Topic 4: Investigation_Balancing Act

Front

What is thermoregulation?

Back

The ability of an organism to maintain its body temperature within a certain range despite external temperature changes.

Front

What is the role of sweating in thermoregulation?

Back

Sweating helps cool the body down by evaporating moisture from the skin, which dissipates heat.

Front

What is vasodilation?

Back

The widening of blood vessels, which increases blood flow to the skin and helps release heat.

Front

What is vasoconstriction?

Back

The narrowing of blood vessels, which reduces blood flow to the skin and helps retain heat.

Front

What is a feedback mechanism?

Back

A process that uses the conditions of a system to regulate its function, often to maintain a set point.

Front

What is the normal blood glucose level in humans?

Back

90 mg/100 mL.

Front

Which two body systems work closely together to maintain blood glucose levels?

Back

The Circulatory and Endocrine systems.

Front

What is the main purpose of blood glucose regulation?

Back

To maintain a stable internal environment (homeostasis) by keeping blood glucose levels within a normal range.

Front

What happens when blood glucose levels rise?

Back

The pancreas releases insulin, which helps cells absorb glucose and lowers blood sugar levels.

Front

What happens when blood glucose levels drop?

Back

The pancreas releases glucagon, which signals the liver to release stored glucose into the bloodstream.