Chapter 2 Body Coordination

Name:……………………………………………… Class: …………Chapter 2Exercise 1Learning Area: Body CoordinationLearning Objective: Understanding body coordination

1. The ability of various parts of the body to carry out a task is called ……………………….

2. Body coordination is controlled and regulated by :

(a) ………………………

(b) ………………………

3. The importance of body coordination :

(a) To keep the conditions in our body …………………. at all times.

(b) Enable our body to ……………………. changes in our surroundings.

(c) Ensure all our body systems are able to ………………….. harmoniously.

4. Complete the graphic organizer to show the components of the human nervous system.

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Nervous System

brain

The control centre of the nervous system

Nerves from the brain

Nerves from the spinal cord

Link ………… and ……….with the central nervous system.

peripheral nervous system

Score: …/12 x 100 = ……%

Name: ……………………………………………… Class: …… Chapter 2Exercise 2Learning Area: Body CoordinationLearning Objective: Understanding the human nervous system.

1. The diagram below shows the structure of a typical neurone.

(a) Label the parts of the neurone.

(b) On the diagram above, show the flow of an impulse.

(c) The basic structure of the nervous system is called a ……………………

2. State the function of the parts of the neurone in the table below.

Part of neurone Function

Nucleus

Dendrite

Axon

Myelin Sheath

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Score: ……/20 x 100 = ……%

Flow of impulse

3. Identify the different types of neurone in the diagram below and state its function.

Neurone Function

………………..neurone

Transmit impulse from …………………….

to …………………………

………….neurone


to …………………………

………………neurone


to …………………………

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Name: …………………………………………… Class: ……. Chapter 2Exercise 3Learning Area: Body CoordinationLearning Objective: Analysing nervous coordination.

1. Complete the flow chart below to show the pathway of impulse in nervous coordination using the words given.

sensory effector stimulus receptor motor central nervous system

2. Fill in the blanks with the correct words.

(a) Receptor: (i) Are …………………………cells.

(ii) Can be found in ………………

(iii) The function is to ……………..

(b) Effector: (i) Example: ……………… and ……………

(ii) The function is to ………………………..

(c) The function of the ………………………………………. is to process the information.

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Score: ……/33 x 100 = …… %

....................... .......................

...........................................

Response .......................



3. The diagram below shows a reflex arc in a reflex action

(a) What is a reflex action?

…………………………………………………………………………………………………..

(b) Give two examples of a reflex action.

(i) ………………………………….

(ii) ………………………………….

(c) State one importance of a reflex action.

…………………………………………………………………………………………………..

(d) Study the reflex arc above. Identify the following components of the reflex arc.

Stimulus

Receptor Pain receptors in the finger.

Part of the central nervous system involved

Effector Muscles in the arm.

Response

(e) Explain how the reflex action takes place by filling in the blanks with the correct words.

(i) …………………stimulus is detected by ………………… in the fingers.

(ii) A nerve impulse is produced and is carried by a …………….. neurone to the …………….

(iii) In the spinal cord, the ……………. neurone transmits the impulse to the …………………

neurone.

(iv) The ……………… neurone will transmit the impulse to the ……………………. in the

arm.

(v) The …………………… in the arm will …………………………

(vi) As a result, the hand will be ……………………………………..

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…………………………………………

…………………………………………

……………………………………….

Name: ……………………………………………… Class: ……Chapter 2Exercise 4Learning Area: Body CoordinationLearning Objective: Understanding the role of proprioceptors in maintaining balance and coordination. The diagram below shows a student walking on a narrow log.Fill in the blanks with correct word.

Name: ………………………………………………… Class: ……2 - 6

Score: ……/6 x 100 = ……%

Cells involve:………………….cells

Importance:

Coordinate movement

Maintain …………….

Sensitive to:

Pressure

……………………….

……………………….

Found in:

……………………....

Tendon

………………………

Score: ……/27 x 100 = ….. %

Chapter 2Exercise 5Learning Area: Body CoordinationLearning Objective: Understanding the human brain and its complexity.

1. Label the parts of the human brain.

2. State the function of each part of the human brain.

Part of brain Function

Cerebrum Control …………………….. action.

Cerebellum(i) Control ……………………………

(ii) Maintain …………………………..

Medulla oblongata

Control …………………….. action.

3. (a) Classify the following actions into voluntary actions and involuntary actions.

reading, heartbeat, raising your hand, blinking of the eye, running,

digestion, climbing a tree, blood circulation, dilation of pupil, skipping.

