UNIT 3 The interaction function Natural Science 2. Secondary Education THE INTERACTION FUNCTION PROCESSES.

Slides:



Advertisements
Similar presentations
EXAMPLES OF SENSE ORGANS
Advertisements

Organisms and Their Environments
The Human Body II Presentation made by students of 6º.
COMMUNICATIONS Stimulus.
UNIT 3 The interaction function Natural Science 2. Secondary Education ANIMAL RESPONSES WHICH ARE NOT MOVEMENTS OR SECRETIONS.
Nerves and the brain. Nerve A nerve is a bundle of axons or neuronal fibres bound together like wires in a cable. Neurons or nerve cells are the functional.
Animal Senses How do animals sense stimuli? Sensory organs perceive stimuli (light, sounds, etc.) with a receptor cell. The receptor cell sends signals.
Senses and Perception Lab 17.
The Nervous System Noadswood Science, 2011.
What is the function of the Nervous System?. The nervous system is made of structures that control the actions and reactions of the body in response to.
Copyright Pearson Prentice Hall
Starter:  Complete the following past exam question: Title: Responding to Change Learning Objectives Why do you need a nervous system? What is a receptor?
Your Nervous System Peripheral Nervous System. Engage As a class visit IQ Test Labs at As a class visit IQ Test.
Class Notes for the Nervous System - Section 1. Two Systems Within a System Peripheral Nervous System: PNS All the parts of the nervous system, except.
Chapter 29- The Senses Accommodation Aqueous humor Astigmatism Auditory canal Basilar membrane Blind spot Chemoreceptors Choroid Cochlea Compound eye Cones.
Ch 35 Sensors AP Lecture. Sensory Receptor Cells Sensors or receptors that convert sensory stimuli into change in membrane potential. This causes an action.
Nervous Systems. THINK ABOUT IT – Imagine that you are at a favorite place. Now, think about the way you experience that place. –You gather information.
Review List three body systems that work together to create a response to a stimulus Sequence What is the correct sequence of the following in response.
Lesson Overview 28.1 Response
Unit 8 Lesson 1 What Are Organs and Body Systems? Copyright © Houghton Mifflin Harcourt Publishing Company.
HUMAN RESPONSES TO THE ENVIRONMENT Two systems to be studied: 1.Nervous system 2.Endocrine system.
Sensory receptors What are the general functions of receptors? Reception Transduction Amplification Transmission Integration.
Chapter 50.  What are the general functions of receptors?  Reception  Transduction  Amplification  Transmission  Integration.
The Senses. Sensory Receptors Sensory receptors = neurons that react directly to stimuli from the environment. – Light, sound, motion, chemicals, pressure.
The Nervous System Section 35-4: The Senses.
Animal senses: how they detect stimulus
29.1 How Organ Systems Communicate QQ 4/14/08 Draw and label a nerve cell include: cell body, dendrite, axon, schwann cell, terminal, synapse.
Receiving information from the environment to coordinate a response Pg
Your Nervous System Peripheral Nervous System. Explain which consists of is divided into that make up which is divided into Section 35-3 The Nervous System.
The Senses (3) Anatomy and Physiology. The Senses  The body contains millions of neurons that react directly to stimuli from the environment, including.
Nervous System Chapter 20 Section 1. You will learn  To describe how the body’s senses help monitor the environment.  To explain how the sensory organs.
End Show Slide 1 of 49 Copyright Pearson Prentice Hall Biology.
Animal Senses. Photoreceptors Vary from simple light/dark sensors in simple animals (e.g. worms) to complex organs in advanced animals. Wavelengths detected.
The Nervous System Science Ms. Curd’s Class. The Five Senses 1. Sight 2. Hearing 3. Touch 4. Smell 5. Taste.
The Senses Chapter 35.4.
Sensory Receptors. D.S.Q. 1. What is getting ready to happen to the foot in the picture? 2. What will most likely happen as soon as the feather rubs.
THE SENSES PGS Chapter 35 Section 4. Objectives _______________ the five types of sensory receptors ______________ the five sense organs Name.
Lesson Overview 31.4 The Senses.
Sensory Receptors [Note: This is the text version of this lecture file. To make the lecture notes downloadable over a slow connection (e.g. modem) the.
CHAPTER 21 THE NERVOUS SYSTEM and SENSES Homeostasis-maintaining a constant internal balance; responding to stimuli Stimuli- an external or internal.
The 5 sense organs in our body are EYES, TONGUE, NOSE, EARS and SKIN
Chapter 11 Preview Section 1 The Nervous SystemThe Nervous System Section 2 Responding to the EnvironmentResponding to the Environment Section 3 The Endocrine.
Chapter 28 Arthropods Centipedes and Millipedes. 14. Subphylum Uniramia –Centipedes, millipedes and insects. A. Class Chilopoda 1. Centipedes a). One.
What Makes an Insect an Insect? (p ). size range from 1/100 inch to 13+ inches long 1.
It's all under control. Getting the message H umans (and all other organisms)need to respond to changes that occur both inside and outside their bodies.
Coordination and Response in Plants and Animals Receptors, Effectors and the Central Nervous System.
Sensory and Motor Mechanisms
Lesson Overview 28.1 Response.
Sensory Pathways and Sensations Humans can distinguish among many different types of internal and external stimuli because we have highly developed sensory.
THE NERVOUS SYSTEM. Senses  In order for humans to survive, their bodies must constantly monitor the environment  Sense organs interact with the nervous.
1. What are your 5 senses? 2. Give an example of a stimulus for each one of your senses. (stimulus = something you can sense) Example: Hearing  Listening.
Skin Receptors. Body Receptors  Sensory Receptors- nerves and cells that are in your eyes and ears.  External Receptors – outside the body, pain, heat,
AP Biology Nervous Systems Part 4. Important concepts from previous units: There are various different types of energy in nature. A ligand causes a confirmation.
The Nervous System  The nervous system controls our bodies and helps us respond to external stimuli.  The nervous system works by sending electrical.
UNIT 3 The interaction function Natural Science 2. Secondary Education THE INTERACTION FUNCTION PROCESSES.
The Peripheral Nervous System Subtitle. The Spinal Cord ▪ Function: to relay information to and from the brain ▪ Description: white cable around 43cm.
Sensors: Detect Changes in environmental conditions Use Receptor Cells
How do animals detect environmental stimuli?
THE NERVOUS SYSTEM.
The Senses Chapter 29.
Unit 5: Interaction function Page 72
Unit 5: Interaction function Page 72
RECEPTORS AND EFFECTORS
Bellwork: How does an animal respond to it’s environment
Peripheral Nervous System
Structure and Function
The Senses.
The Nervous System N ai r a Naira Martins 4 B.
Notes – Nervous System 1.
The human interaction function
Presentation transcript:

