The narrowing of blood vessels, reducing blood flow through them.

A material that transfers energy by conduction very slowly or not at all.

The process of emitting energy, often in the form of infrared waves, from an object.

The widening of blood vessels, increasing blood flow through them.

The role of the skin in thermoregulation

Biology

Effect of osmosis and sugar concentration on the mass of plant tissue: practical

Effect of osmosis and sugar concentration on the mass of plant tissue: analysis

The importance of maintaining constant conditions in the body

The importance of maintaining constant conditions in the body, including osmosis

Controlling water balance: the kidneys, and treating kidney failure

Pupils will learn about factors that affect the rate of photosynthesis in plants, including temperature, light intensity and carbon dioxide concentration.

Pupils learned how substances essential for chemical reactions, and the products of the reactions, are transported into, around and out of plants, and about factors affecting the rate of water uptake by a plant.

This unit covers the importance of maintaining a constant internal environment, focusing on body temperature control, osmotic balance, and kidney function. It explains the roles of the skin, kidneys, and ADH, and emphasises data extraction, experiment techniques, and accurate data interpretation.

Coordination and control: maintaining a constant internal environment

True or false? Enzymes denature in hot and cold temperatures.

Which are the responses to an increase in body temperature?

This reduces blood flow to the surface of the skin.

This increases blood flow to the surface of the skin.

Alex: Your erector pili muscles contract which makes your hairs stand up.

Sofia: Your erector pili muscles relax which makes your hairs lie flat.

Lucas: Your erector pili muscles contract which makes your hairs lie flat.

Laura: Your erector pili muscles relax which makes your hairs stand up.

The Oak pupils are discussing what happens when the human body gets too hot. Who is correct?

{{}} is the maintenance of a constant, optimal internal environment in response to internal and external changes.

Which important part of an enzyme can become misshapen when exposed to high temperatures?

What is the optimum human body temperature?

How does the body react to a decrease in temperature?

The role of the skin in thermoregulation

Lesson outcome