Blood sugar regulation

Blood sugar regulation

by Michelle Clay

Multiple Choice

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

Multiple Choice

What is the point of a feedback loop?

• To provide the body with more energy

• To provide the body with more food

• To make sure the conditions in the body are always changing

• To make sure the conditions in the body remain stable

Multiple Choice

The "cause" for something to happen is the

• response
• receptor

• stimulus
• control center

Multiple Choice

The "effect" of a given stimulus is the...

• response
• receptor

• stimulus

• control center

Multiple Choice

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. 

• Positive Feedback Response
• Negative Feedback Loop 

1. After a meal, the small intestine absorbs glucose from digested food. Blood glucose levels rise.

2. Increased blood glucose levels stimulate beta cells in the pancreas to produce insulin.

3. Insulin triggers liver, muscle, and fat tissue cells to absorb glucose, where it is stored. As glucose is absorbed, blood glucose levels fall.

4. Once glucose levels drop below a threshold, there is no longer a sufficient stimulus for insulin release, and the beta cells stop releasing insulin.

Multiple Choice

The "cause" for blood sugar to rise is

• response - increased glucose uptake into cells

• receptor - pancreas cells detect high blood glucose

• stimulus - high blood glucose level following a meal

• control center - pancreas cells secrete insulin

Multiple Choice

What "detects" a change has occured?

• response - increased glucose uptake into cells

• receptor - pancreas cells detect high blood glucose

• stimulus - high blood glucose level following a meal

• control center - pancreas cells secrete insulin

Multiple Choice

What controls the change that has to happen to make things normal again?

• response - increased glucose uptake into cells

• receptor - pancreas cells detect high blood glucose

• stimulus - high blood glucose level following a meal

• control center - pancreas cells secrete insulin

Multiple Choice

The "effect" of a high blood glucose level

• response - increased glucose uptake into cells

• receptor - pancreas cells detect high blood glucose

• stimulus - high blood glucose level following a meal

• control center - pancreas cells secrete insulin