Continue, chapter 5
From page 16 to 19
HW of chapter 6 is page 22))
Model answers ch 5
1-muscles and nerve
8-blood vessels ,intestine.
10-seven and 2.5 centimeters
1-To use the nutrients in the food you eat.
2-Beacause there is a small wall of muscles separating the two pumps of the heart i.e. separating the two atria from the two ventricles. OR due to the existence of valves between atria and ventricles that allow movement of blood in one direction only from atria to ventricles .
3-To protect them .
4-Because in the first time of infection your body immune system has already formed antibodies against this pathogen so in the second time these antibodies will prevent the pathogen from causing the disease.
Q.10.MENTION THE ORGANS OF EACH SYSTEM:
Blood ,heart and blood vessels.
2-Respiratory system :
Nose ,mouth ,trachea , bronchial tube ,lungs ,diaphragm and air sacs
3-Central nervous system:
Brain and spinal cord
4-Digestive system :
Mouth ,esophagus ,stomach ,small intestine and large intestine.
Q.13.COMPLETE THE LABEL
1-by order from top to down:
2-from top to down:
Q.11.CHOOSE THE CORRECT ANSWER FROM THE LIST :
1-Your body would not be able to walk ,throw smile ,or sing without your muscular system.
4-nervous system .
2-three layers of connective tissue
3-blinking and pulling your hand away from hot surface
5-skull,layers of connective tissue and watery liquid
7-bacteria and viruses