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1 of 33© Boardworks Ltd 2008
2 of 33© Boardworks Ltd 2008 What is behaviour
3 of 33© Boardworks Ltd 2008 What is behaviour? Behaviour is the way in which a person acts in response to a stimulus or situation. These responses can aid survival. Some human behaviour is much more complex. For example, if you hear a loud noise you put your hands over your ears. This prevents the noise from damaging your ears. The stimulus is the loud noise. Your response is to cover your ears.
4 of 33© Boardworks Ltd 2008 What do we respond to? Humans respond to both internal and external stimuli. An internal stimulus is a change inside the body. For example, the feeling of hunger. An external stimulus is a change in the environment around us. For example, the heat of an oven.
5 of 33© Boardworks Ltd 2008 Internal or external?
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7 of 33© Boardworks Ltd 2008 Nervous system The nervous system can coordinate a response to a stimulus, using nerve cells. Nerve cells, or neurones are specialized cells that transmit electrical impulses around the body. nucleus cell body
8 of 33© Boardworks Ltd 2008 If a stimulus is detected your nervous system sends an impulse along neurones to and from different parts of the body, to coordinate a response. 1.Specific receptors in a sense organ detect a stimulus. 2. An electrical impulse is sent to the brain. 3. The brain processes the information. 4. An electrical impulse is sent to an effector (e.g. a muscle or gland). 5. The effector produces a response. How are responses coordinated?
9 of 33© Boardworks Ltd 2008 The senses
10 of 33© Boardworks Ltd 2008 Parts of the nervous system
11 of 33© Boardworks Ltd 2008 What is a reflex? Reflex reactions happen without you having to think about them – they are involuntary. This is because the central nervous system sends electrical signals to the muscles before the brain can pick up the message. Reflexes can stop you from getting hurt. For example if you touch a hot surface, your body automatically moves your hand away from the heat, preventing you from being burnt.
12 of 33© Boardworks Ltd 2008 Knee-jerk reaction
13 of 33© Boardworks Ltd 2008 Reflex arc
14 of 33© Boardworks Ltd 2008 The brain and drugs
15 of 33© Boardworks Ltd 2008 Types of behaviour
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17 of 33© Boardworks Ltd 2008 The hormonal system Hormones are produced by glands. These chemicals are released into the blood where they are carried around the body. A response is produced when the hormone reaches its target organ. The hormonal system also coordinate some of the body’s responses, using hormones. Hormones control growth and reproduction processes. Hormonal responses are slower and longer lasting than those coordinated by the nervous system. gland hormone
18 of 33© Boardworks Ltd 2008 Hormone glands
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20 of 33© Boardworks Ltd 2008 Do humans have innate behaviour? The fight or flight response is thought to be a human innate behaviour. When humans are threatened or stressed this can cause a chemical change in the body. This causes a person to react or retreat. This behaviour can help us to survive in dangerous situations. Humans have some innate or instinctive behaviour. This is pre-programmed behaviour, which is not learnt.
21 of 33© Boardworks Ltd 2008 Fight or flight
22 of 33© Boardworks Ltd 2008 Learned behaviour Learned behaviour is behaviour developed through experience. Experience allows us to improve or change our existing responses and develop behaviour to new situations. For example, from an early age babies will react to the positive responses of their parents. If a baby displays behaviour that its parents respond to, the baby will soon learn to continue the same behaviour. Learning can help humans acquire new skills for survival.
23 of 33© Boardworks Ltd 2008 Learned behaviour Animals, including humans, can learn to ignore a stimulus if it is harmless. There are so many stimuli in the environment around us that we can learn not to respond to those that are unimportant. For example, if you live near a noisy road or airport you soon stop noticing the noise. However, other people might find these noises loud and annoying.
24 of 33© Boardworks Ltd 2008 Complex behaviour The brain is the site of your consciousness. It is the site of your thoughts, emotions, ideas, instincts and memories. If the brain is damaged it can cause a change in behaviour. cerebellum brainstem cerebral hemisphere spinal cord
25 of 33© Boardworks Ltd 2008 The brain Flash from GCSE core Simplified
26 of 33© Boardworks Ltd 2008 How does behaviour help us to survive? Complex behaviour, such as speech, emotion and memory, can help us to communicate and cooperate with each other. Humans work together in many aspects of life, helping us to survive and reproduce. This is called cooperative behaviour. Can you think of an example of cooperative behaviour in humans?
27 of 33© Boardworks Ltd 2008 Cooperative behaviour This cooperative behaviour involves parents working together to protect, feed and teach their children. Do you think this type of behaviour is innate or learned? There are lots of different examples of cooperative behaviour, as humans are very social animals. Most humans choose to live together in small family groups or units.
28 of 33© Boardworks Ltd 2008 What determines behaviour? Others believe that people do and think certain things because they learn to do them – they are taught by others. This is called the nurture theory of behaviour. Some scientists think that people behave in the way they do because of instincts or innate behaviour that we are born with. This is called the nature theory of behaviour. In reality most behaviour is likely to be a mix of both nature and nurture. Humans are influenced by both genes and the environment.
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30 of 33© Boardworks Ltd 2008 Nervous or hormonal?
