Wellness Principles

When 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. This is an example of a:

• Positive Feedback Loop

• Negative Feedback Loop

Maintaining body temperature is an example of a:

• negative feedback loop
• positive feedback loop

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation
• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

What type of feedback loop is shown?

• negative
• neutral 
• positive

When 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. This is an example of what type of feedback?

• Positive Feedback Response

• Negative Feedback Loop

Detects change and sends a message to the control center

• receptor

• control center

• effector

• regulation

Receives the message from the receptor and coordinates a response

• control center

• effector

• glucagon

• homeostasis

responds to the output from the control center

• control center

• receptor

• thermoregulation

• effector

Which organ churns food and uses acid and enzymes to break down food?

• stomach

• esophagus

• mouth

• epiglottis

Where does the digestion of carbohydrates take place?

• Mouth

• Mouth and Stomach

• Mouth and small Intestine

• Mouth and large intestine

• Stomach