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What happens during vasodilation?
The blood vessels supplying the skin dilate (widen). This helps to transfer energy to the environment.
Name responses that increase body temperature.
Hairs stand up, no sweat, shivering and blood vessels constrict(vasoconstriction)
What happens during vasoconstriction?
The blood vessels supplying the skin constrict to close off the skins blood supply.
What is the body's core temp?
37 degrees Celsius
What are hormones?
Chemical messengers that travel in the blood to target organs.
Compare and Contrast the endocrine (hormone) system and the nervous system.
Nervous is faster acting than the endocrine system.Hormones have longer lasting effects compared to electrical impulses. Nerves act on a very specific...
What does the thyroid gland do?
Produces thyroxine which is involved in regulating metabolism.
What do the adrenal glands do?
Produce adrenaline which is used to prepare the body for fight or flight.
What is the role of the pancreas?
Produces glucagon and insulin which are involved in regulating glucose levels in the blood.
Name the hormone that is released if blood sugar is too high.
Insulin
What does insulin do?
It makes the liver convert glucose into glycogen. This causes blood glucose levels to decrease.
Name the hormone that is released if blood sugar is too low.
Glucagon
What does glucagon do? HINT GLU-COSE-GONE
It makes the liver convert glycogen to glucose. This causes the blood glucose level to increase.
What is type I diabetes?
When the pancreas produces little or no insulin.
What is type II diabetes?
When a person becomes resistant to their own insulin. Being overweight can increase your chances of type II diabetes.
How can type I diabetes be treated?
Insulin injections, limiting intake of foods rich is simple carbohydrates e.g. sugars and regular exercise.