UNIT 3 The interaction function Natural Science 2. Secondary Education THE INTERACTION FUNCTION PROCESSES

UNIT 3 The interaction function processes 1: Light makes a bird visible to the cat. The bird also emits sound vibrations (chirping). 2: The visual and acoustic signals reach the cat’s sensory organs. 3: The sensory organs send the information they receive to the central nervous system. First, the receptor organs of living things capture information and send signals to the processing centres. Natural Science 2. Secondary Education

The central nervous system processes the information received and produces a suitable response (there is a bird there and I’m going to try to catch it). Then, the coordination centres process the signals from the receptors and prepare a response. UNIT 3 The interaction function processes Natural Science 2. Secondary Education

The cat’s muscles, part of its locomotor system, receive the order to respond and carry out movements in order to try to catch the prey. Finally, the effectors receive the signals from the coordination centres and carry out the response. UNIT 3 The interaction function processes Natural Science 2. Secondary Education

UNIT 3 Examples of sense organs SENSE ORGANS Click on each box to find out more CHEMORECEPTOR ORGANS PHOTORECEPTOR ORGANS MECHANORECEPTOR ORGANS Natural Science 2. Secondary Education

The photoreceptor organs of animals are the eyes. They capture light and permit sight. They are normally on the head. Photoreceptor organs UNIT 3 Examples of sense organs Natural Science 2. Secondary Education

Depending on their complexity, eyes can be classified into different categories: Simple eyes. Many invertebrates have these. They only detect the presence or absence of light. Compound eyes. Arthropods have these. They are made up of thousands of individual photoreceptor units called ommatidia. Together, these units provide the animals with a mosaic image. Types of eyes (I) The compound eye in an insect. Ommatidium Compound eye Simple eye UNIT 3 Examples of sense organs Natural Science 2. Secondary Education

Camera-type eyes. Some invertebrates, such as cephalopods, have these eyes, and almost all vertebrates have them. Their structure is similar to that of a camera and they provide clear images of the animal’s surroundings. Types of eyes (II) The camera-type eye of a bird UNIT 3 Examples of sense organs Natural Science 2. Secondary Education

