| what does the hypothalamus do? | measures temperature of the blood flowing through it, collects information from temperature sensors around the body, and decides if it is too hot or too cold |
| What is the normal constant body temperature? | 37 degrees celsius |
| what is vasodilation? | blood vessels near the surface of your skin allows blood to flow through them |
| what is vasoconstriction? | keeping the blood away from the surface of the skin |
| what does the hypothalamus do if you are too hot? | it sends signals to the body via the nervous system
sends a signal to your sweat glands to secrete sweat |
| state the function of insulin | tells receptors on certain cells to take in some of the glucose floating around in our blood |
| state the function of glucagon | increases blood glucose |
| How do you fix low levels of glucose? | 1. pancreas detects low concentration of glucose
2. Secretes glucagon into the blood stream
3. Liver cells break it down into glucose and release it back into the blood stream |
| How do you fix high levels of glucose? | 1. pancreas detects high concentration of glucose
2. Secretes insulin into the blood stream
3. the insulin binds to receptors on certain cells which takes in some of the glucose floating around in our blood |
| What are the two main cells that take in the glucose floating around in our blood? | Liver cells and muscle cells |
| What kind of feedback loop does insulin and glucagon demonstrate? | negative feedback loop |