31 of 33© Boardworks Ltd 2008 Glossary
32 of 33© Boardworks Ltd 2008 Anagrams
33 of 33© Boardworks Ltd 2008 Multiple-choice quiz
1 of 9© Boardworks Ltd of 9© Boardworks Ltd 2015 What is behaviour? Behaviour is the way in which a person acts in response to a stimulus or situation.
1 of 14© Boardworks Ltd 2011 Nerves and Reflexes.
Tri-teach The nervous system. Responding to change Our bodies have 2 ways of responding to change: The nervous system for fast, short term responses.
Nervous System. Learning Outcomes Understand the role of the Nervous System Understand what Stimuli, Receptors and Effectors are Understand what the role.
1 of 6© Boardworks Ltd of 6© Boardworks Ltd 2015 Nervous system The nervous system can coordinate a response to a stimulus, using nerve cells.
The Nervous System Coach Book: Pgs The Main Idea: Your body carries out many complex activities to keep you alive and healthy. These activities.
The Nervous System Control and coordinate the body parts and processes. It receives sensory stimuli from internal and external environments. It responds.
1 of 23© Boardworks Ltd 2011 The Brain and Learning.
HUMAN RESPONSES TO THE ENVIRONMENT Two systems to be studied: 1.Nervous system 2.Endocrine system.
Nervous System Controls and coordinates your body's activities and helps you sense and respond to changes in your environment.
The Nervous System. What is regulation? The control and coordination of all bodily activities.
Lab Clean-up Any missing labs can be made up for Regents credit but will be a 0 grade All labs with a star on them or any labs under a 65 must be made.
Nervous System. Structures Brain, spinal cord, peripheral nerves Function Recognizes and coordinates the body’s response to changes in its internal.
Human Responses Nervous system Endocrine System (hormones)
How and why do organisms respond to changes in their environment? Can you list what is required for a coordinated response? What makes up the CNS? Can.
The Nervous System Miss Charney Northville Central School Miss Charney Northville Central School.
Receives information about environment and what happens inside your body Directs how body responds to information Maintains homeostasis.
Learning Outcome Describe the structure of the brain, including cerebrum, cerebellum, medulla and hypothalamus. Describe the functions of the different.
Chapter 24 Regulation. Why do you respond to changes around you? Your responses are controlled by your nervous and endocrine system. Together these 2.
Regents Biology The Nervous System: Overview The Nervous System controls and coordinates all the functions of the body. The Nervous System.
THE NERVOUS SYSTEM Schaefer Hedgepeth. Divisions of the Nervous System Central Nervous System Peripheral Nervous System Somatic Nervous System Autonomic.
Coordination and Response in Plants and Animals Receptors, Effectors and the Central Nervous System.
Regulation and the Nervous System. What is “REGULATION”? To maintain a stable internal environment in a changing external environment; to keep the body.
9 weeks Test Jeopardy Test Review Game. ABCDE
Stimuli and Response-Notes Your body reacts to your environment because of your NERVOUS SYSTEM.
Nerves. objectives nerves help us react to our surroundings and control our behaviour. key parts of the nervous system include senses, neurones, brain,
The nervous system is important because it is the system that coordinates every animals voluntary movements, such as walking and eating, and in voluntary.
Unit Three Nervous System Lisa Michelek. Regulation Regulation is the life process by which cells and organisms respond to changes in and around them.
Chapter 15 Nervous & Chemical Control (sec. 1 & 2)
Question What is behaviour? B6 – Brain and Mind Q1 Answer: Behaviour is a response to a change in an organisms environment. Question What is a stimulus?
The Nervous System. Function : The Nervous System is responsible for controlling all the functions and movements in the body and allows you to respond.
NERVOUS SYSTEM Its function is to control and co-ordinate the parts of the body.
Vitamins Organic molecules. Minerals Inorganic Trace minerals needed in very small amounts.
The Nervous System 35-2 & What do YOU see here?
The Nervous System. What does it do? Is the communication and control system of the body. Receives information. Responds to information. stimulus response.
B1- Understanding organisms. LO – Describe the parts of the nervous system. Explain how reflex actions work and why they are important.
National 5 Biology Course Notes Unit 2 : Multicellular Organisms Part 3 : Control and communication.
Aim: How is the nervous system adapted to send messages?
The Nervous System 1.Control center for all body activities 2.Responds and adapts to changes that occur both inside and outside the body (Ex: pain, temperature,
Nervous System. Parts of the Nervous System Brain Spinal Cord Nerves.
Title: Sensitivity and responding to stimuli 13 th February 2014 Learning question: How do animals detect stimuli? L.O 2.19 – 2.23 Homework: Past paper.
Main Function: This system controls functions throughout the body and responds to internal and external stimuli. Our nervous system allows us to feel.
What life function does the nervous system help to carry out?
The Nervous System Nervous Regulation – Allows you to respond to changes (STIMULI) in the environment (MAINTAIN HOMEOSTASIS)
Divisions of the Nervous System Can you think of any parts of the Nervous System?
The Function of the Nervous System A. Receives information B. Transmits the information C. Sorts and interprets the incoming information D. Determines.
Bell ringer Where can you find a sensory neuron? Interneuron? Motor neuron?
1. THE NERVOUS SYSTEM 2. THE NEURON 3. THE PERIPHERAL NERVOUS SYSTEM 4. THE CENTRAL NERVOUS SYSTEM.
B6. Stimulus Your environment around you is constantly changing A change in the environment is called s stimulus You need to be able to respond to a stimulus.
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