There are various types of mechanoreceptor organs which differ depending on the stimulus they capture: Hearing organs (ears): These are usually holes that capture vibrations in the air or water. Balance organs: Cells that are sensitive to gravity and indicate the position of the animal’s body. Mechanoreceptor organs (I) A reptile’s ear Ear opening Structures that detect vibrations UNIT 3 Examples of sense organs Natural Science 2. Secondary Education

Lateral line: Found in fish. This line detects vibrations and movements in the water. Skin: The skin has receptor cells that respond to pressure. It provides the sense of touch. Mechanoreceptor organs (II) The lateral line of a fish Receptor cell Channel Skin UNIT 3 Examples of sense organs Go back to the Start menu Natural Science 2. Secondary Education

These capture substances which are in the air, water and foods. They provide two closely related senses: smell and taste. Chemoreceptor organs UNIT 3 Examples of sense organs Natural Science 2. Secondary Education

Usually, these receptors are located near the mouth. For example: Arthropods: on the antennae. Vertebrates: in the nostrils or on the tongue. Chemoreceptor organs Antennae: These contain many receptors that respond to substances in the air, working as olfactory organs. Tongue: The tongue captures substances from its surroundings and brings them to an olfactory receptor organ UNIT 3 Examples of sense organs Go back to the Start menu Natural Science 2. Secondary Education

ANIMAL RESPONSES 1)Movements 2)Secretions 3) Other responses

UNIT 3 The movements of animals WHEN MUSCLES CONTRACT THEY PRODUCE MOVEMENTS: INVOLUNTARY VOLUNTARY (LOCOMOTOR SYSTEM) Click on each box to find out more INVERTEBRATES WITH NO EXOSKELETONS ARTHROPODS ECHINODERMSVERTEBRATES Natural Science 2. Secondary Education

These occur in the internal organs. An example is the beating of a heart. Involuntary movements The movement of the heart pumps blood around the organism. Go back to the Start menu UNIT 3 Natural Science 2. Secondary Education The movements of animals

These are carried out by the locomotor system. They allow an animal to move from one place to another. Voluntary movements UNIT 3 Go back to the Start menu Natural Science 2. Secondary Education The movements of animals

The muscles form part of the walls of the body. By contracting them, the animal’s shape changes and it can move. The locomotor system in invertebrates with no exoskeleton 1: When squid’s muscles relax, water enters its body. 2: When muscles contract, shooting out water, the animal is propelled backwards. UNIT 3 Go back to the Start menu Natural Science 2. Secondary Education The movements of animals

The locomotor system in arthropods 2: When these muscles contract, they pull on parts of the exoskeleton (in this case, the wings), enabling the animal to move from one place to another. Their muscles are connected to the internal side of the articulated exoskeleton. UNIT 3 Go back to the Start menu 1: Arthropods’ muscles are connected to the exoskeleton. Natural Science 2. Secondary Education The movements of animals

The locomotor system in echinoderms 1: The pressure on the ampullae pushes the tube feet out of the animal’s body. 2: The starfish moves. Tube foot Their muscles are associated with a system of tubes and ampullae (sacs) full of water knows as the ambulacral system. UNIT 3 Go back to the Start menu Natural Science 2. Secondary Education The movements of animals

The locomotor system in vertebrates 1: The muscles contract and pull the bones. 2: The limbs move, and so does the animal. Their muscles are anchored to parts of the internal skeleton. UNIT 3 Go back to the Start menu Natural Science 2. Secondary Education The movements of animals

Animals carry out other types of responses to stimuli besides movements and secretions. For example: Electricity production Light production production Light production production Colour change Click on the buttons to find out more

Many animals can change the colour of their skin. They do it in order to camouflage themselves with their surroundings, to scare off predators or to communicate with other members of their species (during mating, for example). Colour change Back Chameleons change colour to blend in with their surroundings. Chameleon Cephalopods can change colour very quickly. Octopus

Bioluminescence is the production of light by a living organism, and is more common among marine animals. One interesting example among terrestrial animals is that of fireflies. Theses beetles produce a greenish light at the end of their abdomen in order to attract mates. Light production Firefly Back

Some aquatic organisms, like electric eels, or a type of ray called an electric or torpedo ray, can generate electricity inside their bodies and discharge it in the water to stun their prey or predators. Electricity production Electric ray Back