A system that regulates body conditions; glands           secrete hormones into the blood that target specific organs.

A chemical substance produced by a gland that travels in the bloodstream to a specific organ.

An organ or tissues that produces and secretes substances, such as hormones.

Specialised cells that detect changes in the environment (stimuli) and respond by stimulating electrical impulses.

The human endocrine system

Biology

Pupils will learn more about photosynthesis in producers, including a two-stage model of the process and the requirements and products of each stage.

Pupils learned how the components of the human nervous system enable us to respond quickly to changes outside and inside our bodies.

Match each letter to the endocrine gland it is labelling. 

A {{}} is a chemical messenger that is secreted by glands into the bloodstream to target certain organs. 

Receptor cells detect a change in the environment (stimuli).

Electrical impulses are sent to the brain.

The brain sends electrical impulses to specific glands.

Glands are triggered to secrete hormones.

Put these stages in order to show how the endocrine system brings about a change in the body. 

The pituitary gland is known as the master gland.

Hormones can act on any gland in the body.

Which statements are true for the endocrine system?

It involves hormones being secreted by glands.

It only involves neurones transmitting electrical impulses.

It is quick to act with a short response time.

It is slower to act with a longer lasting response.

Which statements are true about the endocrine system?

Which of the following changes in the body can be triggered by changes in hormone levels?

Which part of the blood transports dissolved substances?

made up of the brain, spinal cord and nerves

made up of glands and organs that secrete hormones

Match the systems to their correct description. 

Which of the following is a female reproductive organ?

Which hormone is involved in the fight or flight response and is triggered in stressful situations?

The changes that happen during puberty are because of chemical messengers called hormones. Which glands release the sex hormones?

What is the name of the sugar that is transported in the blood plasma and delivered to cells as a reactant for respiration?