starter: complete the following past exam question: title: responding to change learning objectives...

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Starter: Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor? How do you respond to changes in your surroundin gs? Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

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Page 1: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

Starter: Complete the following past exam

question:

Title: Responding to ChangeLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

Page 2: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

• The primary goal of the nervous system is to enable you to react to your surroundings and co-ordinate your behaviour.

The Nervous SystemLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

Page 3: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

• Changes in your surroundings (stimuli) are picked up by cells known as receptors

The Nervous SystemLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

Page 4: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

• Receptor cells are clustered together in special sense organs, like your eyes or skin.

The Nervous SystemLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

Page 5: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

The Nervous SystemLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

Page 6: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

How Your Nervous System WorksLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

• Once a sensory receptor detects a stimulus, the information is sent in the form of an electrical impulse along cells known as neurons.

Page 7: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

How Your Nervous System WorksLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

• Neurons are usually arranged in bundles of round a thousand, known as a nerve.

Page 8: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

How Your Nervous System WorksLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

• The impulse travels along the nerve until it reaches the central nervous system (CNS)

Page 9: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

How Your Nervous System WorksLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

• Sensory Neurons carry nerve impulses from receptors in the body to the CNS.

• Motor Neurons carry nerve impulses from the CNS to the rest of the body

Page 10: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

How Your Nervous System WorksLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

• Impulses that travel along motor neurones cause effector organs like muscles or glands to respond.

• Muscles contract and glands secrete chemical substances.

Page 11: Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?

2. Complete: Receptor ___ CNS ___ Effector3. Explain what happens in your nervous

system when you see a piece of chocolate and eat it.

TaskLearning

ObjectivesWhy do you

need a nervous system?

What is a receptor?

How do you respond to changes in

your surroundings?

Key Words: stimuli, receptors, impulses, sense organs, CNS, neurons, nerves, secretory organs

1. Your ........ system carries fast....... impulses. Changes in the .............. are picked up by your................