Voluntary actions Involuntary actions

(b) Complete the table below to differentiate between voluntary action and involuntary action.

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Voluntary action Aspect Involuntary action

Ability to control the action by the conscious mind

Part of brain that control the action

4. State three factors that can cause injury to the human brain

(a) ………………………………………..

(b) ……………………………………….

(c) ……………………………………….

5. Write the effect of injuries to specific parts of the brain:

Part of brain injured Effect

Cerebrum

Cerebellum

Medulla oblongata

Name: ……………………………………………… Class: ……

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Score: ……/26 x 100 = ….. %

Chapter 2Exercise 6Learning Area: Body CoordinationLearning Objective: Understanding hormonal coordination in the body.

1. Fill in the blanks with correct word(s).

(a) Hormonal coordination in the body is carried out by the …..…………… system by secreting

…………………..

(b) The characteristics of endocrine glands:

(i) …………………………………………………

(ii) secrete hormones into ………………………...

(iii) hormones are sent to ……………………………...

2. The diagram below shows the endocrine glands of a woman. Identify the endocrine glands.

3. State the location of the hormones secreted by the endocrine glands.

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A : __________________________________

B : __________________________________

C : __________________________________

D : __________________________________

E : ___________________________________

B

A

CD

E

Endocrine gland Location Function of hormone

PituitaryControls growth and other endocrine glands.

Thyroid Controls rate of metabolism.

Pancreas Controls blood sugar level.

Adrenal Increase heartbeat and breathing rate.

TestisControls the development of secondary sexual characteristics in male.

Ovary Controls the development of secondary sexual characteristics in female.

4. State the effects of hormonal imbalance to health.

Endocrine gland

Effect of

under secretion over secretion

Pituitary

Thyroid

AdrenalLow capacity to overcome stress.

Pancreas

Testis

Ovary Highly feminine.

Name: …………………………………………….. Class: ……

2 - 10Score: ……/25 x 100 = ….. %

Chapter 2Exercise 7Learning Area: Body CoordinationLearning Objective: Analysing coordination between the nervous system and the endocrine system.

1. Compare and contrast the nervous coordinator and hormonal coordination.

Aspect

Means of control

Nature of message

Speed of transmission

Destination of message

Area affected

Duration of effect

2. Complete the flow chart below to show the coordination between the nervous system and the

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Nervous coordination Hormonal coordination

Similarities

(i) Can sense …………………. in the

environment.(ii) ………………. and …………….. activities in the body

Differences

endocrine system when a boy is chased by an elephant.

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Stimulus

............. detect stimulus

Send nervous impulse to the

………………

Brain ………………. message

and sends new impulses.

……………..glands Body muscles

send impulse

Effect:

Pupils ………………………...

Breathing rate ………………..

Heartbeat …………………….

Blood pressure ……………….

Glucose level ………………...

Energy production …………...

Response

Name: ………………………………………………. Class: ……Chapter 2Exercise 8Learning Area: Body CoordinationLearning Objective: Evaluating the effects of drug abuse on body coordination and health.

1. The meaning of drug abuse: - ……………………. of drug.

- without ………………… prescription.

- for ………………………… purpose.

2. Effect of drug abuse on body coordination.

Type of drug Example Effect on body coordination

Stimulants

(i) …………………

(ii) …………………

Will increase :

……………………………

……………………………

……………………………

……………………………

Depressants

(i) ………………….

(ii) ………………….

Slow down:

…………………………

…………………………

Hallucinogens (i) ………………….

(ii) …………………

Can cause:

………………………..

Impair ……………… coordination.

……………… behaviour.

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Score: ……/18 x 100 = ….. %

Name: ………………………………………………… Class: ……..Chapter 2Exercise 9Learning Area: Body CoordinationLearning Objective: Analysing the effects of excessive consumption of alcohol on body coordination and health.

1. Alcoholic drinks contain …………………...

2. List 3 examples of alcoholic drink.

(a) ……………………………….

(b) ……………………………….

(c) ……………………………….

3. The diagram below shows the effect of alcohol on body coordination. Complete the diagram with correct answer.

4. State the effect of excessive consumption of alcohol on health.

(a) …………………………of the liver.

(b) Damage the …………………… and ………………….

(c) ………………….. in baby born to alcoholic mother.

(d) Cancer of the …………………. and …………………...

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Effect of alcohol on body coordination

Slows down transmission

of ………………………

Impairs functioning of the

………………………

………………… reaction

time.

Depressant Impairs judgement

Score: ……/13 x 100 = ….. %