of the process that reverses an imbalance in the body's system by decreasing the effect?

• negative feed forward

• negative feedback

• positive feedback

• positive feed forward

Which of these would your body do if its temperature dropped below optimum?

• shivering

• sweating

• blood vessel dilation

• blood vessel constriction

Which of these would your body do if its temperature was above optimum?

• goosebumps

• sweating

• blood vessel dilation

• blood vessel constriction

Which organ in the body produces the hormones insulin and glucagon?

• intestines

• liver

• pancreas

• heart

The "cause" for something to happen is the

• response
• effect
• stimulus
• homeostasis

What type of feedback is shown in the blood clotting model?

• Positive

• Negative

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment

• is the maintenance of a relatively stable external environment

Homeostasis in the human body is often maintained by a: 

• neutral feedback loop 
• solar feedback loop
• positive feedback loop
• negative feedback loop

According to the feedback loop, what does high blood sugar promote?

• Insulin Release

• Glucagon Release

• Insulin Uptake

• Glycogen Uptake

Get a cut and start bleeding --> Platelets come to site and clump together & send signals for more platelets to come --> More platelets come & release more signals

• Positive

• Negative