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 HW AND MODEL ANSWERS CHAPTER 5 FINAL REVESION GRADE 4

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T.Nermeen Bahaa




Posts : 32
Join date : 2010-01-29

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PostSubject: HW AND MODEL ANSWERS CHAPTER 5 FINAL REVESION GRADE 4   HW AND MODEL ANSWERS CHAPTER 5 FINAL REVESION GRADE 4 I_icon_minitimeWed Feb 03, 2010 8:19 pm

Grade 4
Chapter 5
(from page 13 to 15)
HW is page 16

Model answers
Page 13
Q.1.COMPLETE:
1-oxygen ,nutrients
2-pharynx
3-lungs
4-diaphragm
5-carbon dioxide
6-heart,blood and blood vessels
7-oxygen,waste
8-blood,carbon dioxide
9-blood,oxygen
10-chambers,an atrium and a ventricle
11-lungs
12-rest of the body
13-hinge joint and ball and socket joint
14-skeleton or bones
15-build,strong

Q.2.WHAT WOULD HAPPEN IF:
1-The blood coming into the heart will be mixed with that leaving the heart.
2-It will cause an infectious disease
3-It will be killed by saliva, the acids in the stomach or by bacteria in the large intestine
4-It will be filtered by the hair in my nose or stick to the mucus in the walls of the respiratory system then the body expel it outside.
5-It will be digested into simple nutrients to be used by body cells.
6- cancelled

Q.3.GIVE THE SCIENTIFIC TERM:
1-cartilage
2-cardiac muscle
3-mouth
4-sense organs

Q.3.TRUE OR FALSE ;
1-f,circulatory system not skeletal system
2-t
3-t
4-f, not all the muscles
5-f, oxygen not carbon dioxide
6-t
7-t
8-f, carbon dioxide not oxygen or ogygen poor blood
9-t
10-f, small intestine not stomach
11-f, mouth not stomach
12-f, cause not fight
13-t
14-t
15-f, chemicals not tiny organisms

Q.5.WHAT IS THE FUNCTION OF :
1-Allow circular movement .

2-Pumps oxugen -poor blood to the lungs.

3-Stomach:1.Mashes food .
2.Mixes food with its juices till it becomes a thick liquid.
3.Pushes food into small intestine .

4- Trap and wash away microorganisms
.
5-Break down food into nutrients to be used by body cells.

6-It is the basic working unit of the nervous system that carries information in the form of electrical signals through all the body .


Q.6.ANSWER THE FOLLOWING QUESTIONS:
1-Blood vessels have smooth muscles.
-Toes have skeletal muscles.

2-Antibodies.


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STUDY HARD
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