Detects and coordinates a response to changes in internal or external environment.

Senses a change in the environment, such as a change in light or temperature.

The change in the environment, such as a sound, touch or light.

A nerve cell which transmits electrical impulses between different parts of the body.

A muscle or gland which carries out a response.

The human nervous system

Biology

Neurones and synapses

Human reaction time: practical

The structure and function of a reflex arc

The human eye

Common defects of the human eye

The human brain

Damage and disease in the human brain, including fMRI and electrical stimulation

Pupils will learn how hormones and glands of the human endocrine system enable us to coordinate and control changes in our bodies.

Pupils learned how substances essential for chemical reactions in living cells, and the products of the reactions, are transported into, around and out of the human body, and the implications of surface area:volume ratio.

This unit explores the structure and function of the nervous system, including the CNS, reflex arcs, and the eye. It covers brain structure, common eye defects, and the challenges in treating nervous system damage. It also addresses ethical considerations.

Coordination and control: the human nervous system

What are the two main sections of the nervous sytem?

processes messages and coordinates responses

dense column of nerve cells that connects the PNS and CNS

transmits electrical impulses between different parts of the body

Match the part of the nervous system to its description.

True or false? Receptors are made of cells.

Put these in order to show the path of a message through the nervous system.

contract and relax to bring about movement

Starting with the smallest, put these levels of organisation in order.

Sam: Specialised cells are only found in animals.

Laura: Specialised cells have features that help them do their job.

Lucas: Specialised cells are only found in plants, like the root hair cell.

Jacob: Specialised cells are important and we need more of them.

to transport messages around the body quickly

The human nervous system

Lesson outcome