This document provides an overview of the nervous system, including its divisions, receptors, effectors, and career opportunities. It begins with objectives and introduces the nervous and endocrine systems working together to sense the environment and coordinate responses. It describes the central and peripheral nervous systems and their components. Receptors are defined as detecting stimuli, while effectors produce responses through muscle movement or gland secretions. Examples of careers involving the nervous system include neurologists, neurosurgeons, and chiropractors.

1. Module 2Module 2  Unit 6Unit 6  Lesson 1Lesson 1
Integrated ScienceIntegrated Science

2. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
INTRODUCTION
2
The information and activities in this slide
presentation relate to:
Module 2: Unit 6 - Sense Organs and
Coordination:
Lesson 1 – The Nervous System:
Receptors and Effectors
You can access various subtopics in the
Menu on the LEFT of the slide.

3. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
OBJECTIVES
3
On completing this slide presentation, you
should be able to:
show understanding of the inter-related
roles of the nervous system and endocrine
system in sensing the environment and
coordinating our responses.
research information and share ideas.
describe the human nervous system.
define the terms receptors and effectors and
differentiate between their main roles.
identify the types of neurones and their
functions.

4. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
1. Systems forSensing & Coordinating
4
 Our nervous systemand endocrine system
work together. Their role is coordination of
the specific responses needed to ensure
homeostasis.
 Co-ordination involves the interpretation of
stimuli and the adjustment of an animal’s
response to changes in the environment,
done by linking of various complex
processes in the body so as to ensure
homeostasis which enables us to survive.
 The diagrams on the next slide show both
systems.

5. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
1. Systems forSensing & Coordinating
Activity 1 . 1 - Syste m s fo r Se nsing and Co o rdinating
5
1. Click open this website and examine the two
illustrations to compare the main parts of the
endocrine and nervous systems >
http://www.emc.maricopa.edu/faculty/farabee/biobk/nerv
2. Go through the video from this next website >
http://www.youtube.com/watch?v=R218fFZhq4c&feature
3. Make a table to list and compare the two systems.
Feedback :
 Click and read the table at >
http://tracker.moodle.org/secure/attachmentzip/unzip/22
NEXT QUESTIONNEXT QUESTIONNEXT QUESTIONNEXT QUESTION
CHECKCHECK

6. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
1. Systems forSensing and Coordinating
6
Look at the parts that comprise each system.

7. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
1. Systems forSensing & Coordinating
7
These two systems continuously send and receive
instructions that enable us to detect changes in our
internal and external environment, then make an
appropriate response.
The response could be muscle movement or
secretions from endocrine and other types of glands.
The nervous system generally coordinates rapid
responses to external stimuli perceived by sense
organs.
The endocrine system coordinates slower, longer-
lasting responses to internal stimuli.
Together, they monitor internal or external changes.

8. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
2. Divisions of the Nervous System
Thre e functio ns o f the Ne rvo us Syste m
8

9. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
2. Divisions of the Nervous System
9
The nervous system is able to carry out its functions
because it has many inter-related parts.
The diagram shows the two main divisions of the
nervous system; they are listed in the flow chart.
.

10. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
2. Divisions of the Nervous System
Activity 2. 1 – The co m po ne nts o f the Ne rvo us Syste m
10
1. Watch the video at :
http://www.onlinemathlearning.com/central-nervous
2. Examine the diagram at this website:
http://en.wikipedia.org/wiki/File:Nervous_system_d
3. Answer questions 1 and 2 on the next slide.

11. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
2. Divisions of the Nervous System
Activity 2. 1 – The co m po ne nts o f the Ne rvo us Syste m
11
Question 1. What are the two major branches of
the human nervous system?
Question 2. What are the components of each?
CHECK
The Nervous System consists of the:
CCentral NNervous SSystem (CNS) and the
PPeripheral NNervous SSystem (PNS).
The components of the CNS are Brain , spinal cord;
The components of the PNS are all *neurones, cranial
nerves, spinal nerves and sense organs.
*NOTE: Spellingis either‘neurone’ or‘neuron’. Useonlyone
form!

12. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
2. Divisions of the Nervous System
Feedbackto Activity 2. 1 – The co m po ne nts o f the Ne rvo us Syste m
12
Question 3
a)What are the two major branches of the human nervous system?
b)What are the components of each?
The Nervous System consists of the:
CCentral NNervous SSystem (CNS) and the
PPeripheral NNervous SSystem (PNS).
The components of the CNS are Brain , spinal cord;
The components of the PNS are all *neurones, cranial nerves
, spinal nerves and sense organs.
*NOTE: Spellingis either‘neurone’or‘neuron’. Useonlyoneform!

13. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
What are Re ce pto rs?
13
 Receptors enable us to detect stimuli or
changes in our internal and external
environment, so that we can produce a
response .
 Listen to this video starting from 2.15 –
3.39 from -
http://www.youtube.com/watch?v=-MK2ZleBDEQ
 Carefully examine/read the next slide which
shows sense organs and the stimuli that
the receptors in each sense organ are able
to detect.

14. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
Activity 3. 1 - What are Re ce pto rs?
14
1. Identify the types of receptors.
2. State what a receptor does. Write it in your notebook.
Hearing
Seeing
Smelling
Tasting
Feeling
Balancing
CHECK

15. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
Feedback to Activity 3. 1 - What are Re ce pto rs?
15
Questions
1. Identify the types of receptors.
2. State what a receptor does.
In youranswer, you should include the following points:
 The types of receptors shown in slide 12 are those which
detect the stimuli as follows: Skin = touch/pressure/pain and
temperature; Eye = light; Ear = sound and balance (space
orientation); Tongue and Nose - chemical.
 A receptor contains special sensory cells and/or sensory
nerve fibres which will detect and change stimuli into an
electrochemical messages called a nerve impulses.
Now watch this video clip from -
http://www.youtube.com/watch?v=RUHGI8IixU0&feature=relmfu

16. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
Activity 3. 2 - What are Effe cto rs?
16
Discuss the diagrams on this and the next
slide with your teacher, then list examples of
the effectors and the response/s which each
produces.
Three types of muscles that are effectors.

17. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
Activity 3. 2 - Two type s o f g lands that are e ffe cto rs
17
17

18. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
3. Receptors and Effectors
Feedback to Activity 3. 2 - What are Effe cto rs?
18
The table should include the following information:
Effectors are usually a muscle or a gland which produces
relevant changes in the body called a response;
 Muscles cause movement.
a.Skeletal: Response = movement of skeleton
b.Cardiac: Response = beating/pumping action of the
heart, which is really contraction and relaxation of the
cardiac muscle.
c.Smooth: response = cause churning movements of the
stomach
Glands will produce and secrete chemical substances
a. Endocrine glands: Response = hormones
b. Exocrine glands: Response = e.g. sweat
Activity
3. 2
Activity
3. 2

19. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
CareerFocus - Neurologist
19
Do on-line internet or
book research to find out
how she has used her
knowledge and training
to assist people
suffering with
neurological problems.
Research Topic – Who is Jamaican Dr. MicheleLee?
Visit the link for information about this “certified
neurologist and pain/headache specialist, the only
female of herkind in Jamaica”.
http://jamaica-gleaner.com/gleaner/20070812/out/out1.html
http://jamaica-gleaner.com/gleaner/20070812/out/out1.html

20. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
CareerFocus
 “An anesthesiologist is a medical doctor (M.D.) who is
trained in administering anesthesia, which works on the
nervous system to prevent the sensation of pain.
 A neurologist is a medical doctor (M.D.) who has
completed specialized training in internal medicine and
neurology.
 A neurosurgeon is a medical doctor (M.D.) who has
completed specialized training in surgery of the nervous
system.
 A neuropathologist is a medical doctor (M.D.) with
subspecialty training in the microscopic examination of
nervous system and muscle tissue.
 A chiropractor is a health care professional trained to
provide medical care for disorders of the musculoskeletal
system and the nervous system.”
Source >> http://wiki.medpedia.com/Nervous_system
20

21. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
SUMMARY
21
Click and watch the tutorial at:
http://www.youtube.com/watch?
v=65fNIUL4tdE&feature=related

22. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
CREDITS
22
 Slide 1 - http://encyclopedia.lubopitko-
bg.com/Nervous_System.html
 Slide 6:
http://www.emc.maricopa.edu/faculty/farabee/bi
obk/nervendo.gif
 Slide 8 - Photo taken from PowerPoint
presentation titled “Nervous Tissue” - Slide 2: at
http://scidiv.bellevuecollege.edu/nj/Bio241Lectu
res.htm
 Slide 14 - http://what-buddha-
said.net/drops/II/Hands_and_Feet.htm
 Slide 17 - http://jamaica-
gleaner.com/gleaner/20070812/out/out1.html

23. OBJECTIVESOBJECTIVES
Divisions of The
Nervous System
Divisions of The
Nervous System
Receptors/ EffectorsReceptors/ Effectors
Career FocusCareer Focus
Systems for Sensing
and Coordinating
Systems for Sensing
and Coordinating
SUMMARYSUMMARY
INTRODUCTIONINTRODUCTION
End of Presentation
23
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