Unit 4: Homeostasis

Looking at the image, state if this a positive or negative feedback system. Explain your choice.

Using the image (upper loop-temperature drops), identify the stimulus, sensor, effector and response.

Draw a graph that shows how blood glucose levels change over time, during and after a meal.

How does insulin help control high blood sugar levels in the body? (i.e. maintain homeostasis)

Fill in the blanks. Glucagon raises the blood (glucose/glycogen) _______ levels, by stimulating________(glycogen/insulin) degradation.

What organ produces insulin and glucagon?

Explain in your own words, what a positive feedback system is.

Diabetes is a disease characterized by ______ (low/high)blood glucose levels, which is caused by problems with _______ (insulin/glucagon)production.

A person with type II diabetes, can control their blood glucose levels through diet. What type of diet is recommended for patients with type II diabetes?

Looking at the image, how is this boy trying to maintain homeostasis?