SCIENCE GRADE 9 FIRST QUARTER

Which of the following is responsible in the distribution of nutrients, dissolved gases and materials into the different parts of the body?

• Digestive System

• Respiratory System

• Circulatory System

• Immune System

Which of the following statement is TRUE about arteries?

• Some of the arteries are thin-walled that can withstand low pressure of the blood.

• All arteries carry blood away from the heart to the different parts of the body.

• The deoxygenated gas is brought by all the arteries which will be eliminated through respiration.

• The valves are present in these structures that are inferior towards the heart.

The coordination between the heart and lungs is observed in maintaining the oxygen blood levels in human body. This shows what type of circulation?

• Coronary Circulation

• Systemic Circulation

• Pulmonary Circulation

• Arterior Circulation

Which of the following body organs do not belong in the group based on their coordinated function?

• Trachea

• Alveoli

• Bronchioles

• Capillaries

In respiratory system, gas exchange occurs in alveoli, sac-like structures. An analogous function is also found in which part of circulatory system?

• Vena Cava

• Veins

• Capillaries

• Arteries

Anne already finished her exercise. Which of the following mechanisms does not satisfy with the meaning of exhalation?

• Ribs move out

• Air moves into the lungs

• Chest space becomes larger

• Diaphragm moves up

It is the thickest of the heart's chambers and its responsible for pumping oxygenated blood to the tissues all over the body.

• Right Ventricle

• Left Ventricle

• Right Atrium

• Left Atrium

What is the main important role of bicuspid and triscuspid valve as one of the main parts of the heart?

• They serve as the doors and prevent the back flow of the flood from the start.

• They pump blood towards the lungs for the exchange of the gases.

• They maintain the internal temperature of the heart in different pressures.

• They filter the entrance and exit of the different substances in the heart.

The main artery of the body supplyong oxygenated blood to the circulatory system.

• Arterioles

• Aorta

• Vena Cava

• Venules

What will happen if cilia do not function properly?

• The filtration of the entrance of dirt and germs from the body will not be conducted.

• The dissolution of non-essential materials will not be done.

• The entrance and exit of air in and out of the respiratory system will not be highly regulated.

• The exchnage of gases inside the alveoli will be improperly functioned.